Our expert analysts have ranked the best eCommerce development companies in California that build intuitive online stores to help you turn visitors into paying customers. Filter them by portfolios, budget, client reviews, industry reputation and more to find the right fit for your brand.
Best California eCommerce Development Agency Rankings
12 Companies-Rankings updated: September 05, 2026
Every agency on DesignRush meets evaluation criteria around expertise and client feedback to empower informed choices. Some listings include paid partnerships.
VerifiedVerified by the DesignRush team for authenticity and credibility.
Your trusted AI software development partner
Diffco builds Magento and Shopify web stores for retail and eCommerce clients, including grocery delivery platform Food Rocket, from its Silicon Valley base. The 2008-founded eCommerce company also specializes in AI and custom software development, having delivered 1,150+ projects overall...
Top Services:
AI Development
Software Development
Staff Augmentation
Mobile App Development
Web Development
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Location
San Jose, California
Number of Employees
50 - 99
Average Hourly Rate
$110/hr
Minimal Budget
$25,000 - $50,000
Portfolios Count
31 Projects Listed
Diffco Services
AI Development
Software Development
Staff Augmentation
Mobile App Development
Web Development
eCommerce Development
IoT
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
Mars
Food Rocket
FlashGrid
Nokia
Instreamatic
Quire
Legionfarm
Latoken
Genius One
Shift
Data sourced from the agency's DesignRush profile
Diffco Reviews & Testimonials
Oleg Sotnikov
CEO at AppMaster
5.0★
AI Development Review from Oleg Sotnikov
Diffco built a complex, production-grade AI agentic system and backend for our client's fintech platform owning architecture, AI/ML components, and AI agents in a security- and compliance-sensitive environment. They delivered on time and within budget, communicated proactively, and operated like part of our own team, taking ownership and suggesting better solutions throughout. Deep AI/ML and senior backend expertise. We'd happily work with them again.
Julia Platova
VP Strategic Partnerships at OVA Solutions
5.0★
Mobile App Development Review from Julia Platova
We partnered with Diffco for a comprehensive software development project aimed at delivering a mobile application and backend system for our client.
The goal was to create a seamless, secure, and scalable solution within a 4-month timeline and $50k-$200k budget.
Diffcos team was highly professional from start to finish. They handled everything: UI/UX design, backend architecture, API integration, and deployment.
After the launch, they continued to support us with maintenance and performance optimization.
The application received positive feedback and has proven stable and scalable.
Were highly satisfied with Diffcos expertise, commitment, and ability to deliver real results.
Max Shmatkov
Manager at Centerligh
5.0★
Mobile App Development Review from Max Shmatkov
As an advantage of working with this company I’d like to note that their Agile development method is amazing! Diffco earned my trust through such approach and the team’s professional attitude.
Reviews verified by DesignRush and sourced from the agency's profile
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Closeloop Technologies provides solutions for eCommerce Development that elevate online retail through tailored digital experiences. Our proven strategies drive excellence in every custom software and UI/UX design project we handle, ensuring seamless integrations and scalable growth for your business...
Top Services:
Software Development
Web Design
Mobile App Development
AI Development
Wearables
Show more
Location
Mountain View, California
Number of Employees
100 - 249
Average Hourly Rate
$25/hr
Minimal Budget
$25,000 - $50,000
Portfolios Count
31 Projects Listed
Closeloop Technologies Services
Software Development
Web Design
Mobile App Development
AI Development
Wearables
Web Development
eCommerce Development
CRM Consulting
Cloud Consulting
ERP Consulting
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
Pacefunding
Cordance
Premier Talent Partners
Omnidian
Datacube.ai
HomeRun Financing
BioStem Technologies
UTR Sports
AJNA
Block & Tam
Data sourced from the agency's DesignRush profile
Closeloop Technologies Reviews & Testimonials
Rick Tomsic
Founder and Chief Executive Officer at Tradovate, LLC
5.0★
Software Development Review from Rick Tomsic
Global business segment growth is requiring technology to keep up with the increase. Our platform is designed to be scalable and able to be implemented across several nations. We collaborated with Closeloop Technologies to work with our staff in order to scale up the programme.
An whole agile team is provided by Closeloop Technologies to participate in our programme. At first, we gave them the data in hopes that they would aid in our execution. They have combined Spring Boot, JavaScript, and AWS cloud technologies.
The platform is a value stream and full-suite insurance lifecycle. It is an internal iterative software programme.
