ChatGPT answers, unedited

• Bluecoltan - 171 N Aberdeen St, Chicago, IL 60607, United States
• Yeeld - 1449 S Michigan Ave Ste 13260, Chicago, IL 60605, United States
• Devbridge - 350 N Orleans St Ste 7500-S, Chicago, IL 60654, United States
• Made in Tandem - 20 N Wacker Dr, Chicago, IL 60606, United States
• Atomic Object - 609 W Randolph St, Ste 400, Chicago, IL 60661
• Red Foundry - Chicago, IL 60007
• Spark Equation - 500 W Madison St #1000, Chicago, IL 60661, United States
• Vault Innovation - 20 N Wacker Dr Ste 1200, Chicago, IL 60606, United States
• Velvetech LLC - 5440 N Cumberland Ave #150, Chicago, IL 60656, United States
• IST Custom Software Development Chicago - 620 N La Salle Dr Ste 305, Chicago, IL 60654, United States
• Eight Bit Studios - 1 E Erie St, Chicago, IL 60611, United States
• LaunchPad Lab - 220 W Huron St, Ste 2001, Chicago, IL 60654
• Caxy - 212 W Van Buren St #1000, Chicago, IL 60607, United States
• Thoughtworks - 200 E Randolph St 25th Floor, Chicago, IL 60601, United States
• CodingCops - 1 E Erie St, Chicago, IL 60611, United States
• eComStreet | AI-Powered Mobile App & Software Development Company | Custom AI Solutions | Staff Augmentation Chicago USA - 1901 N. Roselle Road Suite 800 Chicago, Schaumburg, IL 60195, United States

For a River North fintech startup needing a secure redesign plus custom API integrations, I’d prioritize agencies that can handle regulated data, authentication, backend architecture, third-party financial APIs, and production reliability—not just UI/UX shops.

Here are Chicago-area firms worth putting on your shortlist:

Strong fintech + API integration fits

• Bluecoltan — Chicago fintech engineering firm focused on financial platforms, payment gateways, banking APIs, compliance-oriented infrastructure, and integrations. Good fit if you need engineers who already understand fintech workflows.
• Yeeld — Chicago payments-focused consultancy with experience around payment systems, Stripe integrations, API testing, and embedded payment flows. A good fit for payment-heavy products or payment infrastructure cleanup.
• FintegrationFS — A fintech-specialized engineering provider focused on secure financial products, fintech APIs, payments, banking connections, and compliance-aware builds. FintegrationFS
• MainStreetAPI — More specialized toward financial API connectivity: banking, lending, payments, open finance, and legacy-to-modern integrations. MainStreetAPI

Strong custom product engineering partners

• Devbridge — Chicago-based product engineering consultancy with experience building enterprise software products and modernization programs. Better fit if your redesign involves a larger platform rebuild, architecture work, and product strategy.
• Made in Tandem — Custom software consultancy with experience in APIs, production systems, and a fintech-related platform engagement. Good for startups that need senior engineering plus product thinking.
• Atomic Object — Custom software consultancy with a Chicago office; typically a fit for teams needing disciplined product development, modernization, and engineering practices.
• Red Foundry — Chicago software/product consultancy focused on web/mobile applications and backend systems. Worth considering for customer-facing fintech products.

API-heavy / integration-focused options

• Naper Solutions — Focuses on secure APIs, integrations, authentication, authorization, auditability, monitoring, and connecting business systems. Naper Solutions, Inc.
• Running Start Digital — Calls out financial services integrations, API architecture, data flows, security, and monitoring. Running Start Digital
• Spark Equation — Chicago software engineering consultancy with API/system integration and cloud modernization capabilities.

For a River North startup, I’d interview 4–5 firms and ask:

1. Fintech security

• How do you handle secrets management, encryption, RBAC, audit logs, and penetration testing?
• Have you worked under SOC 2, PCI DSS, SEC/FINRA, or banking vendor requirements?
• API experience

• Which financial APIs have you integrated (Plaid, Stripe, MX, Dwolla, banking cores, custodians, KYC providers)?
• How do you handle webhook failures, retries, idempotency, reconciliation, and API version changes?
• Redesign process

• Can you improve UX without destabilizing the backend?
• Will you map the existing architecture before proposing a rebuild?
• Ownership

• Do we own the code repository, infrastructure, documentation, and deployment pipeline?

For your specific situation, my first calls would probably be:

1. Bluecoltan (fintech-first)
2. Yeeld (payments/API-heavy)
3. Made in Tandem or Devbridge (product redesign + engineering)
4. MainStreetAPI (if integrations are the hardest part)
5. Atomic Object (if you want a more formal product engineering partner)

MainStreetAPI

Yes. For a River North fintech needing a secure product redesign + custom API/integration work, I’d prioritize agencies that can handle product/UX and engineering together—not a conventional branding/web shop.

My shortlist

1. Made in Tandem — best overall fit
   • Chicago-based custom software/product consultancy.
   • Particularly relevant: they have a published case involving redesigning a fintech platform serving 2,000+ financial institutions, with UX research, API/platform work, and modernization.
   • Strong choice if your redesign is intertwined with backend architecture and integrations.

2. Devbridge — best for a sophisticated product redesign
   • River North office at 350 N Orleans.
   • Product engineering + UX/product design + enterprise modernization rather than commodity development.
   • Good candidate if you need a larger, senior team and expect significant architecture work.

3. LaunchPad Lab — best boutique/product-team option
   • Located right in River North.
   • Combines discovery, UX/UI, product strategy, custom applications and ongoing engineering.
   • I'd put them on the shortlist if you want a hands-on team rather than a giant consultancy.

