Best California eCommerce App Development Companies

324 Companies - Rankings updated: April 07, 2026

We evaluate every agency on DesignRush according to expertise credentials and client satisfaction ratings. Some placements are sponsored.

United States × California ×
  • We Deliver AI-Powered Products and Platforms Your Team and Customers Will Love.

    We Deliver AI-Powered Products and Platforms Your Team and Customers Will Love.

    The landscape of this industry has been radically transformed in recent years. It has veered from the traditional practice of relying on generalists towards an increasingly specialized approach to strategy and deployment. It's time to work with the experts and reach new heights.  [... view SPARK6 profile ]
    Location
    Los Alamitos, California
    Number of Employees
    Under 49
    Average Hourly Rate
    $99/hr
    Minimal Budget
    $1,000 - $10,000
  • Your end-to-end digital product development team

    Your end-to-end digital product development team

    Baymediasoft is a pioneering web and mobile app development firm that bridges India and the United States with its unique global reach. Its passionate team of experts provides comprehensive IT solutions to an extensive range of industries around the globe, helping them stay ahead in their respective fields.  [... view Baymediasoft Technologies profile ]
    Location
    Los Angeles, California
    Number of Employees
    100 - 249
    Average Hourly Rate
    $49/hr
    Minimal Budget
    $1,000 - $10,000
  • Grow Your Web Presence

    Grow Your Web Presence

    In what has proven to be the best decision of my life, I took the summer of 2012 off to ride my bike across the country to raise money and awareness for affordable housing.  [... view Kegan Quimby profile ]
    Location
    San Francisco, California
    Number of Employees
    Under 49
    Average Hourly Rate
    $150/hr
    Minimal Budget
    $1,000 - $10,000
  • Shopify design, development and marketing agency.

    Shopify design, development and marketing agency.

    Digital commerce agency Coderapper focuses on growth and has locations in the US, Canada, and India. For meaningful customer experiences, we combine data-driven design, specialized development, and targeted growth strategy.  [... view Coderapper profile ]
    Location
    Sunnyvale, California
    Number of Employees
    Under 49
    Average Hourly Rate
    $99/hr
    Minimal Budget
    $25,000 - $50,000
  • We Help Small Businesses Succeed Online

    We Help Small Businesses Succeed Online

    We are Portalone Team, a fully-independent digital agency. We cover all part of your company, empowering your brand with the greatest creative and technical talent, industry-leading client service, and quantifiable outcomes. Results that exceed your own expectations, the competitors, and the market. There  [... view PortalOne Team profile ]
    Location
    San Diego, California
    Number of Employees
    Under 49
    Average Hourly Rate
    $30/hr
    Minimal Budget
    $1,000 - $10,000
  • Desig & Develop Top-Notch Digital Products

    Desig & Develop Top-Notch Digital Products

    We are trusted by businesses of all sizes to design and develop their digital products.  [... view ArcTouch profile ]
    Location
    San Francisco, California
    Number of Employees
    100 - 249
    Average Hourly Rate
    $149/hr
    Minimal Budget
    $50,000 & Up
  • Railsware - A software development agency

    Railsware - A software development agency

    We're a software development agency that builds products that scale. Our engineering-first culture and product-minded approach have powered success stories like Calendlythe scheduling platform that revolutionized meetings for millions.  [... view Railsware profile ]
    Location
    West Hollywood, California
    Number of Employees
    100 - 249
    Average Hourly Rate
    $149/hr
    Minimal Budget
    $50,000 & Up
  • Lanex Corporation - Tailor-made solutions for your business needs

    Lanex Corporation - Tailor-made solutions for your business needs

    Here at Lanex Corporation, we are a full-cycle software development service provider specializing in bespoke digital solutions for startups and companies globally. We build scalable and secure products designed to impact your brand and provide the best digital experience for your users.  [... view Lanex Corporation profile ]
    Location
    San Francisco, California
    Number of Employees
    100 - 249
    Average Hourly Rate
    $49/hr
    Minimal Budget
    $25,000 - $50,000
  • A company specializing in design and development

