Best California Fintech Software Development Companies

220 Companies - Rankings updated: August 20, 2026

DesignRush vets all agencies based on professional qualifications and verified customer feedback to help you choose confidently. Some featured agencies maintain paid sponsorships.

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Fintech
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  • PRIME IT

    Innovative Web & Custom Soft Development Solutions

    Innovative Web & Custom Soft Development Solutions

    DESIGN, DEVELOP, DEPLOY!!! The PRIME is a team of highly skilled and experienced professionals in the field of Web Development and Custom Software Development PRIME means - Punctuality, Quickness, Honesty and Professional work! WE HAVE GOT YOU COVERED!!!...

    Top Services:

    • Software Development
    • Mobile App Development
    • Web Development
    • Web Design
    • UI/UX Design
    • Show more
    Location
    Los Angeles, California
    Number of Employees
    Under 49
    Average Hourly Rate
    $50/hr
    Minimal Budget
    $10,000 - $25,000
    Portfolios Count
    4 Projects Listed
    View Profile

  • Gearheart IO

    Product development studio for innovators

    Product development studio for innovators

    We are a product development studio for innovators, specializing in B2B SaaS platforms for productivity, analytics, marketing, sales, and engineering. We work with serial entrepreneurs, startup founders, and CTOs at industrial enterprises to create time through innovative products...

    Top Services:

    • Web Development
    • Mobile App Development
    • CRM Consulting
    • ECM Consulting
    • IT Services
    • Show more
    Location
    San Francisco, California
    Number of Employees
    Under 49
    Average Hourly Rate
    $60/hr
    Minimal Budget
    $50,000 & Up
    Portfolios Count
    14 Projects Listed
    View Profile

  • AJProTech

    Transforming Your Ideas Into Successful Products.

    Transforming Your Ideas Into Successful Products.

    AJProTech is a leading IoT product development studio. With a dedicated team of expert engineers covering electrical, mechanical, software, and supply chain domains, the agency offers full-service support from concept to mass production, transforming clients' ideas into successful products. From conducting...

    Top Services:

    • Software Development
    • Mobile App Development
    • IoT
    Location
    Calabasas, California
    Number of Employees
    Under 49
    Average Hourly Rate
    $149/hr
    Minimal Budget
    $50,000 & Up
    Portfolios Count
    1 Project Listed
    View Profile
    5.0 5.0 (4)

  • LYQX

    Mobilize the Future, Faster

    Mobilize the Future, Faster

    LYQX is a dynamic mobile and website development agency based in Ukraine, driven by a passionate team of designers and developers with over five years of experience. Specializing in UX/UI design and software development, the agency brings creativity and expertise to every project, ensuring exceptional results...

    Top Services:

    • Mobile App Development
    • Software Development
    • Web Development
    • UI/UX Design
    • eCommerce Development
    • Show more
    Location
    San Francisco, California
    Number of Employees
    Under 49
    Average Hourly Rate
    $49/hr
    Minimal Budget
    $1,000 - $10,000
    Portfolios Count
    8 Projects Listed
    View Profile

  • A-CX

    Designed for the future. Engineered today.

    Designed for the future. Engineered today.

    A-CX is a boutique software design and development partner empowering businesses focusing on Approachable AI and Secure Cloud solutions. We deliver user-centered software development services through cutting-edge design and robust engineering that drive smarter, scalable outcomes...

    Top Services:

    • Software Development
    • AI Development
    • Cybersecurity
    • Cloud Consulting
    • UI/UX Design
    • Show more
    Location
    San Jose, California
    Number of Employees
    Under 49
    Portfolios Count
    6 Projects Listed
    View Profile

  • badpixel

    Let's Build Tomorrow Together.

    Let's Build Tomorrow Together.

    We are a brand and software development agency specializing in building eCommerce, iOS, and feature-rich websites and apps that move your business forward...

    Top Services:

    • Product Design
    • eCommerce Development
    • Web Development
    • UI/UX Design
    • Web Design
    • Show more
    Location
    Los Angeles, California
    Number of Employees
    Under 49
    Average Hourly Rate
    $185/hr
    Minimal Budget
    $10,000 - $25,000
    View Profile
    5.0 5.0 (12)

  • The Component Studio

    A boutique web application and website development studio crafting exceptional online experiences.