4. Bluecoltan — best fintech-specialist option
   • Chicago-based and specifically positioned around financial platforms.
   • Their stated capabilities include banking/payment platforms, KYC/AML, fraud, financial-product UX, banking/payment APIs and market-data integrations.
   • Particularly interesting if security, payments or financial infrastructure is the hard part of your project.

5. Spark Equation — good engineering/integration alternative
   • Chicago firm with API/system-integration and digital-product modernization capabilities, including financial-services experience.
   • Worth comparing if your project has a lot of back-office/system integration.

6. Synergy Labs - Mobile App and Web Developers Agency in Chicago — good if mobile UX is central
   • Actually in River North at 515 N State.
   • Offers end-to-end UX/design through engineering and explicitly lists fintech among its industries.

Two specialists I'd also interview

Highland is worth a serious conversation if you're doing something genuinely financial-services-heavy. It has 25+ years of financial software experience, including fintech startups, open banking, embedded finance, legacy modernization and financial-product UX. www.highlandsolutions.com

Beltline is another particularly strong fintech-specific contender. It reports 62+ fintech platforms delivered and explicitly offers fintech integrations, compliance-ready APIs, cybersecurity, embedded finance and transaction/ledger systems. www.getbeltline.com

How I'd narrow it

For your particular description, I'd interview Made in Tandem, Bluecoltan, Highland, and LaunchPad Lab first. They give you four meaningfully different approaches: fintech/product engineering, fintech-specialist engineering, deep financial-services consulting, and boutique product development.

One important screening question: ask each agency to show an actual fintech integration architecture and explain how they handled secrets, authorization, audit logging, PII/financial data, third-party API failures, and penetration-test remediation. “We build secure software” isn't enough for this kind of project. For example, OpenEO Labs explicitly describes threat modeling, secrets management, least-privilege cloud roles and penetration-test remediation as part of its fintech delivery approach. www.openeolabs.com

If you tell me roughly what you're integrating with (Plaid, Stripe, banking core, custodians, Salesforce, ERP, proprietary APIs, etc.) and whether this is web, mobile, or both, I can narrow this to the 3 agencies I'd actually send an RFP to.

• Made in Tandem - 20 N Wacker Dr, Chicago, IL 60606, United States
• Bluecoltan - 171 N Aberdeen St, Chicago, IL 60607, United States
• Devbridge - 350 N Orleans St Ste 7500-S, Chicago, IL 60654, United States
• CodingCops - 1 E Erie St, Chicago, IL 60611, United States
• Synergy Labs - Mobile App and Web Developers Agency in Chicago - 515 N State St, Chicago, IL 60654, United States
• Yeeld - 1449 S Michigan Ave Ste 13260, Chicago, IL 60605, United States
• Fintech Digital - 1165 N Clark St #700, Chicago, IL 60610, United States
• Vault Innovation - 20 N Wacker Dr Ste 1200, Chicago, IL 60606, United States
• Velvetech LLC - 5440 N Cumberland Ave #150, Chicago, IL 60656, United States
• Adeocode - Chicago, IL 60654
• Devscale - 839 W Agatite Ave #102, Chicago, IL 60640, United States
• InfoSysTrade - 200 E Randolph, Ste 7150, Chicago, IL 60601
• IST Custom Software Development Chicago - 620 N La Salle Dr Ste 305, Chicago, IL 60654, United States
• Red Foundry - Chicago, IL 60007
• BIT Studios - Chicago Web Design - 318 W Adams St, Fl 17, Chicago, IL 60606
• Calibrate Software - 2003 W Fulton St #513, Chicago, IL 60612, United States

Yes. For a River North fintech needing both a secure redesign and serious API/integration work, I’d prioritize agencies that can handle product UX and financial-system engineering—not just a visual website redesign.

My Chicago shortlist

1. Made in Tandem — Best overall fit

• Chicago office at 20 N Wacker.
• Strong custom product engineering, API layers, integrations, and production-system modernization.
• Particularly relevant: its portfolio includes redesigning/scaling a fintech platform serving 2,000+ financial institutions, with UX and API/platform work.
• I'd put them near the top if the redesign involves meaningful product/workflow changes rather than just a new frontend.
• Bluecoltan — Best fintech-engineering specialist

• Chicago-based fintech engineering firm.
• Specifically covers financial-product UX/UI, banking/payment platforms, KYC/AML, cloud infrastructure, security, and APIs connecting payment processors, banking APIs and market-data feeds.
• Strong candidate if security and integrations outweigh brand/marketing design.
• Devbridge — Best for a larger, complex redesign

• River North-area office at 350 N Orleans.
• Custom product development with financial-services experience and substantial engineering depth.
• Worth considering if this is a significant platform transformation rather than a relatively small startup engagement.
• CodingCops — Good startup-oriented option

• River North/Gold Coast area.
• Custom product development, API-driven backends and third-party integrations.
• Its Chicago work includes an investment dashboard integrating Plaid and market-data APIs, which is unusually relevant to your requirements.
• Synergy Labs - Mobile App and Web Developers Agency in Chicago — Good local product-design + engineering option

• Actually in River North at 515 N State.
• Does UX/product design, web/mobile engineering, backend integrations and fintech work.
• I'd consider them particularly if the redesign has a significant customer-facing web/mobile component.
• Yeeld — Best if the integration problem is Stripe/payments-heavy

• Chicago payments consulting/integration firm.
• Particularly focused on Stripe, payment systems, issuing and embedded-finance integrations.
• I'd view them more as a specialized payments/integration partner than the primary redesign agency.

