Washington's fintech development market includes specialized product studios, Seattle-based consultancies, and global engineering firms with offices in the state. This list compares companies that can build or modernize banking platforms, payment systems, lending products, investment tools, financial data applications, and regulated digital experiences.
1. Itexus
Itexus builds enterprise fintech software for banks, brokers, investment firms, lenders, insurers, and fintech companies. Its work covers digital banking, payments, wallets, wealth management, trading, and lending. It also builds financial analytics and AI-assisted automation. The team handles legacy modernization, third-party integrations, automated testing, DevOps, and post-launch support.
Itexus serves clients across North America and has Washington experience from its work on Coinstar's digital wallet ecosystem. That project included mobile wallet apps, kiosk software, web interfaces, and a cloud API. The API supported payments, account linking, and digital asset transactions.
Key Facts
- Best for: Regulated fintech products with complex business logic and integrations
- Core services: Fintech software development, mobile apps, financial system modernization, AI implementation, QA, DevOps
- Specialization: Banking, trading, payments, lending, wealth management, and insurance software
- Location: US delivery coverage, with a US office in Dover, Delaware
- Notable strength: Experience building financial platforms that require auditability, secure integrations, and high-load performance
Contact Information
- Website: itexus.com
- Email: moc.suxeti@ofni
- Address: 8, The Green, STE road, Dover, DE 19901, United States
- LinkedIn: www.linkedin.com/company/itexus
- Facebook: www.facebook.com/itexus
- Twitter: x.com/ItexusSoft
- Instagram: www.instagram.com/itexus.soft
2. Akvelon
Akvelon, based in Bellevue, builds custom fintech and banking software. It also offers financial data, cybersecurity, cloud, and AI services. Its engineers work on secure financial apps, compliance automation, data platforms, and infrastructure for growing fintech products.
Akvelon takes on both new platforms and existing systems that need modernization. Projects can involve payment workflows, data processing, AI-based automation, or security controls. It can also add engineers to an internal product team. A local Washington office and a dedicated banking practice make it a practical choice for technically demanding work.
Key Facts
- Best for: Fintech teams needing custom engineering and AI capabilities
- Core services: Custom fintech development, financial software consulting, data intelligence, cloud engineering, cybersecurity
- Specialization: AI-powered financial applications and compliance automation
- Location: Bellevue, Washington
- Notable strength: Dedicated fintech and banking software development practice
Contact Information
- Website: akvelon.com
- E-mail: moc.nolevka@ofni
- Facebook: www.facebook.com/Akvelon
- Twitter: x.com/AkvelonInc
- LinkedIn: www.linkedin.com/company/akvelon
- Instagram: www.instagram.com/akveloninc
- Address: 3120 139th Avenue SE, Suite 100, Bellevue, WA 98005, USA
- Phone: +1(206)905-4626
3. Seattle Software Developers
Seattle Software Developers runs full-cycle custom development, from planning and architecture to deployment and ongoing optimization. The Bellevue team offers financial application development as a defined service. It focuses on accuracy, security, auditability, and enterprise-scale architecture.
It also builds web and mobile apps, cloud systems, APIs, and workflow automation. Blockchain products, advanced reporting, and staff augmentation round out the offer. The team can deliver a standalone fintech product or a financial feature inside a larger operational platform. Clients can hand over a complete build or fold the team into their own development roadmap.
Key Facts
- Best for: Washington businesses seeking a locally based development team
- Core services: Financial app development, custom software, cloud applications, integrations, mobile development
- Specialization: Enterprise-ready web, mobile, and operational platforms
- Location: Bellevue, Washington
- Notable strength: Full-cycle delivery and flexible staff augmentation options
Contact Information
- Website: seattlesoftwaredevelopers.com
- E-mail: moc.srepolevederawtfoselttaes@olleh
- Facebook: www.facebook.com/people/Seattle-Software-Developers/61575481697662
- LinkedIn: www.linkedin.com/company/seattle-software-developers
- Instagram: www.instagram.com/seattle.software.developers
- Address: 4 102nd Ave NE, Bellevue, WA 98004, USA
- Phone: +14253079066
4. Avanade
Avanade brings Microsoft-focused engineering, cloud, data, AI, cybersecurity, and business application skills to financial institutions. Its banking practice works on digital customer experiences, workplace systems, cloud modernization, analytics, and automation. It also updates the underlying technology behind established banking operations.
Avanade is headquartered in Seattle, so Washington clients get a local presence backed by an international delivery organization. It fits banks and fintech businesses already built on Microsoft Azure, Dynamics 365, Power Platform, Microsoft Fabric, or similar enterprise platforms.
