Top 15 Fintech Web Development Companies in the USA (2026) - banner

Top 15 Fintech Web Development Companies in the USA (2026)

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    Targets we’ve achieved:
    Increased US Software Development Company's annually acquired clients by 400% *
    Generated 50+ business opportunities for UK Architecture & Design Services Provider *
    Reduced cost per lead by over 6X for Dutch Event Technology Company *
    Reached out to 13,000 target prospects and generated 400 opportunities for Swiss Sports Tech Provider *
    Boosted conversion rate of Ukrainian IT Company by 53.6% *
    Increased US Software Development Company's annually acquired clients by 400% *
    Generated 50+ business opportunities for UK Architecture & Design Services Provider *
    Reduced cost per lead by over 6X for Dutch Event Technology Company *
    Reached out to 13,000 target prospects and generated 400 opportunities for Swiss Sports Tech Provider *
    Boosted conversion rate of Ukrainian IT Company by 53.6% *
    Increased US Software Development Company's annually acquired clients by 400% *
    Generated 50+ business opportunities for UK Architecture & Design Services Provider *
    Reduced cost per lead by over 6X for Dutch Event Technology Company *
    Reached out to 13,000 target prospects and generated 400 opportunities for Swiss Sports Tech Provider *
    Boosted conversion rate of Ukrainian IT Company by 53.6% *
    Increased US Software Development Company's annually acquired clients by 400% *
    Generated 50+ business opportunities for UK Architecture & Design Services Provider *
    Reduced cost per lead by over 6X for Dutch Event Technology Company *
    Reached out to 13,000 target prospects and generated 400 opportunities for Swiss Sports Tech Provider *
    Boosted conversion rate of Ukrainian IT Company by 53.6% *
    Increased US Software Development Company's annually acquired clients by 400% *
    Generated 50+ business opportunities for UK Architecture & Design Services Provider *
    Reduced cost per lead by over 6X for Dutch Event Technology Company *
    Reached out to 13,000 target prospects and generated 400 opportunities for Swiss Sports Tech Provider *
    Boosted conversion rate of Ukrainian IT Company by 53.6% *
    Increased US Software Development Company's annually acquired clients by 400% *
    Generated 50+ business opportunities for UK Architecture & Design Services Provider *
    Reduced cost per lead by over 6X for Dutch Event Technology Company *
    Reached out to 13,000 target prospects and generated 400 opportunities for Swiss Sports Tech Provider *
    Boosted conversion rate of Ukrainian IT Company by 53.6% *
    AI Summary
    Sergii Steshenko
    CEO & Co-Founder @ Lengreo

      Fintech web development companies build and modernize the browser-based products behind banking, payments, lending, investment management, insurance, and other financial services. The companies below combine web engineering with financial software experience and either maintain a US presence or work directly with the US market. The list focuses on relevant technical capabilities, financial domain experience, delivery models, and the types of fintech projects each provider handles.

       

      1. LenGreo

      1. LenGreo

      Lengreo combines custom web development with product planning, UX/UI work, quality assurance, and broader digital services. Its development practice covers websites, web applications, business platforms, APIs, and custom software, while its published fintech work includes online financial products and customer-facing platforms. The company can be useful when a fintech website or web application also needs to support SEO, lead generation, or wider customer acquisition activity rather than operating as an isolated technical project. Lengreo works internationally, with locations in Amsterdam and Kyiv and services aimed at clients in the US and other markets.

      Key Facts

      • Core services: Fintech web development, web applications, UX/UI design, quality assurance
      • Best for: Fintech businesses combining web development with digital growth support
      • Specialization: Business websites, digital platforms, and custom web products
      • Industries: Fintech, SaaS, software, technology
      • Locations: Amsterdam, Netherlands and Kyiv, Ukraine

      Contact Information

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      2. Praxent

      2. Praxent

      Praxent has a focused position in financial technology rather than operating as a general-purpose development agency. The Austin company is an AI consulting and engineering firm built specifically for fintech, with experience covering lending, banking, insurance, and financial technology providers. Its work includes product engineering, backend development, modernization, cloud development, integrations, and user experience. This makes Praxent particularly relevant to financial organizations replacing older systems or developing web products that need to connect with established financial infrastructure and business processes.