Working with Closeloop Technologies is simple. They pick up new roles rapidly and possess agile team abilities that are industry standard. The staff not only fits right in, but they also contribute their knowledge and perspectives, making them a vital component of the programme.
Henrique Dubugras
Founder and Co-CEO at Brex
5.0★
Software Development Review from Henrique Dubugras
Services that had been slow or unavailable for weeks had to be brought back up. We must bring back our vital business role. After learning about our issue, the Closeloop project manager assigned a senior database specialist to address it. Our main programmer had a direct conversation with the database specialist of Closeloop after they listened to our problem and asked some follow-up questions. Within less than two hours, the solution to our issue had been verified and implemented.
Bill Rogers
Chairman and CEO at Truist
5.0★
Software Development Review from Bill Rogers
We occasionally utilize outsourced resources to increase our team's ability to satisfy the commercial demands of our clients. This time, my goal was to create and enhance the products we were providing to clients. Their engineers joined our own team to work on the project, creating MetaTrader-based software for our traders. They assisted us in creating and refining a suite of services that give our clients more functionality; up until that point, the solution had been erratic and unconventional. Their most recent endeavor was the development of an income trading module. We employed a scrum methodology with sprint deliverables and agile planning. Along with narrative points, we also used our in-house bug tracking application for project and task management. Everything was really accurate.
Reviews verified by DesignRush and sourced from the agency's profile
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Simform is a premier digital engineering company specializing in Product Engineering, Cloud, Data, Agentic AI, and Enterprise Platform Innovation. We help enterprises and high-growth ISVs build digital experiences and scalable, enterprise-grade products what work at scale...
Top Services:
Software Development
Cloud Consulting
AI Development
Big Data Analytics
DevOps Consulting
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Location
Los Angeles, California
Number of Employees
1000 & Up
Average Hourly Rate
$30/hr
Minimal Budget
$25,000 - $50,000
Portfolios Count
8 Projects Listed
Simform Services
Software Development
Cloud Consulting
AI Development
Big Data Analytics
DevOps Consulting
IoT
eCommerce Development
UI/UX Design
IT Services
Managed Services
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
Sony Music (EMI)
Pepsico
Zep Inc
Intralinks
Nxt-ID
FreeWire Inc
Accent Inc
Mission Rabies
DoggyBnB
Drizzle Labs
Data sourced from the agency's DesignRush profile
Simform Reviews & Testimonials
Andrew Muroff
CEO at Strainprint Technologies Ltd.
5.0★
Software Development Review from Andrew Muroff
We worked with Simform for many years ongoing software development on our core product, the Strainprint mobile outcomes tracker for medical cannabis patients. We have only positive things to say about their work product and attention to detail. We highly recommend them and will work with them again.
Robel Yemane
Head of Engineering at Privilee
5.0★
Software Development Review from Robel Yemane
I've been working with Simform for over six months now. The engagement began with bringing our subscription management platform in-house, and we've since expanded the partnership to other projects due to their broad skill set and consistent reliability. They've gone the extra mileeven over weekends and public holidaysto help us move faster when needed. Communication and project management have been excellent, with any issues swiftly addressed. It genuinely felt like Simform was invested in our success. Having worked with similar firms throughout my career, I can confidently say Simform stands out and comes highly recommended.
Russ Makhauri
Front-End Engineer at Midas
5.0★
Software Development Review from Russ Makhauri
We worked with Simform to hire a front-end engineer for our SaaS platform. The process was well-organized, and their team was professional, responsive, and efficient. They quickly identified a candidate who met our technical requirements and ensured a smooth onboarding process.
Simforms communication and project management were strong throughout the engagement. They were proactive in addressing feedback and remained flexible in adapting to our needs. While there is some room for improvement in developer vetting and quality assurance, their overall service was excellent.
For companies looking to scale their development teams efficiently, Simform is a reliable partner. Their structured approach, responsiveness, and commitment to client satisfaction make them a great choice. We would recommend them without hesitation.
Reviews verified by DesignRush and sourced from the agency's profile
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Clear your backlog and ship products you're proud of faster with our nearshore software development resources. We provides highly skilled, team-based resources to companies that need tech talent fast...