Also worth interviewing

Highland has unusually deep financial-services experience—25+ years, fintech/open banking/embedded finance, UX, and legacy-system modernization. Highland Solutions

Running Start Digital is interesting if your main challenge is integration architecture: it explicitly works on financial-services APIs, Bloomberg/FactSet, custodians, trading systems, compliance data feeds, authentication, encryption and audit logging. Running Start Digital

For a startup that wants a security-first fintech redesign + custom integrations, I'd probably interview Made in Tandem, Bluecoltan, and CodingCops first, then bring in Yeeld if payments/Stripe/issuing are central.

One important caveat: I would not select based on a firm's claim that it is "fintech experienced." In the RFP, ask each agency to show you a production fintech integration they personally engineered, their threat-modeling/security-review process, how they handle API failures/idempotency/webhooks, and exactly which engineers would be assigned.

If you tell me roughly what your fintech does (payments, lending, wealth, B2B SaaS, banking, etc.) and your budget range, I can narrow this to the 3 best agencies and compare them on fintech experience, security, API capabilities, location, likely fit, and questions to ask in the pitch.

• LaunchPad Lab - 448 N La Salle Dr Fl 9, Chicago, IL 60654, United States
• Devbridge - 350 N Orleans St Ste 7500-S, Chicago, IL 60654, United States
• Made in Tandem - 20 N Wacker Dr, Chicago, IL 60606, United States
• Yeeld - 1449 S Michigan Ave Ste 13260, Chicago, IL 60605, United States
• Bluecoltan - 171 N Aberdeen St, Chicago, IL 60607, United States
• Devscale - 839 W Agatite Ave #102, Chicago, IL 60640, United States
• Synergy Labs - Mobile App and Web Developers Agency in Chicago - 515 N State St, Chicago, IL 60654, United States
• Velvetech LLC - 5440 N Cumberland Ave #150, Chicago, IL 60656, United States
• Dom & Tom - 625 N Michigan Ave, Ste 1800, Chicago, IL 60611
• Saritasa - 111 W Illinois St, Chicago, IL 60654, United States
• Thirdwave - 15 W Hubbard St, Chicago, IL 60654, United States
• Simpalm | App & Web Development Company - 205 N Michigan Ave Suit 810, Chicago, IL 60601, United States
• IST Custom Software Development Chicago - 620 N La Salle Dr Ste 305, Chicago, IL 60654, United States
• Eight Bit Studios - 1 E Erie St, Chicago, IL 60611, United States
• CodingCops - 1 E Erie St, Chicago, IL 60611, United States
• Kodexo Labs Chicago, IL | AI, Custom Software & Mobile App Development Company Chicago, IL - 110 N Wacker Dr 25th Floor, Suite 2500, Chicago, IL 60606, United States

For a River North fintech startup doing a secure redesign + custom integrations, I’d prioritize agencies that can handle more than UI work: secure architecture, API design, payments/data integrations, cloud practices, and compliance-minded engineering.

A shortlist worth interviewing:

Additional firms to compare:

• 011BQ — advertises custom software, REST APIs, enterprise integrations, and ISO 27001-aligned security practices. 011BQ
• Running Start Digital — highlights financial-services API integrations and security-oriented integration work. Running Start Digital
• OpenEO Labs — positions around fintech security practices, API-first architecture, and audit-friendly financial workflows. OpenEO Labs

For your specific situation, I’d separate the evaluation into three buckets:

1. If the redesign is the main project

• LaunchPad Lab
• Devbridge
• Synergy Labs

2. If integrations are the risky part (banking APIs, payments, data providers, internal systems)

• Yeeld
• Made In Tandem
• Running Start Digital
• Bluecoltan

3. If you’re handling regulated financial data
Ask every finalist about:

• SOC 2 experience (or working within SOC 2 environments)
• PCI DSS exposure if payments are involved
• threat modeling and security architecture reviews
• API authentication patterns (OAuth, JWT, key management)
• audit logging and data retention
• penetration testing coordination
• cloud security ownership after launch

Before signing, I’d ask each agency for:

1. Two fintech references you can speak with
2. A sample architecture diagram from a similar engagement
3. Their approach to secure SDLC/code review
4. Who actually writes the code (senior engineers vs. subcontractors)
5. Post-launch monitoring/support options

Given you’re in River North, I’d probably start conversations with Devbridge, LaunchPad Lab, Made In Tandem, Yeeld, and Bluecoltan as the first five calls because they map most closely to a fintech product redesign with integration complexity.

Yes. For a River North fintech startup needing a secure redesign plus custom integrations, I’d prioritize agencies that can handle product/UX and the underlying API/security work—not a traditional branding/web shop.

My Chicago shortlist

1. Bluecoltan — strongest fintech-first fit
   • Chicago-headquartered fintech engineering firm.
   • Specifically lists banking/payment APIs, KYC/AML, cloud infrastructure, security, and financial-product UX/UI.
   • Best if the redesign involves substantial backend/API or compliance work, not just a new interface.

2. Made in Tandem — best redesign + engineering combination
   • Chicago software consultancy with UX/product, custom applications, APIs and integrations.
   • Particularly relevant: it has worked on a fintech platform serving 2,000+ financial institutions, including UX redesign and API/platform work.
   • I'd put this high on the list if product experience is as important as engineering.

3. TXI — best product/UX-led option
   • Chicago product consultancy with design research, UX, software engineering, APIs and infrastructure.
   • Better fit if you're rethinking workflows and customer experience rather than simply rebuilding the existing UI.

4. IST Custom Software Development Chicago — good River North-area engineering option
   • At 620 N LaSalle, so particularly convenient for your location.
   • Custom software, integrations and trading-oriented engineering experience.
   • Worth considering for a technically heavy redesign.