    A company specializing in design and development

    King Tide is a design and development firm based in Los Angeles, CA. Our team is focused on delivering innovative solutions for brands and consumers. We have a passion for branding, design, technology, and impacting customer experiences through real-world brand and product development.  [... view King Tide profile ]
    Location
    West Hollywood, California
    Number of Employees
    100 - 249
    Average Hourly Rate
    $149/hr
    Minimal Budget
    $10,000 - $25,000
  • Beautiful Products That Connect People

    Beautiful Products That Connect People

    Tesuji is a dynamic team of software design and development experts committed to bringing IT products to life, from augmented reality pet games to social platforms for live streaming. As a creative engineering and design agency, Tesuji prioritizes pragmatic construction, employing proven yet modern  [... view Tesuji profile ]
    Location
    Nevada City, California
    Number of Employees
    Under 49
    Average Hourly Rate
    $149/hr
    Minimal Budget
    $25,000 - $50,000
  • Dream.Design.Develop

    Dream.Design.Develop

    Wonderment is a distinguished software development and tech staffing agency headquartered in California. We cater to teams of all sizes, ranging from startups to large-scale technology projects, by working across various web technology platforms and languages. The core team at Wonderment Apps has an  [... view Wonderment Apps profile ]
    Location
    Los Angeles, California
    Number of Employees
    100 - 249
    Average Hourly Rate
    $99/hr
    Minimal Budget
    $1,000 - $10,000
  • Innovative Mobile Application Development

    Innovative Mobile Application Development

    Our goal is to create software applications with the best code and product quality imaginable, exceeding all standards.  [... view Sileria profile ]
    Location
    Los Angeles, California
    Number of Employees
    Under 49
    Average Hourly Rate
    $149/hr
    Minimal Budget
    $50,000 & Up
  • We Build Innovative Multiplatform Flutter Apps for the Digital World

    We Build Innovative Multiplatform Flutter Apps for the Digital World

    We provide our clients with infinite scaling and very quick feature delivery times.  [... view Morning Stars Developers profile ]
    Location
    Inglewood, California
    Number of Employees
    Under 49
    Average Hourly Rate
    $99/hr
    Minimal Budget
    $50,000 & Up
  • Developing and integrating eCommerce apps

    Developing and integrating eCommerce apps

    Since 2012, Attractor Software LLC has offered Custom Software Development as an outsourcing service for projects of varying complexity and size.  [... view Attractor Software profile ]
    Location
    Los Angeles, California
    Number of Employees
    Under 49
    Average Hourly Rate
    $49/hr
    Minimal Budget
    $10,000 - $25,000
  • Startup Launcher

    Startup Launcher

    We are empowering businesses and individuals to adopt technology solutions that create lasting and progressive impacts on people's lives.  [... view Doota profile ]
    Location
    Mountain View, California
    Number of Employees
    Under 49
    Average Hourly Rate
    $25/hr
    Minimal Budget
    $1,000 - $10,000
  • Specializing in React, Javascript and more!

    Specializing in React, Javascript and more!

    Novvum is a software design and development studio that specializes in solving complex technical and creative challenges. We are a team of computer scientists, full-stack web developers, UX/UI designers, and senior project managers who are dedicated to delivering high-quality software applications and  [... view NOVVUM profile ]
    Location
    Irvine, California
    Number of Employees
    100 - 249
    Average Hourly Rate
    $149/hr
    Minimal Budget
    $10,000 - $25,000
  • We Build Startups

    We Build Startups

    E8 Labs goes beyond the typical agency role by providing founders and startups with a distinctive approach to reaching product market fit at an accelerated pace. In addition to developing an MVP, we also prioritize scalability for subsequent versions.  [... view E8 Labs profile ]
    Location
    San Jose, California
    Number of Employees
    Under 49
    Average Hourly Rate
    $199/hr
    Minimal Budget
    $25,000 - $50,000
  • Strong Solutions for Industry Leaders.