      Key Facts

      • Best for: Fintech modernization and complex financial product engineering
      • Core services: Software engineering, backend development, product development, modernization
      • Specialization: Fintech and financial services technology
      • Industries: Lending, banking, insurance, fintech
      • Location: Austin, Texas

      Contact Information

      • Website: praxent.com
      • E-mail: [email protected] 
      • LinkedIn: www.linkedin.com/company/praxent
      • Phone: (512) 553-6830

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        3. Itexus

        3. Itexus

        Itexus concentrates heavily on financial software development and works with banks, brokers, fintech businesses, investment companies, and other financial organizations. Its capabilities cover online banking platforms, payment products, digital wallets, lending systems, trading applications, wealth management software, financial analytics, and AI-enabled financial tools. Web development is supported by product discovery, architecture, UI/UX design, integrations, quality assurance, cloud delivery, and ongoing maintenance. The company is headquartered in the United States and operates a US office in Dover, Delaware.

        Key Facts

        • Best for: Regulated fintech products and integration-heavy financial platforms
        • Core services: Fintech web development, software engineering, UI/UX, QA, integrations
        • Specialization: Banking, payments, trading, wealth management, and lending
        • Project types: Web applications, financial dashboards, digital platforms, modernization
        • Location: Dover, Delaware

        Contact Information

        • Website: itexus.com
        • E-mail: [email protected]
        • Facebook: www.facebook.com/itexus
        • Twitter: x.com/ItexusSoft
        • LinkedIn: www.linkedin.com/company/itexus-fintech-software
        • Instagram: www.instagram.com/itexus.soft
        • Address: 8, The Green, STE R, Dover, DE 19901, United States
        4. ScienceSoft

        4. ScienceSoft

        ScienceSoft works across web engineering and financial software, giving it relevant experience for both customer-facing fintech applications and complex internal systems. Its fintech offering includes banking, lending, investment, payment, and other financial solutions, while its broader web development practice covers online banking portals and custom web applications. The company can manage architecture, UX/UI, engineering, integration, quality assurance, modernization, cloud migration, and long-term support. Its US operation is based in McKinney in the Dallas area, making it a practical option for financial companies that prefer a provider with an established American presence.

        Key Facts

        • Best for: Complex financial systems and web application modernization
        • Core services: Web development, financial software development, integration, QA, cloud
        • Specialization: Banking, lending, investment, and financial management software
        • Project types: Banking portals, web applications, modernization, financial platforms
        • Location: McKinney, Texas

        Contact Information

        • Website: www.scnsoft.com
        • E-mail: [email protected]
        • Facebook: www.facebook.com/sciencesoft.solutions
        • Twitter: x.com/ScienceSoft
        • LinkedIn: www.linkedin.com/company/sciencesoft
        • Address: 5900 S. Lake Forest Drive, Suite 300, McKinney, Dallas area, TX-75070
        • Phone: +1 214 306 6837
        5. Vention

        5. Vention

        Vention maintains a dedicated fintech practice alongside its wider software engineering business. Its financial development services cover web and mobile applications, payment gateways, trading platforms, open banking systems, custom APIs, lending solutions, insurance technology, and wealth management products. Published projects include work with DealCloud, StoneX, Barchart, and other financial technology businesses. Vention can deliver a complete project or extend an existing engineering team with frontend, backend, cloud, data, and other specialists. The company is headquartered in New York and also has a San Francisco presence.