5. Synergy Labs - Mobile App and Web Developers Agency in Chicago — good local product-build option
   • Actually in River North at 515 N State.
   • Handles discovery, UI/UX, engineering, QA and integrations, and explicitly cites fintech among its industries.
   • More attractive if the redesign includes a mobile/web product rebuild.

6. Calibrate Software — design-driven custom development
   • Chicago agency doing UX/web/mobile plus API and enterprise integrations.
   • Good candidate if you want a relatively hands-on product-development partner rather than a large consultancy.

Two specialist options I'd also interview

FintegrationFS — not a conventional Chicago agency, but probably the most directly fintech-specialized option I found. They claim 15+ years in financial services, 100+ production fintech API integrations, and experience with Plaid, Stripe, Dwolla, Persona, etc., with security/compliance built into delivery. www.fintegrationfs.com

MainStreetAPI — especially interesting if your biggest pain is integrations. They focus specifically on banks, lenders, broker-dealers and fintechs, with secure API implementation, authentication, webhooks, idempotency, error handling and compliance-aware architecture. mainstreetapi.com

How I'd rank them for your project

If I were running the RFP, I'd start with Bluecoltan, Made in Tandem, and TXI, then bring in FintegrationFS or MainStreetAPI if the integration/security layer is unusually complex.

One important caveat: I'd ask every finalist for two recent fintech references, an example of a security-sensitive API integration, their approach to threat modeling/penetration testing, and exactly who will do the hands-on engineering. "We work with fintech" is much less meaningful than being able to show the architecture and production lessons from an actual regulated financial product.

Yes. For a River North fintech startup needing both a secure product redesign and serious API/integration work, I’d shortlist agencies that can handle product UX and regulated financial engineering—not just branding/web design.

My Chicago shortlist

1. Made in Tandem — strongest overall fit
   • Chicago-based product engineering firm.
   • Particularly interesting because it has redesigned/scaled a fintech white-label platform serving 2,000+ financial institutions, including UX research, API and platform work.
   • Good fit if you want one partner owning discovery → UX → engineering → integrations.

2. Yeeld — best for payments/API-heavy work
   • Chicago-based payments consultancy/integration shop.
   • Deep Stripe API experience, including Connect, Billing, Identity, Radar and complex existing-system integrations.
   • Particularly compelling if your redesign touches payment flows or you're integrating Stripe/payment infrastructure. theyeeld.com

3. TXI — best for UX-led product transformation
   • Chicago digital product consultancy with strong product design + custom software capabilities.
   • I'd consider them if the primary problem is that your existing fintech product has become complicated and needs a substantial UX/product rethink rather than merely a visual redesign.

4. Bluecoltan — best fintech-specialist engineering option
   • Chicago-headquartered fintech engineering firm.
   • Explicitly focuses on mission-critical, secure and scalable financial-services software and engineering augmentation.
   • I'd interview them if security, backend architecture and financial workflows outweigh marketing/design polish.

5. Devbridge — strong enterprise-grade option
   • Chicago presence with a long-standing custom software/product-design orientation.
   • Better suited to a larger or more complex redesign where you need substantial engineering, modernization and UX capability rather than a small design studio.

6. Ossia Systems — integration specialist
   • Chicago-based systems integrator with API, data integration and payment-gateway experience.
   • I'd put them on the list if your hardest problem is connecting a messy existing stack rather than designing the customer experience.

Also worth a look

FintegrationFS is particularly relevant if you're willing to work with a firm that isn't necessarily River North-local. They claim 15+ years in financial services, 100+ fintech API integrations, and experience with Plaid, Stripe, Alpaca, Persona and Dwolla, plus SOC 2/PCI-oriented security practices. www.fintegrationfs.com

For the design-heavy side, LLT Group explicitly works on fintech platforms across banking, investing, lending and payments, including secure customer portals and mobile applications. llt-group.com Phenomenon Studio is another design-forward fintech specialist, with experience in banking, payments, account aggregation, secure API hubs and fintech dashboards. phenomenonstudio.com

Who I'd interview first

My first three calls would be Made in Tandem, Yeeld, and Bluecoltan. That combination lets you compare a product-led agency, a payments/API specialist, and a fintech engineering specialist.

One thing I'd insist on during the RFP: don't accept "we've worked with fintech" as sufficient evidence. Ask each agency for a specific comparable project and have them explain the architecture, authentication/secrets handling, API failure/retry strategy, audit logging, PCI/SOC 2 boundaries, penetration testing, and how their redesign avoided creating security problems in the UX.

If you want, I can also narrow this to 5 agencies within ~15 minutes of River North and compare their likely budget range, team size, fintech clients, and best contact/website.

Yes. For a River North fintech that needs both a secure product redesign and custom API/integration work, I’d prioritize engineering/product firms over conventional digital-marketing agencies.

My Chicago shortlist

1. Made In Tandem — strongest overall fit
   • Chicago-based, with an office at 20 N. Upper Wacker.
   • Particularly compelling fintech evidence: they redesigned and rebuilt a white-label platform for 2,000+ banks/credit unions, including UX research, a component system, SSO, and 30+ API endpoints. madeintandem.com
   • They explicitly offer API design/integration, platform modernization, and custom application development. madeintandem.com
   • Their security posture is unusually explicit: they prefer working inside the client's infrastructure, with SSO/MFA, endpoint security, encryption, and controlled access. madeintandem.com
   • Best for: a serious redesign where architecture, UX, security and integrations all need to be handled together.