    Strong Solutions for Industry Leaders.

    Yeti is a San Francisco-based product development and design firm that partners with industry leaders to stay ahead of the competition. Our agile approach enables us to research, prototype, and test products fast and frequently, avoiding potential snags in the development process. We work closely with our  [... view Yeti profile ]
    Location
    Truckee, California
    Number of Employees
    Under 49
    Average Hourly Rate
    $199/hr
    Minimal Budget
    $25,000 - $50,000
  • Efficient Solutions for a Better Business

    Efficient Solutions for a Better Business

    Agilistry is a leading software development company that utilizes the latest development methodologies, tech and industry best practices to deliver world-class mobile applications with embedded quality and DevOps infrastructure on time and within budget.  [... view Agilistry profile ]
    Location
    Los Angeles, California
    Number of Employees
    100 - 249
    Average Hourly Rate
    $49/hr
    Minimal Budget
    $10,000 - $25,000
  • Skyrocket Your Business With eCommerce Development.

    Skyrocket Your Business With eCommerce Development.

    End-to-end eCommerce website development and infrastructure solutions for B2B, B2C, and D2C proven by our 1000+ happy clients in 170 countries.  [... view Simtech Development profile ]
    Location
    San Diego, California
    Number of Employees
    250 - 499
    Average Hourly Rate
    $40/hr
    Minimal Budget
    $1,000 - $10,000
  • Crafting Online Success Stories, One Pixel At A Time

    Crafting Online Success Stories, One Pixel At A Time

    We take great pride in our work, showcasing resourcefulness and a keen ability to address nuanced challenges. We adeptly tackle issues as they arise, continuously refining our systems to optimize outcomes for our esteemed clients. With extensive experience in remote work environments, we have forged an  [... view SMV EXPERTS LLC profile ]
    Location
    San Marcos, California
    Number of Employees
    Under 49
    Average Hourly Rate
    $70/hr
    Minimal Budget
    $10,000 - $25,000
  • Design that takes your business to the next level.

    Design that takes your business to the next level.

    We are Studio Alpeto, a team of web designers, graphic designers, and software engineers! Were on a mission to deliver the best possible design & development solutions for your business needs.  [... view Studio Alpeto profile ]
    Location
    Beverly Hills, California
    Number of Employees
    Under 49
  • Craft experiences that touch hearts and move markets

    Craft experiences that touch hearts and move markets

    Frog (part of CapgeminiInvent) is a global creative and design consultancy founded in 1969 and headquartered in San Francisco. With over 2,000 employees and studios in North America, Europe, and Asia, Frog fuses strategy, design, data and technology to reimagine products, services and businesses. The firm  [... view Frog profile ]
    Location
    San Francisco, California
    Number of Employees
    1000 & Up
  • AI Power Agency and Development Shop.

    AI Power Agency and Development Shop.

    Easiio build AI tools called ChatAI. We help our customers with these tools and implemented Large Language Model base AI technologies for their website or business software. Helping our customers do more with less and improve their efficiency. Our rate is very competitive with the help of AI and quality of  [... view Easiio profile ]
    Location
    Santa Clara, California
    Number of Employees
    50 - 99
    Average Hourly Rate
    $30/hr
    Minimal Budget
    $1,000 - $10,000
  • Bringing Digital Strategy, UX & Development Together.

    Bringing Digital Strategy, UX & Development Together.

    Our focus is on combining digital strategy, UX design and technological development to help individuals and organizations' grow in a connected world.  [... view Affinity Design Hub profile ]
    Location
    San Diego, California
    Number of Employees
    Under 49
  • Your Marketplace in a Month.

    Your Marketplace in a Month.