        Key Facts

        • Best for: Fintech companies scaling engineering capacity or building complex platforms
        • Core services: Web development, financial software, dedicated teams, cloud, data
        • Specialization: Payments, trading, lending, wealth management, insurance
        • Project types: Web apps, trading systems, APIs, payment platforms, modernization
        • Location: New York, New York

        Contact Information

        • Website: ventionteams.com
        • E-mail: [email protected]
        • Twitter: x.com/ventionteams
        • LinkedIn: www.linkedin.com/company/ventionteams
        • Instagram: www.instagram.com/ventionteams
        • Address: 575 Lexington Avenue, 14th Floor, New York, NY 10022 
        • Phone: +1 (718) 374-5043
        6. Simform

        6. Simform

        Simform develops financial technology products across banking, payments, lending, mortgages, wealth management, and other BFSI use cases. Its financial services offering includes digital customer onboarding, payment systems, P2P lending platforms, mortgage automation, portfolio tools, RegTech solutions, and financial integrations. The company also provides cloud engineering, application modernization, product development, DevOps, data engineering, and engineering team extension. Simform’s financial work spans both web and mobile channels, making it relevant when a fintech platform must provide a consistent experience across multiple customer touchpoints.

        Key Facts

        • Best for: Cloud-based fintech platforms and large product engineering programs
        • Core services: Product engineering, web development, cloud, DevOps, data engineering
        • Specialization: Banking, payments, lending, mortgages, wealth management
        • Project types: Web applications, payment products, data platforms, modernization
        • Location: Orlando, Florida

        Contact Information

        • Website: www.simform.com
        • Facebook: www.facebook.com/simform
        • Twitter: x.com/simform
        • LinkedIn: www.linkedin.com/company/simform
        • Instagram: www.instagram.com/_simform
        • Address: 111 North Orange Avenue, Suite 800, Orlando, Florida 32801, United States 
        7. Saritasa

        7. Saritasa

        Saritasa provides custom financial software development for fintech startups, financial institutions, marketplaces, and other businesses handling financial workflows. Its services cover web development, mobile applications, data analysis systems, database development, legacy modernization, and project takeovers. The company also highlights experience with financial compliance, security, analytics, and reporting. Saritasa has offices in Irvine and Tampa and serves clients across the United States, which can make it relevant for buyers seeking a US-based delivery relationship rather than an entirely offshore model.

        Key Facts

        • Best for: US businesses needing custom fintech software and web engineering
        • Core services: Web development, custom software, databases, UX/UI, modernization
        • Specialization: Financial software and fintech product development
        • Project types: Financial web applications, data systems, portals, legacy upgrades
        • Locations: Irvine, California and Tampa, Florida

        Contact Information

        • Website: www.saritasa.com
        • E-mail: [email protected] 
        • Facebook: www.facebook.com/SaritasaLLC
        • Twitter: x.com/SaritasaLLC
        • LinkedIn: www.linkedin.com/company/saritasa
        • Address: 19900 MacArthur Blvd, #650, Irvine, CA 92612
        • Phone: 888.971.6751
        8. A-Listware

        8. A-Listware

        A-Listware combines custom software development with dedicated engineering teams and has a specific financial software practice. Its published financial capabilities cover banking systems, insurance software, investment products, cryptocurrency services, web applications, and hybrid fintech solutions. The company can provide frontend and backend development, UI/UX design, testing, DevOps, cybersecurity, data engineering, and ongoing technical support. This model can suit fintech organizations that already have internal product leadership but need additional engineering capacity for web platforms, integrations, or modernization work. A-Listware maintains a US location in North Bergen, New Jersey.

        Key Facts

        • Best for: Fintech companies needing dedicated developers or extended teams
        • Core services: Web development, software engineering, QA, UI/UX, DevOps
        • Specialization: Financial software and engineering team extension
        • Industries: Fintech, payments, banking, insurance, lending, investment
        • US location: North Bergen, New Jersey

        Contact Information

        • Website: a-listware.com
        • E-mail: [email protected]
        • Facebook: www.facebook.com/alistware
        • LinkedIn: www.linkedin.com/company/a-listware
        • Address: North Bergen, NJ 07047, USA 
        • Phone: +1 (888) 337 93 73
        9. Innowise

        9. Innowise

        Innowise has a dedicated financial technology practice covering banking, payments, lending, investments, insurance, digital wallets, embedded finance, and compliance-related systems. Its development services include new fintech platforms, modernization, integrations, cybersecurity, KYC and AML automation, and financial software testing. The company also has a web development case involving a SaaS banking platform for transfers and merchant analytics built with Python, React, AWS, and other technologies. Innowise maintains US operations in Florida and lists additional US contact coverage for New York.