Key Facts
- Best for: Financial institutions using the Microsoft technology ecosystem
- Core services: Cloud modernization, application development, data and AI, cybersecurity, business applications
- Specialization: Microsoft-based banking technology and digital transformation
- Location: Global headquarters in Seattle, Washington
- Notable strength: Close alignment with Microsoft platforms and enterprise architecture
Contact Information
- Website: www.avanade.com
- E-mail: moc.edanava@RP-AT
- LinkedIn: www.linkedin.com/company/avanade
- Instagram: www.instagram.com/avanadeinc
- Address: Global Headquarters, 1191 Second Avenue, Suite 100, Seattle, WA 98101
- Phone: +1 206 239 5600
5. Slalom Build
Slalom Build combines product strategy, experience design, software engineering, data, cloud, and quality engineering. In financial services, it helps banks and insurers modernize customer-facing technology and launch new digital products. It also replaces older systems that have become expensive to maintain.
Slalom Build can own product engineering while working with a client's internal business and technology teams. That suits financial organizations that need more than outsourced coding. Typical cases call for discovery, architecture, design, implementation, and organizational alignment. Slalom's wider business is headquartered in Seattle.
Key Facts
- Best for: Banks and insurers undertaking product-led transformation
- Core services: Product engineering, cloud development, data platforms, experience design, quality engineering
- Specialization: Modern digital products for financial services organizations
- Location: Seattle, Washington
- Notable strength: Combines consulting and hands-on product engineering
Contact Information
- Website: www.slalombuild.com
- E-mail: moc.molals@stneilc
- Twitter: x.com/Slalom
- LinkedIn: www.linkedin.com/company/slalom-consulting
- Instagram: www.instagram.com/slalomconsulting
- Address: 255 S King St, Suite 1800, Seattle, WA 98104, USA
6. Beyondsoft
Beyondsoft helps banking, financial services, and insurance organizations modernize through data, AI, cloud, business process, and digital engineering services. Its engineers build customer portals, analytics systems, and automation. They also run cloud migrations and build apps that connect financial workflows with enterprise data.
Its Americas head office is in Bellevue. Beyondsoft suits organizations that want an established delivery structure and several technical disciplines in one engagement. Founders looking for a very small studio may find it too large. The Washington office gives a local contact for projects backed by wider international teams.
Key Facts
- Best for: Enterprise banking and insurance technology programs
- Core services: Data and AI, cloud services, digital engineering, automation, business process management
- Specialization: Banking, financial services, and insurance technology
- Location: Americas headquarters in Bellevue, Washington
- Notable strength: Global engineering capacity supported by a Washington-based office
Contact Information
- Website: www.beyondsoft.com
- E-mail: moc.tfosdnoyeb.su@eov
- LinkedIn: www.linkedin.com/company/beyondsoft
- Address: 2010 156th Avenue NE, #301 Bellevue, Washington 98007
- Phone: +14252425419
7. AIM Consulting
AIM Consulting develops and modernizes digital products for organizations that need secure, scalable applications. Its financial services practice deals with legacy systems, cloud infrastructure, and regulatory requirements. It also covers identity, accessibility, data, and digital customer experiences.
AIM's digital product engineering team works from strategy and architecture through delivery and optimization. That helps when a financial platform must tie product development to infrastructure, analytics, compliance, and operational change. AIM has a Seattle presence. It can supply a complete project team or specialists who join an existing technology organization.
Key Facts
- Best for: Financial institutions modernizing applications and platforms
- Core services: Digital product engineering, application modernization, cloud, data analytics, delivery leadership
- Specialization: Secure technology solutions for financial services
- Location: Seattle, Washington
- Notable strength: Cross-functional teams spanning application, data, cloud, and project delivery
Contact Information
- Website: aimconsulting.com
- Facebook: www.facebook.com/AIM-Consulting-110822348973479
- Twitter: x.com/aimconsults
- LinkedIn: www.linkedin.com/company/aim-consulting-group
- Instagram: www.instagram.com/aimconsultinggroup
- Address: 150 120th Ave NE, Suite 400, Bellevue, WA 98005
- Phone: 2066245333
8. Logic20/20
Logic20/20, headquartered in Seattle, provides technology, data, analytics, transformation, and compliance services to financial organizations. Its financial work covers customer experience, data platforms, KYC and AML processes, and privacy controls. It also handles risk management and digital transformation.
The firm has worked with banks, payment companies, investment businesses, and financial services brands. It is a good candidate when software delivery is closely tied to data governance or regulatory operations. Logic20/20 can also help shape the operating model and technical roadmap around a new platform, so development is not treated as a separate track.