    At Start Mobile, we create innovative online marketplaces featuring mobile apps and AI-powered by ChatGPT. Our unique approach ensures each platform is tailored to meet specific business needs, enhancing user experience and functionality. Partner with us to leverage cutting-edge technology and transform your  [... view Start Mobile profile ]
    Location
    Los Angeles, California
    Number of Employees
    Under 49
    Average Hourly Rate
    $35/hr
    Minimal Budget
    $1,000 - $10,000
  • Boost Your Company to The Next Level

    Boost Your Company to The Next Level

    We pursue relationships based on transparency, persistence, mutual trust, and integrity with our employees, customers and other business partners.  [... view Boost Media Group profile ]
    Location
    Folsom, California
    Number of Employees
    Under 49
  • Bluezoo Web Is Your Digital Partner for Success.

    Bluezoo Web Is Your Digital Partner for Success.

    BlueZoo Web is your digital partner for success. With our expertise in Web Design, SEO, Digital Marketing, and more, we'll help your business make a splash online and stand out from the competition. Let us guide you through the digital landscape and elevate your online presence to new heights.  [... view BlueZooWeb profile ]
    Location
    San Ramon, California
    Number of Employees
    50 - 99
    Average Hourly Rate
    $25/hr
    Minimal Budget
    Under $1,000
  • Design Driven Technology Innovations

    Design Driven Technology Innovations

    As a leading digital transformation services company, we harness the potential of Artificial Intelligence, Cloud, IoT, Robotics, Data Analytics, and other Emerging Technologies. As the best IT solutions services agency, we are a global technology provider who assists businesses to accelerate their digital  [... view Terralogic profile ]
    Location
    San Jose, California
    Number of Employees
    Under 49
  • USA's Top-Ranked Logo Design Agency

    USA's Top-Ranked Logo Design Agency

    California Logo Designs is a renowned logo design agency based in Irvine, California, USA. The agency specializes in helping brands enhance their online presence through captivating branding strategies, earning trust and recognition worldwide.  [... view California Logo Designs profile ]
    Location
    Irvine, California
    Number of Employees
    100 - 249
    Average Hourly Rate
    $100/hr
  • Designing More Human Experiences.

    Designing More Human Experiences.

    We are Lab 201, a multidisciplinary team of trouble-makers and problem-solvers working together to design, engineer, build, and test the future.  [... view Lab 201 LLC profile ]
    Location
    Los Gatos, California
    Number of Employees
    Under 49
  • Building Websites, Crafting Apps, Empowering Your Digital Future.

    Building Websites, Crafting Apps, Empowering Your Digital Future.

    We specialize in creating custom websites and applications that drive innovation and enhance user experiences. From sleek, responsive designs to powerful, user-friendly apps, we bring your digital vision to life with precision and creativity.  [... view FZHP Global Vision profile ]
    Location
    Ontario, California
    Number of Employees
    50 - 99
    Average Hourly Rate
    $85/hr
    Minimal Budget
    Under $1,000
  • Fast and efficient Nocode & AI Apps.

    Fast and efficient Nocode & AI Apps.

    Codi Technologies helps businesses build applications efficiently by providing nearshore design and development services. We leverage low code tools, top tier designers & developers skilled in frontend and backend, integrations, and UX/UI to deploy ideas quickly.  [... view Codi Technologies profile ]
    Location
    Los Angeles, California
    Number of Employees
    Under 49
    Average Hourly Rate
    $125/hr
    Minimal Budget
    $1,000 - $10,000
  • Powering Your Digital Titan!

    Powering Your Digital Titan!

    Transforming Ideas Into Cutting-Edge Websites!Titan Web Studios specializes in Web Design & Development, UI/UX Design, Mobile App Development, Search Engine Optimization (SEO), Social Media Marketing and Branding. Providing the Best Digital Services across the Nation to Elevate your Business.  [... view Titan Web Studios profile ]
    Location
    Oakland, California
    Number of Employees
    100 - 249
    Average Hourly Rate
    $45/hr
    Minimal Budget
    $1,000 - $10,000
  • Your Vision, Our Innovation Together, We Build the Future.