Top Services:
Mobile App Development
Software Development
Staff Augmentation
Web Development
eCommerce Development
Show more
Location
San Francisco, California
Number of Employees
Under 49
Average Hourly Rate
$70/hr
Minimal Budget
$25,000 - $50,000
Portfolios Count
8 Projects Listed
Admios Services
Mobile App Development
Software Development
Staff Augmentation
Web Development
eCommerce Development
Software Testing
IT Compliance Solution
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
Converse
Anaplan
Zignal Labs
Contract Pod AI
Collective Health
Terraformation
Conductor
Shop Ware
Symphony
Off the Grid
Data sourced from the agency's DesignRush profile
Admios Reviews & Testimonials
Will McDonald
VP Product at Conductor
5.0★
Web Development Review from Will McDonald
I was able to dictate requirements at a high level without having to deal with the details. The Admios team was able to make technical level decisions on their own. They were a first class partner of the team.
Mark Griffin
Director of Engineering at Latent AI
4.8★
Software Development Review from Mark Griffin
Due to past experiences, Latent AI is always cautious when hiring external engineering resources for a project. But collaborating with Admios is a breath of fresh air. The agencys account manager is nothing short of professional, attentive, and understanding of client needs. Furthermore, Admios seasoned and self-sufficient engineers fit seamlessly into the Latent AI culture. The team treats and trusts them as one of their own. (Verified via email)
Matt Attaway
VP, Software Engineering at Off the Grid
4.7★
Mobile App Development Review from Matt Attaway
Off the Grid has had a longstanding developer partnership with Admios. Recently, the client trusted Admios with building a complex React Native POS system and a guest order-ahead app. Given the complexities of the project, Off the Grid wouldn't have chosen any other agency to work with. The Admios' developers did an excellent job, the management was proactive, and the software quality is exceptional. Admios is highly recommended. (Verified via email)
Reviews verified by DesignRush and sourced from the agency's profile
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The best eCommerce development company empowering you with the tools you need to conquer your industry...
Top Services:
Wearables
VR/AR
Mobile App Development
Software Development
eCommerce Development
Show more
Location
Pleasanton, California
Number of Employees
250 - 499
Average Hourly Rate
$35/hr
Minimal Budget
$25,000 - $50,000
Portfolios Count
11 Projects Listed
Folio3 Services
Wearables
VR/AR
Mobile App Development
Software Development
eCommerce Development
IoT
Web Design
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
Lioher - Magento B2B Solution
TJM
Flexiglass
Trilink
Colgate-Palmolive
Standard Chartered
Zoetis
Mercedez Benz
Barnes and Noble
Merck
Data sourced from the agency's DesignRush profile
Folio3 Reviews & Testimonials
Irshad
Customer Account Executive at Fairsquare UK
5.0★
Web Development Review from Irshad
I am very happy about how Folio3 gives 100% in the work dedication and has a very organized and energetic team who thrive with innovative ideas for our business. We are still using Folio3 on a regular basis and also get excellent updates from any usage left so that we can utilize our monthly allowance which is great teamwork.
Mike Do
CTO at Barnes & Noble
5.0★
Web Development Review from Mike Do
Whether it’s a new development, update or maintenance – Folio3 always shines through. Their turnaround time is always stellar, it’s a pleasure to work with them.
Stewart Kelly
Founder & CTO at SideStep
5.0★
Software Development Review from Stewart Kelly
They have helped us manage and execute the bulk of the engineering work necessary for integrating with our partners in the Airline, Car and Hotel verticals.
Reviews verified by DesignRush and sourced from the agency's profile
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Nika transforms companies by designing best-in-class experiences, driven by strong creative and rooted in technology, data, and strategy. We combine these capabilities to create a brand experience that grows businesses and people love...
Top Services:
Branding
Web Design
Digital Services
Web Development
WordPress Website Design
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Location
San Jose, California
Number of Employees
Under 49
Average Hourly Rate
$130/hr
Minimal Budget
$25,000 - $50,000
Portfolios Count
8 Projects Listed
Nika Services
Branding
Web Design
Digital Services
Web Development
WordPress Website Design
eCommerce Development
UI/UX Design
Digital Marketing
Creative Services
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
Santa Clara University
Intel
Path Water
Protiviti
Data sourced from the agency's DesignRush profile
Nika Reviews & Testimonials
Moms Against Poverty SF
Head of Marketing and Communications at Moms Against Poverty
5.0★
Web Design Review from Moms Against Poverty SF
Nika Agency did an incredible job designing and developing our new website. Their team was not only highly skilled but also exceptionally responsive throughout the entire process. From concept to launch, they ensured a seamless experience, incorporating our vision while delivering a high-quality, user-friendly platform. Their attention to detail, creativity, and commitment to excellence made all the difference, and we couldnt be happier with the final product. Thank you, Nika Agency!