Key Facts
- Best for: Financial data, compliance, and transformation initiatives
- Core services: Digital transformation, data engineering, analytics, AI, compliance services
- Specialization: Technology and data solutions for financial services
- Location: Headquarters in Seattle, Washington
- Notable strength: Experience connecting financial technology with KYC, AML, privacy, and risk requirements
Contact Information
- Website: logic2020.com
- E-mail: moc.0202cigol@snoitulos
- Facebook: www.facebook.com/logic2020
- Twitter: x.com/Logic2020
- LinkedIn: www.linkedin.com/company/logic20-20-inc-
- Instagram: www.instagram.com/logic2020consulting
- Address: 1501 1st Ave South, Suite 310, Seattle, WA 98134
- Phone: (206)-576-0400
9. Globant
Globant designs and engineers digital products for banks and other financial services organizations. Its banking work includes core modernization, cloud adoption, digital channels, web applications, and super apps. It also builds data platforms and AI-supported customer and operational processes.
A Seattle office gives Globant a direct Washington presence, and its international delivery network supports larger transformation programs. It fits businesses that want software engineering combined with product design, cloud, data, and customer experience work. Globant also helps financial institutions turn scattered digital initiatives into one unified product ecosystem.
Key Facts
- Best for: Large digital banking and customer experience programs
- Core services: Product engineering, cloud development, AI, data platforms, experience design
- Specialization: Digital banking channels and core modernization
- Location: Seattle, Washington
- Notable strength: Ability to combine product design with large-scale engineering delivery
Contact Information
- Website: www.globant.com
- E-mail: moc.tnabolg@ih
- Facebook: www.facebook.com/Globant
- Twitter: x.com/globant
- LinkedIn: www.linkedin.com/company/globant
- Instagram: www.instagram.com/globant
- Address: 1601 5th Avenue, #603, WA 98101, Seattle
- Phone: +1 786-841-1898
10. EPAM
EPAM provides software engineering, product development, consulting, cloud, data, and experience design services. Its financial services practice works with banks, investment firms, insurers, payment businesses, and wealth management firms. The work centers on enterprise software and digital transformation.
EPAM has a Bellevue office that links its international engineering teams to a local Washington presence. It handles complicated modernization programs with older financial systems, high-volume data, digital customer channels, and multiple integration layers. It also builds platforms where product engineering must be coordinated with security, infrastructure, and long-term application management.
Key Facts
- Best for: Large, technically complex financial platforms
- Core services: Software engineering, product development, cloud, data, cybersecurity, experience design
- Specialization: Banking, capital markets, payments, wealth management, and insurance
- Location: Bellevue, Washington
- Notable strength: Deep product and platform engineering capacity
Contact Information
- Website: www.epam.com
- LinkedIn: www.linkedin.com/company/epam-systems
- Facebook: www.facebook.com/EPAM.Global
- Instagram: www.instagram.com/epamsystems
- Phone: +1-267-759-9000
- Address: 10900 NE 8th St, Suite 1680, Bellevue, WA 98004, USA
11. Techlusion
Techlusion is a Seattle product engineering studio that builds fintech systems from strategy and architecture through development, QA, deployment, and support. Its fintech work includes payment workflows, lending and credit decisioning, digital onboarding, and KYC and AML. It also covers fraud monitoring, open banking, embedded finance, and financial analytics.
The team builds customer portals, admin applications, cloud infrastructure, and AI-assisted risk tools. Techlusion suits startups and growing financial product teams that want senior engineers involved without a very large consultancy. Security and compliance are handled during architecture, not left until release.
Key Facts
- Best for: Startups and growing fintech product teams
- Core services: Product engineering, fintech development, cloud applications, AI, QA, DevOps
- Specialization: Payments, lending, onboarding, fraud systems, and embedded finance
- Location: Seattle, Washington
- Notable strength: Senior-led development from architecture through production launch
Contact Information
- Website: techlusion.io
- E-mail: oi.noisulhcet@ofni
- LinkedIn: www.linkedin.com/company/techlusion
- Instagram: www.instagram.com/techlusion_it
- Phone: +1-425-773-9055
12. Zenveus
Zenveus works with fintech founders and financial product teams serving Washington. It builds web, mobile, and SaaS platforms for payments, lending, embedded finance, dashboards, and regulated workflows. Clients can start with a technical audit, a focused buildout sprint, a product engineering pod, or full platform development.
Its stack covers Next.js, React Native, Flutter, Node.js, Python, cloud infrastructure, and AI integrations. Zenveus also builds role-based access, audit trails, encryption, and transaction logging. KYC and AML workflows and PCI-aware architecture are part of the work too. Lean teams that need senior technical ownership, delivered remotely, are a natural fit.