    Your Vision, Our Innovation Together, We Build the Future.

    RSunBeat Software is a globally trusted leader in mobile app development, serving businesses in the USA, UK, Australia, Italy, Dubai, Brazil, and more. We design innovative, high-quality apps that boost growth, elevate user experiences, and turn ideas into powerful digital solutions.  [... view RSunBeat Software profile ]
    Location
    California City, California
    Number of Employees
    Under 49
    Average Hourly Rate
    $15/hr
    Minimal Budget
    $1,000 - $10,000
  • Tap Built, located in California, creates innovative mobile apps and engaging games for entrepreneur

    Tap Built, located in California, creates innovative mobile apps and engaging games for entrepreneur

    Tap Built Located in California creates innovative mobile apps and engaging games for entrepreneurs startups and business worldwide.  [... view Tap Built profile ]
    Location
    West Covina, California
    Number of Employees
    50 - 99
    Average Hourly Rate
    $100/hr
    Minimal Budget
    $1,000 - $10,000
  • Your Full Digital Development Experience.

    Your Full Digital Development Experience.

    Phoenix Afterglow is a premier multimedia company specializing in web development, app development, online marketing, and cybersecurity. They are dedicated to upholding the highest standards of performance, integrity, and ethics to ensure client satisfaction and achieve a lasting sense of fulfillment for all  [... view Phoenix Afterglow profile ]
    Location
    Irvine, California
    Number of Employees
    Under 49
    Average Hourly Rate
    $50/hr
    Minimal Budget
    $1,000 - $10,000
  • We Turn Your Vision Into Reality

    We Turn Your Vision Into Reality

    Helping U.S. businesses grow online since 2022, we provide affordable custom web design and SEO services that deliver measurable results.  [... view Own Web Solutions profile ]
    Location
    Ontario, California
    Number of Employees
    Under 49
    Average Hourly Rate
    $20/hr
    Minimal Budget
    Under $1,000
  • Affordable & Premium Web Development Company

    Affordable & Premium Web Development Company

    Royce Web Solutions is a full service digital agency specializing in custom websites, e-commerce stores, SaaS platforms, and AI-Powered web and mobile apps. We help startups and businesses turn ideas into fast, scalable and user-friendly digital products.  [... view Royce Web Solutions profile ]
    Location
    Mountain View, California
    Number of Employees
    Under 49
    Average Hourly Rate
    $35/hr
    Minimal Budget
    $1,000 - $10,000
  • Redesigning and Modernizing Software and Applications.

    Redesigning and Modernizing Software and Applications.

    Iteration Group is a boutique product-strategy and user-experience consultancy founded in 2011. The agency partners with startups, well-capitalized ventures, consumer brands, and enterprises to deliver purposeful product design from UX/UI strategy and wireframes to functional prototypes and scalable app  [... view Iteration Group profile ]
    Location
    Westlake Village, California
    Number of Employees
    Under 49
  • Tech Company That Provides App Solutions

    Tech Company That Provides App Solutions

    At Appsters, innovation and reliability are at the core of everything we do. We dont just build apps; we build digital experiences that empower brands to thrive in todays competitive market. As a digital tech company we offer innovative mobile app solutions to every type of business & industry. Give your  [... view Appsters profile ]
    Location
    San Jose, California
    Number of Employees
    250 - 499
    Average Hourly Rate
    $250/hr
    Minimal Budget
    $25,000 - $50,000
  • Let Us Be Your Creative Partner

    Let Us Be Your Creative Partner

    Code 9 Web Studios is a leading website design and development company and a top-tier IT solutions provider based in Dover, USA.  [... view Code 9 Web Studios profile ]
    Location
    Los Angeles, California
    Number of Employees
    100 - 249
    Average Hourly Rate
    $25/hr
    Minimal Budget
    $1,000 - $10,000
  • Empower Your Business through Transformative IT Services.