Ramin Naderzad, MBA
Senior management at Protiviti
5.0★
Drupal Review from Ramin Naderzad, MBA
Nika has been supporting our organization for several years now for large and medium sized web projects. They’re dependable and professional, and seamlessly integrate with our marketing team to deliver high quality work.
Andrew Gonzales
Review from Google
5.0★
Andrew Gonzales's Review Sourced from Google
Hired Nikalabs a few years back because my website was a mess and I hated it. It was confusing, cluttered, and just straight up ugly!
Originally I found these guys on yelp and I wanted to give them some love on Google My Business too!
I own a carpet cleaning business in Santa Clara and I needed to find a company I could trust and feel comfortable with to build a great website. I called and talked to Ali over the phone I know that this was the right company and boy I'm glad I chose Nika Labs. I told Ali over the phone these exact words, "I want to build a clean, simple, yet elegant website" I wanted something that will be easy on the eyes and intuitive for my customers. I also expressed that there were two important tools that I absolutely needed 1) an online calendar 2) an online estimator tool. Ali, with confidence said, "We can do it no problem and we will optimize the site for both desktop and mobile web browsing". Ali's confidence assured me Nika Labs was the company to hire! He also said that once they are done I would be able to edit most of the text myself because they use Wordpress to build the site. I was sold and hired them to build the site.
Ali and Nika Labs not only delivered they over delivered. They built a website I absolutely love! They listened to my every concern. My website is clean, simple, and yet elegant just the way I imagined it to be. I 100% love my site and can't stop looking at it. We hit some bumps in the road but Ali and Nika labs worked through them all. I'm so happy I went with Nika Labs and I highly recommend hiring this company to do your website!
Andrew / Owner
Genesis Carpet Cleaning Services
Reviews verified by DesignRush and sourced from the agency's profile
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Pace Digital is a cutting-edge digital marketing agency offering innovative solutions for businesses. With expertise in SEO, social media marketing, web design, and more, we help clients optimize their online presence and drive targeted traffic. Our team of experts utilizers data-driven strategies to deliver...
Top Services:
Web Development
Mobile App Development
Web Design
eCommerce Development
Branding
Show more
Location
Oakland, California
Number of Employees
1000 & Up
Average Hourly Rate
$70/hr
Minimal Budget
$25,000 - $50,000
Pace Digitals Services
Web Development
Mobile App Development
Web Design
eCommerce Development
Branding
Digital Marketing
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
Fantasy of Flight
Jet Edge
Bill Hansen Catering
Data sourced from the agency's DesignRush profile
Pace Digitals Reviews & Testimonials
Nancy
Undisclosed at Undisclosed
5.0★
Video Production Review from Nancy
I've had the pleasure of witnessing Pace Digitals exceptional creativity and expertise in bringing ideas to life through animation. Their ability to convey complex concepts with visual storytelling is nothing short of impressive. Pace Digitals’ video animation consistently delivers engaging and visually stunning animations that captivate audiences and effectively communicate messages.
Christopher
Undisclosed at Undisclosed
5.0★
SEO Review from Christopher
The impact of Pace Digital's SEO service was not only noticeable but also transformative. The surge in international website traffic, improved search engine rankings, and enhanced global customer engagement reinforced the efficacy of their approach. Beyond the numbers, their service has played an instrumental role in positioning my brand as an authority on a global scale.
Nathaiel Lai
Undisclosed at Undisclosed
5.0★
Logo Design Review from Nathaiel Lai
Pace Digitals truly exceeded my expectations with their logo design services. Their creative team demonstrated a deep understanding of our brand vision and translated it into a captivating and unique logo. Communication was seamless throughout the process, and they delivered the final design promptly.
Reviews verified by DesignRush and sourced from the agency's profile
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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
Roboto Studio Services
Web Development
Web Design
UI/UX Design
eCommerce Development
AI Development
Software Development
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
CognitiveClouds is a custom software product and consumer app development company with a reputation for excellence in creating tailored software solutions...
Top Services:
Mobile App Development
Software Development
IoT
AI Development
eCommerce Development
Show more
Location
Fremont, California
Number of Employees
100 - 249
Average Hourly Rate
$25/hr
Minimal Budget
$25,000 - $50,000
Portfolios Count
5 Projects Listed
CognitiveClouds Services
Mobile App Development
Software Development
IoT
AI Development
eCommerce Development
UI/UX Design
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
Anmel is proven to boost productivity by up to 60% and efficiency by 45% for startups and enterprises alike. Trusted by businesses globally, Anmel delivers tangible results, driving success and growth in today's competitive market landscape...