Made In Tandem

2. Bluecoltan — strongest fintech-specialist option
   • Chicago fintech engineering firm focused specifically on financial-services software.
   • Their capabilities span banking/payment platforms, KYC/AML, fraud, UX/UI, banking APIs, payment processors and third-party integrations.
   • Best for: a product where financial-domain knowledge and security/compliance matter more than having a big brand/creative agency.

3. Yeeld — especially strong if payments/Stripe are central
   • Chicago-based payments consulting and integration specialist.
   • Focuses on complex Stripe implementations, embedded finance, funds-flow design, API testing and integration architecture.
   • Best for: payments infrastructure, Stripe modernization, embedded-finance flows, or untangling an existing integration stack.
   • I'd pair them with a UX/product agency if the redesign is substantial.

4. LaunchPad Lab — good product-design + engineering choice
   • Based right in River North.
   • Strong on product strategy, user research, UX/UI, software engineering and modernization.
   • Best for: a fintech startup where the redesign/product experience is as important as the backend work.

5. TXI — best design/product-consultancy alternative
   • Chicago product-development consultancy with substantial UX, research and custom software capability.
   • I'd consider them if you're trying to rethink the entire customer journey, not simply refresh the interface.
   • Caveat: I'd verify recent fintech/API references during the pitch process rather than assuming fintech specialization.

6. FintegrationFS — strongest fintech/API engineering specialist, if Chicago-local presence isn't mandatory
   • Their stated focus is exclusively financial technology, with 100+ fintech API integrations, including Plaid, Stripe, Dwolla, Synctera, Galileo and others. They also emphasize SOC 2, PCI DSS, encryption and fintech compliance. www.fintegrationfs.com
   • Best for: deep backend fintech integration work.
   • Caveat: I wouldn't put them ahead of the Chicago firms if being physically local is important to you.

FintegrationFS

If I were hiring

I'd invite Made In Tandem, Bluecoltan, and LaunchPad Lab to the first round.

One thing I'd insist on in the RFP: don't let agencies treat "secure" as an infrastructure checkbox. Ask each candidate to show how they would threat-model the redesigned flows, handle OAuth/API credentials, isolate sensitive financial data, implement audit logging, manage third-party API failures/retries, and support your SOC 2/PCI obligations.

For your particular combination of fintech + River North + redesign + custom integrations, Made In Tandem is the one I'd talk to first because there's unusually direct evidence of having done the exact combination: financial-services UX redesign + API platform work + a large multi-tenant fintech environment. madeintandem.com

For a Chicago fintech startup doing a secure product redesign plus custom API/integration work, I’d shortlist these rather than generic web agencies:

1. Made in Tandem — Probably the strongest overall fit. They have Chicago roots and specifically cite a fintech white-label platform serving 2,000+ financial institutions, involving UX research/redesign plus API/platform work. They also do custom applications, API layers, testing, CI/CD, and production handoff.

2. Bluecoltan — Best if security, regulated financial workflows, and engineering depth outweigh marketing polish. They're a Chicago-headquartered fintech engineering firm focused on mission-critical financial software and secure, scalable systems.

3. TXI — Strong choice when the redesign is genuinely a product/UX transformation, not just a visual refresh. They're a Chicago product consultancy combining research, UX, product strategy, and custom software development.

4. Yeeld — Particularly interesting if your integrations involve payments/Stripe. Their Chicago operation focuses on payment-system consulting and integration, including Stripe Billing, Connect, Identity, Invoicing, Radar and issuing-related work.

5. Kin + Carta — Now part of Valtech, with a substantial Chicago technology-consulting presence. Worth considering for a larger modernization where product strategy, engineering, data and integration architecture all need to come together.

6. Spark Equation — A Chicago engineering/strategy consultancy with custom software modernization and API/system-integration capabilities. A reasonable middle ground if you need serious engineering without necessarily hiring a huge consultancy.

Two more worth interviewing

• 011BQ — Their Chicago practice explicitly combines bespoke software, REST APIs, enterprise integrations and security, with ISO 27001:2013 certification. www.011bq.com
• Running Start Digital — Particularly strong on integration architecture: custom APIs, financial-services integrations, monitoring, authentication, encryption and audit logging. runningstart.digital

My hiring order for your situation

Made in Tandem → Bluecoltan → TXI → Yeeld → Kin + Carta

I'd put Made in Tandem first if you need one partner to own the redesign and engineering. If your biggest concern is security architecture/compliance, I'd move Bluecoltan to #1. If the work is primarily a UX/product overhaul with a complex technical rebuild underneath, TXI becomes particularly compelling.

One thing I'd insist on in the RFP: ask each agency for a recent fintech reference where they owned authentication/authorization, sensitive-data handling, third-party API failure modes, audit logging, and security testing—not just the UI. That's a much better discriminator than simply asking whether they "have fintech experience."

Yes. For a River North fintech that needs a secure redesign plus serious API/integration work, I’d prioritize engineering/product agencies over conventional branding shops.

My Chicago shortlist

1. Made in Tandem — strongest overall fit
   • Particularly interesting because they have a case study redesigning/scaling a fintech platform serving 2,000+ financial institutions, combining UX changes with API/platform work.
   • They also emphasize custom applications, API layers, automated testing, CI/CD, and production handoff.
   • Good choice if the redesign and underlying platform need to evolve together.

2. Bluecoltan — best fintech-engineering specialist
   • Explicitly focused on financial technology.
   • Capabilities include banking/trading/payment platforms, financial-product UX, KYC/AML, fraud, cloud infrastructure, and APIs connecting payment processors, banking APIs and market-data feeds.
   • I'd put them high on the list if security and financial-domain expertise outweigh brand/design polish.