    A boutique web application and website development studio crafting exceptional online experiences.

    Ready to bring your idea to life? We'll help plan and develop your next full-featured, data-driven web application. With our expertise in React, Next.js, Vue, and TypeScript, we deliver modern solutions that scale...

    Top Services:

    • Mobile App Development
    • Software Development
    • Staff Augmentation
    Location
    San Rafael, California
    Number of Employees
    Under 49
    Average Hourly Rate
    $115/hr
    Minimal Budget
    $10,000 - $25,000
    View Profile

  • Greensighter

    Custom software development firm

    Custom software development firm

    Greensighter is a full-cycle software development studio. We build custom software, AI agents, and MVPs...

    Top Services:

    • Mobile App Development
    • Software Development
    • AI Development
    • Wearables
    • IT Services
    • Show more
    Location
    San Francisco, California
    Number of Employees
    Under 49
    Average Hourly Rate
    $50/hr
    Minimal Budget
    $10,000 - $25,000
    Portfolios Count
    2 Projects Listed
    View Profile

  • Sketch Development Services

    Verified Verified by the DesignRush team for authenticity and credibility.
    Build it. Run it. Own it.

    Build it. Run it. Own it.

    Sketch delivers AI-enabled custom software and DevOps via a subscription model with two-week delivery cycles, citing zero missed deadlines. Its team serves Fortune 500 clients and is best suited for product teams needing a transparent, agile dev partner without long-term contracts...

    Top Services:

    • Software Development
    • Cloud Consulting
    • UI/UX Design
    • eCommerce Development
    • DevOps Consulting
    • Show more
    Location
    San Francisco, California
    Number of Employees
    Under 49
    Minimal Budget
    $50,000 & Up
    View Profile
    4.8 4.8 (8)

  • QUARTE

    WE DESIGN. USERS LOVE. PRODUCTS SUCCEED

    WE DESIGN. USERS LOVE. PRODUCTS SUCCEED

    Founded in 2014, QUARTE is a digital product design agency passionate about designing around and for users. Our experienced product designers, business analysts, and strategists collaborate across diverse domains to deliver impactful, user-focused products...

    Top Services:

    • Product Design
    • UI/UX Design
    • Digital Strategy
    • Software Development
    • Web Design
    • Show more
    Location
    Carmichael, California
    Number of Employees
    Under 49
    Average Hourly Rate
    $50/hr
    Minimal Budget
    $1,000 - $10,000
    Portfolios Count
    1 Project Listed
    View Profile
    5.0 5.0 (2)

  • Opus Logica Inc.

    End-to-End Software Development Solutions

    End-to-End Software Development Solutions

    Opus Logica is a full-stack development partner that turns ideas into scalable products. Weve launched platforms in AI, blockchain, and consumer tech by blending strategy, usability, and growth-minded engineering. From early validation to global scale, our team builds with precision and foresight...

    Top Services:

    • Software Development
    Location
    Santa Barbara, California
    Number of Employees
    Under 49
    Average Hourly Rate
    $180/hr
    Minimal Budget
    $10,000 - $25,000
    View Profile

  • Zypsy

    A design and investment firm for founders.

    A design and investment firm for founders.

    Zypsy is a design and investment firm for founders. We design, build, and engineer the brand, product, and websites that exceptional teams use to earn trust from customers, investors, and talent. We invest in the founders we believe in...

    Top Services:

    • Branding
    • Product Design
    • Web Design
    • UI/UX Design
    • Web Development
    • Show more
    Location
    Covina, California
    Number of Employees
    Under 49
    Portfolios Count
    2 Projects Listed
    View Profile
    5.0 5.0 (7)

  • Pragmica

    Lets Build Something That Matters

    Lets Build Something That Matters

    Pragmica is a boutique design and software studio based between Los Angeles and New York City. We blend brand strategy, product design, and engineering to help ambitious companies launch and scale digital products. Our team of designers, strategists, and developers creates identities, web and mobile apps...