Key Facts
- Best for: Early-stage and growth-stage fintech teams serving Washington
- Core services: Product development, technical audits, platform hardening, AI integration, cloud engineering
- Specialization: Payment, lending, embedded finance, and regulated workflow software
- Location: Remote service coverage for Washington, with a US support center in Phoenix
- Notable strength: Flexible engagement models for building or stabilizing fintech products
Contact Information
- Website: zenveus.com
- E-mail: moc.suevnez@tcatnoc
- Facebook: www.facebook.com/zenveus
- LinkedIn: www.linkedin.com/company/zenveus
- Instagram: www.instagram.com/zenveushq
- Address: 4539 N 22nd St, Ste R, Phoenix, Maricopa County, Arizona, 85016
- Phone: +1 559-823-8997
13. Capgemini
Capgemini has offices in Bellevue and Seattle and provides technology services for banks and capital markets firms. Its work covers financial applications, cloud infrastructure, data, AI, and customer experience. It also handles regulatory technology and modernization of established banking environments.
Capgemini fits enterprise programs that span several departments or need coordination with major technology vendors. Financial organizations use it for application transformation, digital banking products, cloud migration, data modernization, and managed technology services. Its scale may be too much for a narrow startup MVP, but it suits multi-year banking initiatives.
Key Facts
- Best for: Enterprise banking and capital markets transformation
- Core services: Application services, cloud, data and AI, engineering, cybersecurity, managed services
- Specialization: Banking, payments, and capital markets technology
- Location: Bellevue and Seattle, Washington
- Notable strength: Broad enterprise delivery capacity across applications and infrastructure
Contact Information
- Website: www.capgemini.com
- Facebook: www.facebook.com/CapgeminiAmericas
- LinkedIn: www.linkedin.com/company/capgemini
- Instagram: www.instagram.com/capgeminiamericas
- Address: 15885 North East 28th Street Suite 100 Bellevue, WA 98008
- Phone: 1-404-806-4200
14. Deloitte
Deloitte combines financial services knowledge with software engineering, data, cloud, cybersecurity, compliance, and business transformation. Its dedicated financial technology offering includes software and services for accounting, administration, compliance, and market surveillance.
The firm has offices in Seattle and Bellevue. Deloitte is a good choice when a fintech implementation must line up with regulatory, risk, operational, or organizational requirements. Its engineering services cover the full software delivery lifecycle. One team can build or modernize the platform while others handle governance, controls, and the wider business change.
Key Facts
- Best for: Regulated financial technology and compliance-heavy transformation
- Core services: Financial technology software, engineering, data, cloud, cybersecurity, risk consulting
- Specialization: Financial administration, accounting, compliance, and surveillance systems
- Location: Seattle and Bellevue, Washington
- Notable strength: Connects software engineering with financial risk and regulatory expertise
Contact Information
- Website: www.deloitte.com
- LinkedIn: www.linkedin.com/company/deloitte
- Facebook: www.facebook.com/deloitte
- Twitter: x.com/deloitte
- Phone: +1206 716 7000
- Address: 1285 122nd Ave NE, Suite 300, Bellevue, WA 98005, United States
15. Infosys
Infosys offers financial services technology consulting, application development, modernization, cloud, AI, automation, and platform engineering. Its financial work covers digital banking, payments, risk and compliance, wealth management, data, and customer-facing systems. Its Finacle platform gives it direct experience with core banking and digital banking technology.
Infosys has an office in Bellevue, within reach of Washington enterprise clients. It fits projects that need a large delivery organization, an established banking technology practice, and support across several application or infrastructure areas. It works on both its own platforms and custom transformation programs.
Key Facts
- Best for: Banks requiring enterprise-scale application and platform modernization
- Core services: Financial services IT, application development, cloud, AI, automation, data engineering
- Specialization: Digital banking, core systems, payments, risk, and compliance
- Location: Bellevue, Washington
- Notable strength: Combines custom engineering with established banking platforms such as Finacle
Contact Information
- Website: www.infosys.com
- Facebook: www.facebook.com/Infosys
- Twitter: x.com/infosys
- LinkedIn: www.linkedin.com/company/infosys
- Address: 14475 NE 24th Street, Suite 210, Bellevue, WA 98007
- Phone: +1 512 953 1571
Conclusion
Washington gives fintech teams an unusually broad choice of development partners. Some companies on this list are compact engineering studios that can move quickly on an MVP, payment workflow, or lending product. Others bring the scale needed for core banking modernization, enterprise data platforms, and compliance-heavy transformation. The right fit depends less on company size than on how closely its experience matches the system you actually need to build.
Before signing a contract, look beyond the polished portfolio and talk through integrations, regulatory responsibilities, security controls, and post-launch ownership. Fintech projects have a habit of becoming more complicated once real transactions and sensitive customer data enter the picture. A strong partner will spot those complications early, explain the tradeoffs clearly, and build a platform that remains manageable after the first release.