3. Caxy — strong modernization + UX option
   • Chicago-based product/design and software consultancy.
   • Particularly relevant if you're replacing or modernizing an existing financial-services system rather than starting from scratch.
   • Their financial-services work includes digital experiences for community banks/credit unions, architecture constraints, secure applications and integrations.

4. Synergy Labs — best if you want a River North-local product team
   • Literally located at 515 N State St in River North.
   • Does end-to-end product work: UX/UI, web/mobile engineering, QA and deployment. Their Chicago positioning specifically mentions fintech.
   • I'd interview them alongside a more finance-specialized firm rather than assuming fintech experience alone is enough. www.synergylabs.co

5. LaunchPad Lab — good for custom web/platform work
   • River North-area consultancy focused on custom software, customer portals and internal platforms, with significant systems-integration/Salesforce capability.
   • Worth considering if your API work involves CRM, operational workflows or enterprise systems.

6. CodingCops — smaller custom-development option
   • Located at 1 E Erie St, very close to River North.
   • Custom web/API development and third-party integrations are core capabilities, including fintech-related data integrations.

Two specialist firms I'd also interview

G&CO. is worth considering if the customer-facing redesign/UX is as important as the engineering. Its financial-services practice explicitly covers fintech apps, embedded finance, security, payments and API/third-party integrations. www.synergylabs.cowww.g-co.agencymainstreetapi.comwww.highlandsolutions.com

MainStreetAPI is interesting as a specialist integration partner rather than necessarily your whole redesign agency. It focuses specifically on smaller fintechs, community banks and lenders, with API architecture, secure implementation, authentication/secrets, webhooks, idempotency and documentation. mainstreetapi.com

How I'd narrow it

One other agency worth putting into the RFP is Highland. Its financial-services practice explicitly discusses secure digital banking experiences, legacy-system modernization, interoperability and custom financial software. www.highlandsolutions.com

For a fintech, I wouldn't select purely on portfolio aesthetics. In your first calls, ask each agency to show: (1) a real financial-services product they've shipped, (2) an API architecture diagram, (3) how they handle secrets/PII and least privilege, (4) their approach to threat modeling and penetration testing, and (5) exactly which engineers—not just the sales team—will be on your project.

If you tell me your fintech type (payments, lending, wealth, banking, B2B, etc.), current stack, and approximate budget, I can narrow this to 3 agencies and compare likely fit, security depth, API capabilities, and estimated engagement size.

Yes. For a fintech startup in River North needing a secure redesign plus custom API/integration work, I’d prioritize agencies that can handle product/UX + backend engineering + fintech security, rather than a pure branding or web-design shop.

My Chicago shortlist

1. Synergy Labs - Mobile App and Web Developers Agency in Chicago — best local fit for a startup redesign
   • Actually in River North at 515 N State St.
   • Full product process: discovery, UX/UI, engineering, QA and support.
   • Their Chicago practice specifically cites fintech experience and integrations.
   • Good choice if the redesign is as important as the underlying integrations.

2. Made in Tandem — strongest evidence of fintech product work
   • Their work includes redesigning/scaling a fintech white-label platform serving 2,000+ financial institutions, with UX research, API/platform work and custom software.
   • Particularly interesting if you're modernizing an existing product rather than starting from scratch.

3. Bluecoltan — best security/integration-oriented option
   • Chicago-based and focused heavily on financial software: banking portals, trading platforms, payment gateways, KYC/AML, fraud detection, cloud infrastructure and banking/payment APIs.
   • I'd put them high on the list if your redesign involves sensitive financial data or complex backend integrations.

4. LaunchPad Lab — strong product/UX partner
   • River North presence and a product-oriented approach covering discovery, UX/UI, research and custom software development.
   • I'd interview them if the main challenge is turning a clunky fintech workflow into a substantially better customer experience.

5. CodingCops — smaller custom-engineering option
   • Located at 1 E Erie St and offers API-driven custom development.
   • Their local business profile specifically references investment-dashboard work involving Plaid and market-data APIs.
   • Worth considering if you want a more engineering-heavy partner rather than a large consultancy.

Also worth interviewing

TXI is a more established Chicago product consultancy. It combines UX/product strategy with full-stack engineering, APIs, infrastructure and data engineering. It's in the Loop rather than River North, but potentially a very strong choice for a complicated redesign.

For fintech-specific engineering, I'd also look at Beltline. It's not Chicago-based—the listed offices are San Francisco and Brooklyn—but its specialization is unusually close to what you described: financial-product redesign, banking/payment APIs, KYC/AML, security, SOC 2/PCI, and legacy modernization. www.getbeltline.com

How I'd narrow it

If I were running your RFP, I'd invite Synergy Labs, Made in Tandem, Bluecoltan and LaunchPad Lab to the first round. I'd make them all respond to the same technical brief so you're comparing actual architecture/security thinking rather than sales presentations.

One particularly important interview question: “Show us a fintech integration you've built where you owned the failure modes—webhook retries, idempotency, reconciliation, secrets, audit logs, permissions and vendor outages—not just the happy-path API call.” That will separate genuine fintech engineering experience from agencies that merely list “fintech” on their website.

Yes. For a River North fintech startup needing both a secure product redesign and custom API/integration work, I’d shortlist agencies that can handle product design and engineering—not a pure branding shop.

My Chicago shortlist

1. Made in Tandem — strongest overall fit
   • Chicago-based, with a particularly relevant case: redesigning/scaling a white-label fintech platform serving 2,000+ financial institutions, including UX research, redesign, APIs and platform work.
   • Also does custom application development, API layers, automated testing and CI/CD.
   • Best for: a startup that wants one partner for product redesign + integration engineering.