Top Services:
AI Development
Software Development
IT Services
Mobile App Development
Wearables
Show more
Location
San Francisco, California
Number of Employees
100 - 249
Average Hourly Rate
$70/hr
Minimal Budget
$25,000 - $50,000
Anmel Services
AI Development
Software Development
IT Services
Mobile App Development
Wearables
Blockchain
eCommerce Development
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
JPMC
PL
D&G
Data sourced from the agency's DesignRush profile
Anmel Reviews & Testimonials
Brenda Benitez
Talent Attraction Analyst at Coppel
5.0★
Software Development Review from Brenda Benitez
Their expertise in custom software and mobile development allowed us to streamline our processes and boost productivity by 60%. The 1-Year Free Maintenance & Bug Fixing guarantee was a huge selling point, ensuring we had ongoing support and stability. With their award-winning, ISO-certified approach and a team of over 100 in-house experts, Anmel has truly elevated our business operations. Highly recommend them to any startup or enterprise looking for top-notch digital transformation services
Reviews verified by DesignRush and sourced from the agency's profile
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At SPINX Digital, their team of innovators, digital marketers, and video editors in tech and design, bring skills above and beyond the ordinary to every project...
Top Services:
eCommerce Development
Web Design
Mobile App Development
Branding
Digital Marketing
Show more
Location
Los Angeles, California
Number of Employees
Under 49
Average Hourly Rate
$150/hr
Minimal Budget
$25,000 - $50,000
SPINX Digital Services
eCommerce Development
Web Design
Mobile App Development
Branding
Digital Marketing
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
Beats Audio
Wet n Wild Beauty
Transwestern
GE Healthcare
Data sourced from the agency's DesignRush profile
SPINX Digital Reviews & Testimonials
Beverly Hills Ghost The Movie
Review from Google
5.0★
Beverly Hills Ghost The Movie's Review Sourced from Google
The team at Spinx Digital exceeded our expectations. From the moment I contacted them and began discussing our company’s website design needs and possible solutions, I knew we were in excellent hands.
We came to them seeking a redesign. The prior design took seven months to be completed and launched. Given our lack of prior experience with web design, we did not realize how much less arduous the process can be. Even after expending such considerable time and effort, the resulting site was clunky-looking, didn't adapt well, and was overly difficult to manage.
The Spinx team not only listened carefully and were very responsive to questions and concerns throughout the redesign process, they delivered an outstanding design that is adaptive to our needs, looks great on all devices and platforms, and is very easy to manage. Not only did they do a terrific job, they had us up and running within a few weeks. I highly recommend Spinx Digital to anyone looking for a top-notch design team that is truly a pleasure to work with.
- MissDirection Entertainment, LLC
JRMA Architects Engineers
Review from Google
5.0★
JRMA Architects Engineers's Review Sourced from Google
There are design companies, and then there are user experience, design, consulting, interface design, brilliant, and professional. SPINX Digital, is by far all & more.
When we decided to redesign our website, our vision was to bring to life our diverse portfolio that define us as a team of Architects & Engineers. We were thrilled when we found SPINX Digital Designs team. They took our portfolio and made it come to life.
The level of experience, thought and care that went into our website was amazing! Not only have we been constantly amazed at the depth of understanding on many different business models, we found ourselves working with a team of friends.
We highly recommend anyone looking for the best customer experience and professional designs. We feel that in this business we let the work do the talking and the portfolio and ethics of SPINX Digital clearly speaks for itself.
Thanks so much for creating a website that speaks to what our company motto is – clean, clear, and concise.
From your friends
JRMA Team
Tameka Flores
Review from Google
5.0★
Tameka Flores's Review Sourced from Google
We were looking for a web design company that could lead the launch of three new websites to help drive our business. We selected Spinx Digital and couldn’t be happier! Spinx has truly become a trusted partner and one that we rely on to bring our visions to life, no matter how detailed they are. Their quality of work is top notch and so is their responsiveness and support. I know that I can always count on them to keep our websites looking and performing at their very best. I highly recommend Spinx Digital for any company looking to take their websites and digital marketing efforts to the next level.
Reviews verified by DesignRush and sourced from the agency's profile
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