    Top Services:

    • Software Development
    Location
    Los Angeles, California
    Number of Employees
    Under 49
    Average Hourly Rate
    $150/hr
    Minimal Budget
    $1,000 - $10,000
    View Profile

  • Roboto Studio

    The best Next.js & Sanity agency

    The best Next.js & Sanity agency

    Roboto Studio is a Next.js and Sanity agency in San Francisco. We build headless content platforms for companies that have outgrown their CMS, so marketing teams can publish without waiting on a developer. Recent work includes Tray.ai, Topaz Labs and Slingshot Bio...

    Top Services:

    • Web Development
    • Web Design
    • UI/UX Design
    • eCommerce Development
    • AI Development
    • Show more
    Location
    San Francisco, California
    Number of Employees
    Under 49
    Average Hourly Rate
    $200/hr
    Minimal Budget
    $25,000 - $50,000
    Portfolios Count
    8 Projects Listed
    View Profile

  • WebVello

    Design. Develop. Dominate.

    Design. Develop. Dominate.

    A modern digital studio building high-performance websites, SEO systems, and growth platforms for brands that want real results not just visuals...

    Top Services:

    • SEO
    • Web Design
    • Email Marketing
    • Mobile App Development
    • Digital Marketing
    • Show more
    Location
    Roseville, California
    Number of Employees
    Under 49
    Average Hourly Rate
    $55/hr
    Minimal Budget
    $1,000 - $10,000
    View Profile
    5.0 5.0 (14)

  • goodmorning

    Bulld What Matters

    Bulld What Matters

    goodmorning is a Web3 development studio specializing in smart contract development, decentralized application (dApp) development, and blockchain infrastructure engineering. The company helps startups and enterprises design, build, and scale secure blockchain products across Ethereum and major EVM-compatible...

    Top Services:

    • Blockchain
    • Software Development
    • Staff Augmentation
    Location
    San Francisco, California
    Number of Employees
    Under 49
    Average Hourly Rate
    $49/hr
    Portfolios Count
    4 Projects Listed
    View Profile
    5.0 5.0 (8)

  • Paradigm Solutions

    AI-native Engineering. Enterprise-grade Results

    AI-native Engineering. Enterprise-grade Results

    Paradigm provides custom low-code software solutions. Our commitment is to empower organizations with the tools they need to streamline processes, automate tasks, and scale operations efficiently. Through a fusion of expert development and a deep understanding of our clients' unique challenges, we aim to be...

    Top Services:

    • Web Development
    • Mobile App Development
    • Software Development
    • AI Development
    • Show more
    Location
    Temecula, California
    Number of Employees
    Under 49
    Minimal Budget
    $1,000 - $10,000
    View Profile
    5.0 5.0 (1)

  • ITColark Consulting

    Building Smart Enterprise Solutions For Growing Businesses.

    Building Smart Enterprise Solutions For Growing Businesses.

    ITColark Consulting delivers customized enterprise software and IT solutions that help businesses streamline operations, scale efficiently, and achieve digital growth...

    Top Services:

    • Mobile App Development
    • DevOps Consulting
    • IT Services
    • eCommerce Development
    • AI Development
    • Show more
    Location
    California City, California
    Number of Employees
    Under 49
    Average Hourly Rate
    $11/hr
    Minimal Budget
    $10,000 - $25,000
    View Profile

  • Bay Area Coders

    Strategy, design, engineering, and AI

    Strategy, design, engineering, and AI

    Bay Area Coders is a San Francisco-based product and engineering studio working with venture-backed startups and growth-stage companies since 2016. We combine strategy, design, engineering, and AI to help teams ship real products and modernize existing ones...

    Top Services:

    • Software Development
    • Web Development
    • Mobile App Development
    • AI Development
    • Design Services
    • Show more
    Location
    Roseville, California
    Number of Employees
    Under 49
    Average Hourly Rate
    $100/hr
    Minimal Budget
    $1,000 - $10,000
    View Profile

  • LaCleo Inc

    AI Agents That Grow Business

    AI Agents That Grow Business

    AI agents that scale your business developed and operated by LaCleo. LaCleo was established to ensure that scaling businesses get enterprise-grade marketing all at an affordable cost and without having to hire anyone...

    Top Services:

    • Software Development
    • Blockchain
    • eCommerce Development
    • Web Development
    • Show more
    Location
    San Francisco, California
    Number of Employees
    Under 49
    Average Hourly Rate
    $10/hr
    View Profile

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