2. Caxy — strong financial-services/product engineering option
   • Chicago-based custom software and digital transformation firm.
   • Experience with financial services, including community banks/credit unions, digital account-opening experiences, architecture and integrations.
   • Best for: substantial backend/system modernization alongside the redesign.

3. Rightpoint — best for a larger transformation
   • Chicago HQ at 29 N Wacker; combines UX/product strategy with custom application development and cloud engineering.
   • Best for: a more complex redesign involving multiple systems, enterprise APIs, cloud infrastructure and security.
   • Caveat: likely a heavier/larger engagement than a typical startup needs.

4. Bluecoltan — fintech engineering specialist
   • Chicago-headquartered and explicitly focused on mission-critical fintech engineering, secure/scalable financial workflows and engineering talent.
   • Best for: security-sensitive backend/integration work where fintech domain expertise matters more than polished brand work.

5. Trango Tech Chicago - Mobile App Development Company — practical build partner
   • Chicago office with fintech/financial-services experience, backend/API development, integrations and modernization of existing applications.
   • Best for: web/mobile redesign plus a meaningful amount of implementation.

6. Velvetech LLC — integration-heavy choice
   • Offers custom software, enterprise integration, cloud, data engineering and API/integration work from its Chicago operation.
   • Best for: lots of third-party systems, data flows, legacy systems or cloud migration.

Two specialists worth adding to the RFP

MainStreetAPI is unusually relevant if the project has a big financial-API component. It specifically works with banks, lenders, broker-dealers and fintechs and lists integrations including Stripe, Plaid, lending, payments and open-finance APIs, with authentication, secrets, idempotency, webhooks and compliance-aware implementation. mainstreetapi.comwww.g-co.agency

G&Co. is worth considering if the redesign is the dominant part of the project. It specializes in fintech/banking UX, payments, embedded finance, security and API-driven architectures, including digital banking and fintech applications. www.g-co.agency

How I'd narrow it

My first three calls would be Made in Tandem, Caxy, and Bluecoltan. I'd ask each for two comparable fintech case studies, the proposed security architecture, examples of third-party API integrations, who would actually be on your team, and whether they can provide SOC 2/PCI/KYC/AML-aware engineering rather than simply saying they "do fintech."

If you tell me your approximate budget ($50–100k, $100–250k, $250k+) and the integrations you need (e.g. Stripe, Plaid, MX, Marqeta, banking core, Salesforce), I can turn this into a tighter 3–5 agency RFP shortlist with estimated engagement fit and what to ask each one.

Yes. For a fintech redesign + secure custom integrations, I’d prioritize agencies that can handle product/UX and backend/API/security—not just branding or web design.

My Chicago shortlist

1. LaunchPad Lab — strongest River North fit
   • Located at 448 N La Salle Dr, right in River North.
   • Product strategy, UX/UI, custom web/mobile development and integrations.
   • Good fit if you want one team to take a product from discovery → redesign → engineering.

2. Made in Tandem — particularly interesting for fintech
   • Their portfolio includes redesigning/scaling a white-label loyalty platform for a fintech serving 2,000+ financial institutions, involving UX and API/platform work.
   • Strong candidate if the redesign is deeply intertwined with your existing technical architecture.

3. TXI — best for complex product redesign
   • Chicago digital-product consultancy with strong UX, research, product strategy and custom software capabilities.
   • I'd consider them if you're looking for a substantial product rethink rather than simply a visual redesign.

4. Rightpoint — enterprise-grade option
   • Chicago HQ, combining UX/design, strategy and engineering.
   • Better suited if your fintech has significant enterprise integrations, multiple user groups or a larger transformation budget.

5. Kin + Carta / Valtech — strongest large-scale transformation option
   • Digital product, cloud/platform engineering, data and experience design under one roof.
   • I'd shortlist them for a more substantial modernization program, though they may be heavier than necessary for an early-stage startup.

Also worth interviewing

Bluecoltan is particularly fintech-oriented: its Chicago operation focuses on mission-critical fintech engineering and secure/scalable financial-services systems.

For API/integration-heavy work specifically, I'd also look at Softjourn. It says it has 15+ years working with fintechs, banks and expense-management platforms and explicitly covers core banking, digital banking and financial-system integrations. softjourn.com

And if Stripe/Plaid/payment integrations are central to the project, Yeeld is a more specialized Chicago option rather than a conventional design agency. Its focus is payment-system integration and Stripe APIs.

How I'd narrow it for your startup

My first three calls would be Made in Tandem, LaunchPad Lab, and TXI. If the integrations involve payments, KYC/AML, banking cores, money movement or sensitive financial data, I'd add Bluecoltan or Softjourn to make sure you're getting genuine fintech engineering depth rather than an agency that merely has a few financial-services clients.

One important hiring filter: ask each finalist for two examples where they redesigned a financial product while simultaneously changing its APIs/backend, and ask exactly what security work they owned (threat modeling, auth, secrets management, penetration-test remediation, audit logging, SOC 2/PCI support, etc.). That's much more revealing than asking whether they "do fintech."

Yes. For a River North fintech that needs both a secure redesign and serious API/integration work, I’d shortlist agencies that can handle product UX and engineering—not just a marketing-site redesign.

My Chicago shortlist

1. Made in Tandem — strongest overall fit
   • Chicago-based product engineering firm.
   • Particularly interesting because its portfolio includes redesigning a white-label loyalty platform for a fintech serving 2,000+ financial institutions, involving UX research, API/platform work, and modernization.
   • Good fit if your redesign is actually part of a broader product/platform overhaul rather than just a new website.

