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Top eCommerce Development Companies in California - November, 2026 | RightFirms

Are you looking for top eCommerce development companies in California?

If you are a business owner and want to develop an eCommerce website, then eCommerce development companies in California will help you with that. These companies have the experience of producing high-quality eCommerce websites. They will help you build your website and guide you through it in terms of functionality, design, performance and other aspects.

To find a trustworthy partner for eCommerce website development, RightFirms has compiled a list of California-based top eCommerce development agencies. Use this list to select companies according to available options like company portfolio, market experience, hourly rate, etc.

How this list is built: This list is prepared using multiple trust and relevance signals, including profile completeness, service expertise, reviews and review freshness, external business signals, and selected signals reviewed by the RightFirms research team. We regularly review these signals and update our listings to help buyers discover credible and relevant partners. Learn more about our methodology

Top eCommerce Development Companies in California | Top eCommerce Developers in California
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Risk-free mobile and web development

4.1★★★★★4.1 / 5
Employees11 to 50
Avg. hourly rate$26 - $50 /hr
Focus AreaE-Commerce Development
LocationUkraine, USA

We are a European software company with headquarters in Estonia and RnD center in Ukraine. Our expertise lies in building mobile and web apps for startups from Western Europe and the USA. We design, develop, and test our apps internally. This way we can always be sure about the quality of the end product.Read More About Riseapps

Software development surpassing expectations

4.0★★★★★4.0 / 5
Employees11 to 50
Avg. hourly rate$51 - $100 /hr
Focus AreaE-Commerce Development
LocationUSA

We are a dynamic group of tech enthusiasts and dedicated technical solution providers. We thrive on the excitement of innovation and the pursuit of excellence. Our mission is to cater to individuals and businesses who are in search of a reliable tech partner to lead and grow with.Read More About Gurzu

AI-Native Enterprise Software Engineering

3.9★★★★★3.9 / 5
Employees251 to 1000
Avg. hourly rate$51 - $100 /hr
Focus AreaE-Commerce Development
LocationUSA, Poland

Zoolatech is an enterprise software engineering company delivering platform modernization, cloud, data and AI solutions through teams led by senior engineers. We help enterprise and upper mid-market companies modernize legacy platforms, build and scale digital products, and migrate to the cloud.Read More About Zoolatech

We add creativity to your imagination

3.9★★★★★3.9 / 5
Employees2 to 10
Avg. hourly rate< $25 /hr
Focus AreaE-Commerce Development
LocationIndia

Neptastic Creative Hub is a Noida-based digital agency specializing in website and mobile app development, creative branding, and printing solutions. We blend technology with design to deliver impactful solutions for startups and established businesses. From custom web apps to engaging brand identities, we ensure innovation, quality, and results that help businesses grow and stand out in a competitive market.Read More About Neptastic Creative Hub

Innovation Starts with us. We make ideas happen!

3.9★★★★★3.9 / 5
Employees11 to 50
Avg. hourly rate$101 - $150 /hr
Focus AreaE-Commerce Development
LocationUSA

Creation Next is an innovative IT web application development and consulting company. CN specializes in ColdFusion Web and Mobile Development, Blockchain and metaverse engineering, Modernizing Legacy Applications, microservices development, Data Scraping, Managed Cloud Services, and much more in education, energy, real estate, healthcare.Read More About Creation Next

Transforming Tech Heritage into Your Future Success

3.9★★★★★3.9 / 5
Employees51 to 250
Avg. hourly rate$26 - $50 /hr
Focus AreaE-Commerce Development
LocationUSA, Ukraine

At ModLogix, a legacy software modernization company, we focused on upgrading legacy technologies, including AngularJS and .NET. We offer our clients to move desktop solutions to the web, migrate to the cloud, re-engineer or re-architect legacy software, and insert APIs.Read More About ModLogix

Solving Complex Problems of the World through AI

3.9★★★★★3.9 / 5
Employees11 to 50
Avg. hourly rate< $25 /hr
Focus AreaE-Commerce Development
LocationUSA

Ezapp is the team of Top Developers that work on different technology stacks ranging from Enterprise Web Applications, Mobile Aps, AI/ML, AI Analytics, Business Intelligence, DevOps, or UI/UX Development needs. We serve Startups and SMEs to global brands from all across the world.Read More About Ezappsolution

Premium design, video, web development, conversion optimizat

3.7★★★★★3.7 / 5
Employees11 to 50
Avg. hourly rate$151 - $200 /hr
Focus AreaE-Commerce Development
LocationUK, USA

Passionate Agency provides premium design, web development, conversion optimization and AI solutions for growing and enterprise businesses. Our senior team covers branding, UI/UX, WordPress, Webflow, Shopify, CRO, UX research, video and motion design, AI agents and automation. We offer flexible on-demand support, dedicated project management and rapid 1–3 working day turnaround.Read More About Passionate

Perfection Delivered

3.6★★★★★3.6 / 5
Employees51 to 250
Avg. hourly rate< $25 /hr
Focus AreaE-Commerce Development
LocationIndia, USA

Xtreem Solution builds Web & Mobile solutions that are in harmony with industry requirements and budget. Applying the know-how of advanced technologies, we work to augment the growth of startups, small business, and enterprises. Our team keeps pace with the latest technology trends like Artificial Intelligence, IoT, Big Data, AR and VR.Read More About Xtreem Solution

Data, AI & custom software teams for complex products

3.5★★★★★3.5 / 5
Employees51 to 250
Avg. hourly rate$26 - $50 /hr
Focus AreaE-Commerce Development
LocationUK, USA

Timspark is a UK-headquartered software development company helping startups, SMBs, and enterprises solve complex technology challenges through custom software development, AI, cloud solutions, and dedicated engineering expertise.Read More About Timspark

Top Web & Mobile App Development Company Worldwide

3.5★★★★★3.5 / 5
Employees11 to 50
Avg. hourly rate$26 - $50 /hr
Focus AreaE-Commerce Development
LocationPakistan, USA

Zactra Technologies Inc. is a team of experienced developers, designers, and technology consultants delivering high-quality web, mobile, AI, cloud, and enterprise software solutions for startups and established businesses across the globe.Read More About Zactra Technologies Inc.

FocusReactive
RightFirms reviewed this company’s profile, work, reviews, clientele, and public trust signals.

We build Composable Content Systems. Fast and Scalable.

5.0★★★★★5.0 / 5(24 reviews)
Employees11 to 50
Avg. hourly rate$51 - $100 /hr
Focus AreaE-Commerce Development
LocationUK, Poland

FocusReactive is an engineering-led headless CMS, eCommerce, and Next.js development agency. As an official partner of Sanity, Storyblok, Contentful, and Payload CMS, we build and migrate composable, vendor-agnostic content systems — always selecting the platform that fits the project, not the one we default to.Read More About FocusReactive

5.0Reviewed 1 week ago

“We were very happy with the results and will use FocusReactive in the future.”

Antonio Kaleb, Director of E-Commerce, LARQ

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