    Empower Your Business through Transformative IT Services.

    United Techno is a global IT-services and consulting firm offering data management & AI solutions, application modernization, cloud & legacy-system modernization, integration, QA/testing, and digital transformation helping businesses across retail, logistics, life sciences, e-commerce and other sectors  [... view United Techno profile ]
    Location
    Pleasanton, California
    Number of Employees
    250 - 499
  • Elite Services That Multiply Revenue

    Elite Services That Multiply Revenue

    SEOFAT is a full-service digital agency offering SEO, web development, and marketing solutions. We help brands grow visibility, leads, and revenue through smart, data-driven strategies.  [... view SEOFAT profile ]
    Location
    Irvine, California
    Number of Employees
    100 - 249
    Average Hourly Rate
    $25/hr
    Minimal Budget
    $1,000 - $10,000
  • Proven Excellence Through Custom Web Design and Development Services.

    Proven Excellence Through Custom Web Design and Development Services.

    Allusive Digital is a creative and marketing agency that helps businesses grow through branding, web design, content development, and digital marketing. The agency blends thoughtful strategy with polished creative execution to help clients increase visibility, strengthen their identity, and connect with their  [... view Allusive Digital profile ]
    Location
    Los Angeles, California
    Number of Employees
    Under 49
  • Where Innovation Meets Excellence

    Where Innovation Meets Excellence

    Web Design Avenue helps businesses build distinctive corporate identity design through full-service brand identity and visual system development. They craft consistent branding elements from logos to collateral that strengthen recognition and reflect each clients unique personality.  [... view Web Design Avenue profile ]
    Location
    Los Angeles, California
    Number of Employees
    100 - 249
  • Reimagining Software Development

    Reimagining Software Development

    Beehive is a new production model for software development (the world's first we should add) that fuses AI precision with human ingenuity. A model of collective intelligence that breaks projects into microtasks, routing them to global experts, and delivering production-ready, high quality, code faster than  [... view Beehive Software profile ]
    Location
    San Jose, California
    Number of Employees
    100 - 249
    Minimal Budget
    $10,000 - $25,000
  • Empowering Your Business Growth With Precision

    Empowering Your Business Growth With Precision

    Staydify Growth Systems is a division of the UK-based HiringBooster Group, focused on driving technology-enabled business growth. The company specializes in delivering advanced custom software development and precision IT staffing services, leveraging its global footprint across the UK, USA, India, and other  [... view Staydify Systems profile ]
    Location
    San Francisco, California
    Number of Employees
    100 - 249
    Average Hourly Rate
    $10/hr
    Minimal Budget
    Under $1,000
  • Thinking Outside The Box

    Thinking Outside The Box

    City of Trees Tech is a Sacramento-based technology firm helping businesses build smarter, stronger digital foundations. We specialize in custom websites, web and mobile apps, CRM solutions, automation, and digital marketing designed to improve efficiency, visibility, and growth. Backed by a global team of  [... view City Of Trees Tech profile ]
    Location
    Sacramento, California
    Number of Employees
    Under 49
    Minimal Budget
    $1,000 - $10,000
  • 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.  [... view WebVello profile ]
    Location
    Roseville, California
    Number of Employees
    Under 49
    Average Hourly Rate
    $55/hr
    Minimal Budget
    $1,000 - $10,000

About The Author and Expert Reviewer

Selina Garcia has authored 500+ articles and edited 50+ published books in economics, law, and history. Her unique blend of experiences allows her to approach content creation from a well-rounded perspective. Currently, Selina applies her expertise to producing insightful articles on IT, software, and applications for DesignRush.

Former Development Director

Sergio is a technology leader with over six years of experience managing global teams and delivering projects across fintech, sportstech, and B2B platforms. At DesignRush, he drove product growth and development execution, building tools that speed up processes by 95% and cut costs by 35% while maintaining full uptime.