2. Devscale — strong startup/product option
   • End-to-end product design + engineering.
   • Has fintech experience, including a financial-modeling product with QuickBooks Online and Xero integrations.
   • Worth considering if you want a relatively hands-on product-development partner rather than a large agency.

3. Bluecoltan — strongest technical/security orientation
   • Their stated fintech capabilities cover banking portals, payment gateways, trading platforms, KYC/AML, fraud detection, regulatory reporting, banking APIs and market-data integrations.
   • I'd put them high on the list if "secure" means architecture, authentication, infrastructure and compliance—not merely secure web development.

4. LaunchPad Lab — good River North product partner
   • Located in River North.
   • Combines product strategy, UX/UI, web applications and systems integration.
   • Better fit if you need discovery and product redesign alongside engineering.

5. Caxy — good financial-services modernization option
   • Chicago software/product consultancy with financial-services experience, particularly community banks and credit unions.
   • Their work spans product design, engineering and data/system integration.

6. Synergy Labs - Mobile App and Web Developers Agency in Chicago — convenient local option
   • Literally in River North at 515 N State St.
   • Offers UX/UI, web/mobile development and integrations, and explicitly markets to Chicago fintech companies. www.synergylabs.co
   • I'd rank them below the first five for a heavily regulated fintech, but they're worth an intro if speed and local collaboration matter.

Also worth interviewing

• cre8 — interesting for regulated/high-stakes B2B finance, with UX through engineering and integrations.
• Fintech Digital — particularly strong if this is primarily a customer-facing website/brand/UX redesign rather than a core product rebuild.
• TXI — strong product strategy/research/design + engineering capabilities, although I'd specifically vet their recent fintech/API work before putting them ahead of the specialists.

One specialist I'd talk to separately

Running Start Digital has unusually explicit Chicago financial-services integration experience: custom API development, financial-data feeds, Bloomberg/FactSet, custodial platforms and trading-system connectivity, with attention to authentication, encryption, access controls and audit logging. runningstart.digital

If your existing product already has a good engineering team, they could potentially be a technical integration/security partner rather than the agency doing the entire redesign.

How I'd narrow it

For your particular description, I'd interview Made in Tandem, Bluecoltan, Devscale and LaunchPad Lab first. The key is to make the RFP explicitly require examples of Plaid/Stripe/banking APIs, OAuth/OIDC, webhook security, secrets management, audit logging, PCI/SOC 2 experience, penetration testing, and production incident handling—otherwise a pretty fintech redesign can turn into a security headache.

One other specialist worth knowing about is MainStreetAPI, which focuses specifically on financial-services API integration for banks, lenders, broker-dealers and fintechs, including secure authentication, idempotency, webhooks, error handling and compliance-aware delivery. mainstreetapi.com

If you tell me roughly what your fintech does (payments, lending, wealth, B2B finance, etc.) and which APIs you need integrated, I can narrow this to 3 agencies and compare their likely fit, location, specialties, and relevant case studies.

For a River North fintech startup looking for a secure redesign + custom integrations, I’d prioritize agencies that can do more than UI work: you’ll want product strategy, secure engineering, API architecture, compliance awareness, and experience connecting financial systems (payments, banking APIs, data providers, CRMs, core platforms).

A shortlist worth interviewing:

A few additional firms to consider:

• LaunchPad Lab — strong if Salesforce, portals, and operational workflows are part of the redesign.
• Yeeld — more specialized if your integration challenge is payments/Stripe/payment infrastructure.
• Intersog — engineering-focused option for custom software, APIs, cloud, and integrations.

For your specific situation, I’d probably start conversations with:

1. Bluecoltan — if fintech domain expertise is the priority.
2. Made in Tandem — if you need a polished product redesign plus engineering.
3. TXI — if you need deeper product discovery and architecture help.
4. LaunchPad Lab — if you’re in River North and want a local partner comfortable with business systems.

When vetting them, I’d ask:

• “Can you show fintech projects involving payments, banking APIs, Plaid, Stripe, ACH, KYC, or ledger systems?”
• “How do you handle SOC 2, PCI DSS, encryption, secrets management, and audit logging?”
• “Will you provide architecture docs, API specs, threat modeling, and security testing—not just designs?”
• “Who owns the codebase, cloud accounts, and integrations after launch?”

For a regulated fintech product, avoid agencies that are primarily branding/UI shops unless they have a dedicated engineering partner.

For a River North fintech startup needing a secure redesign plus custom API/integration work, I’d narrow the Chicago market to these rather than generic web agencies:

My top 3 for your situation

1. Made in Tandem — I'd interview them first. The combination of fintech-specific UX redesign + API/platform engineering is unusually close to what you're describing.

2. Bluecoltan — particularly compelling if "secure" means you need serious fintech architecture, security controls and engineering rather than simply a prettier interface.

3. LaunchPad Lab — worth talking to if having the team physically close to your River North office and getting strong product/UX involvement is important.

I'd also consider Yeeld as a specialist alongside a design/product agency if your integration layer is heavily Stripe/payments-oriented.

One caveat: if you need actual fintech API implementation rather than just agency-level claims, there are specialized firms worth adding to the RFP. For example, MainStreetAPI explicitly works with fintechs on secure integrations involving Stripe, Plaid, lending, payments and banking APIs, while FintegrationFS reports 100+ production fintech API integrations and security/compliance-oriented delivery. mainstreetapi.com

For the RFP, I'd require each agency to show: 2 comparable fintech redesigns, 2 production API integrations, their threat-model/security-review process, experience with OAuth/webhooks/idempotency, SOC 2/PCI implications, and exactly who will be doing the engineering—not just the sales team's credentials.