        Key Facts

        • Best for: Fintech platforms requiring web, data, cloud, and integration engineering
        • Core services: Fintech development, web applications, integrations, cybersecurity, AI
        • Specialization: Banking, payments, lending, wallets, compliance automation
        • Project types: SaaS platforms, payment processing, analytics, modernization

        Contact Information

        • Website: innowise.com
        • E-mail: [email protected]
        • Twitter: x.com/innowisegroup
        • LinkedIn: www.linkedin.com/company/innowise-group
        • Address: 405 Lexington Avenue, 26th Floor, NY 10174 
        • Phone: +1 917 267 7727
        10. EffectiveSoft

        10. EffectiveSoft

        EffectiveSoft develops web and software products for financial organizations, with published projects covering investment platforms, trading systems, financial recovery software, and other fintech applications. Its CNote project included web development, UX/UI design, QA, investment management functionality, account administration, withdrawals, and Dwolla integration. The company has also developed a web component for a multi-platform trading system. EffectiveSoft maintains several US offices, including locations in San Diego, San Francisco, Pittsburgh, and Durham, which gives American financial companies multiple local points of contact.

        Key Facts

        • Best for: Investment, trading, and financial web application development
        • Core services: Web development, software engineering, UX/UI, QA
        • Specialization: Fintech applications and financial platforms
        • Project types: Investment portals, trading platforms, financial SaaS
        • US locations: California, Pennsylvania, and North Carolina

        Contact Information

        • Website: www.effectivesoft.com
        • E-mail: [email protected]
        • Facebook: www.facebook.com/EffectiveSoft
        • Twitter: x.com/EffectiveSoft
        • LinkedIn: www.linkedin.com/company/effectivesoft
        • Address: 4445 Eastgate Mall, Suite 200, San Diego, CA 92121
        • Phone: 1-800-288-9659
        11. S-PRO

        11. S-PRO

        S-PRO provides custom web development with a strong concentration in financial technology. Its web portfolio includes work connected with private banking, digital assets, investment platforms, brokerage, and mobile banking. The company handles frontend and backend engineering, business analysis, UX/UI, cloud, data, AI, blockchain, and long-term product support. S-PRO can therefore cover more than the visible website layer when a fintech web application depends on complex backend services, integrations, or financial data. Its US business presence includes Salt Lake City and Austin.

        Key Facts

        • Best for: Financial platforms combining product design and complex engineering
        • Core services: Web development, frontend, backend, cloud, data, UX/UI
        • Specialization: Banking, investment, digital assets, and fintech products
        • Project types: Financial web apps, investment platforms, banking products
        • US locations: Salt Lake City, Utah and Austin, Texas

        Contact Information

        • Website: s-pro.io
        • E-mail: [email protected]
        • Facebook: www.facebook.com/sprocompany
        • LinkedIn: www.linkedin.com/company/s-pro
        • Instagram: www.instagram.com/sprocompany
        • Address: Kiln SLC, 26 S Rio Grande St, UT 84101, USA
        • Phone: +41 41 588 22 54
        12. 21century.tech

        12. 21century.tech

        21century.tech is an AI-native software studio. Its relevance to financial product teams comes from full-stack software development, MVP delivery, third-party integrations, production deployment, and legacy refactoring. Senior engineers remain responsible for architecture, business logic, code review, security judgment, and QA, while AI tools support implementation, testing, documentation, and refactoring. This model may fit fintech startups that need a custom web product or integration delivered by a compact engineering team, particularly when deep banking-specific consulting is not the primary requirement.

        Key Facts

        • Best for: Fintech startups building MVPs, integrations, or full-stack features
        • Core services: Custom software development, full-stack engineering, integrations, refactoring
        • Development model: Senior engineers with AI-assisted implementation
        • Project types: MVPs, web products, integrations, legacy modernization
        • Location: Miami, USA, remote-first

        Contact Information

        13. TatvaSoft

        13. TatvaSoft

        TatvaSoft develops financial software for fintech companies, banks, lenders, insurers, and other financial organizations. Its financial development practice covers consumer finance, online forex systems, fraud prevention, investment products, payment and cash management, microfinance, and other applications. The company specifically develops web-based fintech solutions and provides web development alongside custom software engineering, mobile applications, cloud, DevOps, and QA. TatvaSoft maintains a US office in Dallas, giving American fintech companies a local business presence while development resources operate across multiple international locations.

        Key Facts

        • Best for: Lending, forex, payment, and financial workflow applications
        • Core services: Financial software, web development, integrations, QA, cloud
        • Specialization: Consumer finance, forex, payments, lending, investment
        • Project types: Financial web apps, loan systems, payment platforms, portals
        • Location: Dallas, Texas

        Contact Information

        • Website: www.tatvasoft.com
        • E-mail: [email protected]
        • Facebook: www.facebook.com/TatvaSoft
        • Twitter: x.com/tatvasoft
        • LinkedIn: www.linkedin.com/company/tatvasoft
        • Address: 17304 Preston Road, Suite 800, Dallas, TX 75252
        • Phone: +1 503 832 4034
        14. Intellectsoft

        14. Intellectsoft

        Intellectsoft develops custom software for enterprises and technology companies and maintains a financial software practice alongside broader digital transformation services. Its capabilities include software architecture, custom applications, product strategy, data engineering, UX, cloud, and ongoing development support. Financial projects can draw on the same web and backend engineering resources used for other complex enterprise products, which makes the company more suitable for substantial application or modernization work than a basic financial marketing website. Intellectsoft maintains a US office in New York City and provides direct US contact numbers.

        Key Facts

        • Best for: Enterprise fintech products and larger modernization programs
        • Core services: Custom software, architecture, web engineering, data, UX/UI
        • Specialization: Enterprise digital products and financial software
        • Project types: Financial applications, internal platforms, modernization
        • Location: New York, New York

        Contact Information

        • Website: www.intellectsoft.net
        • E-mail: [email protected]
        • Facebook: www.facebook.com/Intellectsoft
        • Twitter: x.com/Intellectsoft 
        • LinkedIn: www.linkedin.com/company/intellectsoft
        • Address: 500 Fashion Ave Fl 8A, New York City, NY 10018, USA
        • Phone: +1 (650) 233-6196
        15. Andersen

        15. Andersen

        Andersen provides software development services for fintech companies, banks, insurers, investment organizations, and other financial institutions. Its fintech development practice includes digital banking platforms, payment systems, lending products, wealth management software, digital wallets, cross-border transfer solutions, and cloud-native financial platforms. The company also supports financial software with architecture, APIs, cybersecurity, DevOps, UI/UX, quality assurance, and regulatory-focused engineering. Andersen fintech teams work with organizations across the US as well as Europe and Asia, making it relevant for US-focused fintech development projects.

        Key Facts

        • Best for: Enterprise fintech platforms and compliance-focused development
        • Core services: Fintech development, web development, software engineering, QA, DevOps
        • Specialization: Digital banking, payments, lending, investment, financial platforms
        • Project types: Web platforms, banking systems, financial APIs, digital wallets
        • Markets served: United States, Europe, Asia

        Contact Information

        • Website: andersenlab.com
        • E-mail: [email protected]
        • Facebook: www.facebook.com/AndersenSoftwareDev
        • Twitter: x.com/AndersenLabs
        • LinkedIn: www.linkedin.com/company/andersen-softwaredev
        • Instagram: www.instagram.com/andersen.global
        • Address: 1 St Katharine’s Way, 6th floor, London E1W 1YL, UK 
        • Phone: +44 207 048 6755 

        Fintech web development companies in the USA support a wide range of projects, from banking portals and payment platforms to lending systems, investment tools, and customer-facing financial applications. The right provider depends on the complexity of the product, required integrations, compliance needs, internal technical resources, and preferred delivery model. Comparing relevant fintech experience, technical capabilities, and project scope can help businesses narrow the list to providers that fit their requirements.

        AI Summary