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
10 Companies-Rankings updated: September 05, 2026
Each agency listed on DesignRush is assessed for industry expertise and customer testimonials are evaluated in order to provide you with a vetted selection. Certain listings represent 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
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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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I am grateful that you took the time to visit! Because you are here, I may assume that you are searching for help with some aspect of software development, whether it is UI/UX design or mobile app development. You are at the appropriate location. Your unique requirements for digital company might become a...
Top Services:
Mobile App Development
Web Design
Software Development
WordPress Website Design
eCommerce Development
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Location
Los Angeles, California
Number of Employees
100 - 249
Average Hourly Rate
$30/hr
Minimal Budget
$25,000 - $50,000
Portfolios Count
16 Projects Listed
Differenz System Services
Mobile App Development
Web Design
Software Development
WordPress Website Design
eCommerce Development
IoT
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
London Sports
G4S
Pxsell
Hubfleet
HomeFit RL
Grow Games & Icebreakers
Awakened Mind
Home Inspector Tech
Data sourced from the agency's DesignRush profile
Differenz System Reviews & Testimonials
Mary
Undisclosed at Undisclosed
3.2★
Mobile App Development Review from Mary
Differenz System, thank you so much for your help with my custom application development project. Your expertise and professionalism was fantastic. I would definitely recommend your company to anyone looking for a top-notch web development service. Thanks again.
Romy Parikh
Owner at 3W Creators LLP
5.0★
Mobile App Development Review from Romy Parikh
I am very pleased with Differenz System's overall services and support along with their state of the art mobile application delivery. Your team has excellent communication skills and a fast response and turnaround time. Highest work quality. I can say that Differenz System is a honest and decent group of people with the highest work ethic I have seen for development team. Wishing you people very best. Cheers.
Peter Meldrum
Digital Product Manager at London Sport
5.0★
Web Development Review from Peter Meldrum
Differenz have provided London Sport excellent web development services across three products. We have been delighted with all areas of their work; expertise, technical knowledge and account management. We have asked Fazil and his team to take on the rebuild of an existing product, the ongoing development of another and build another from scratch – on all they have exceeded expectations.
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
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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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Sleepless Media is driven by a deep passion for meticulously creating comprehensive brand experiences that revolve around bespoke and adaptable Shopify websites...
Top Services:
WordPress Website Design
Web Development
Web Design
eCommerce Development
Logo Design
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Location
Soquel, California
Number of Employees
Under 49
Average Hourly Rate
$175/hr
Minimal Budget
$25,000 - $50,000
Portfolios Count
24 Projects Listed
Sleepless Media Services
WordPress Website Design
Web Development
Web Design
eCommerce Development
Logo Design
Graphic Design
Branding
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
Levis
Swisher Sweets
Heartland RVs
August Home
Lenny and Larry's
Island Stone
Sanders Candy
Clearly Filtered
Zpacks
Arlen Ness
Data sourced from the agency's DesignRush profile
Sleepless Media Reviews & Testimonials
Webman Technologies
Review from Google
5.0★
Webman Technologies's Review Sourced from Google
Sleepless Media did an outstanding job on our Shopify project. Their team combines creativity with deep technical expertise, making the whole process smooth and stress-free. They truly understood our brand, designed a store that looks stunning, and optimized it for performance and sales. Communication was always clear, deadlines were met, and they went above and beyond to deliver a result that exceeded our expectations. If you’re looking for a reliable partner for Shopify design and development, Sleepless Media is the perfect choice. Highly recommended!
Barry Pinto
Review from Google
5.0★
Barry Pinto's Review Sourced from Google
Sleepless Media is the kind of web design agency that I've been wanting to work with for years. My company's website was in severe need of a redesign, and we knew that it was going to be a complicated project in terms of content migration, customizations, and attention to detail. I also needed a design agency that could work hand in hand with our SEO people. Fortunately I found Jon and team, who are not only extremely talented web designers but great listeners as well. Also a very patient team - we were far from a well prepared client in terms of having our site content ready to go, but they made the upgrade happen for us regardless. If you have been thinking about a redesign and need a Shopify partner that you can trust, this is your agency. Highest recommendation, and I plan on sending them all of our future web development business.
Victoria Comeau
Review from Google
5.0★
Victoria Comeau's Review Sourced from Google
I reached out to Sleepless Media after the company I originally chose to work with to transition from BigCommerce to Shopify did an awful job. What was supposed to be a three month project was now a year and a half nightmare. The team at Sleepless Media was so knowledgeable, transparent, communicative, and just amazing to work with. If I needed any clarification on anything, they didn’t hesitate to offer to hop on a call with me to make sure I knew what was going on. Every member of the team I have interacted with has been nothing but amazing. I can’t recommend Sleepless Media enough. The work they do is top notch, and worth every dollar. If you work with them, you know the project is going to be done and it’s going to be done exceptionally.
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
Show more
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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From cohesive brand systems to high-performing websites, to data-driven marketing strategies and content that resonates with diverse audiences, we deliver scalable solutions that help you lead; whether you're a mission-driven startup, an investor, an enterprise, or a nonprofit...
Top Services:
Branding
Web Development
Web Design
eCommerce Development
WordPress Website Design
Show more
Location
San Francisco, California
Number of Employees
Under 49
Average Hourly Rate
$150/hr
Minimal Budget
$25,000 - $50,000
Portfolios Count
25 Projects Listed
Wunderdogs Services
Branding
Web Development
Web Design
eCommerce Development
WordPress Website Design
Digital Services
Mobile App Development
Logo Design
Digital Strategy
SEO
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
Be careful, this site always asks you for more money to be able to release funds. Stay away and do not put any money in. This company is fraudulent.
Roman Sobachevskiy
Review from Google
5.0★
Roman Sobachevskiy's Review Sourced from Google
Wunderdogs created Mindrock’s visual identity, collateral templates, and our website. We loved working with them and would highly recommend their services — not only they are a great team of creative professionals, but also they know how to work with innovative, high-tech industries, which is a unique focus that served us very well.
Alisa Ellie
Review from Google
5.0★
Alisa Ellie's Review Sourced from Google
Wunderdogs built our website from scratch, set up marketing strategy and helped us break even in the first three months since launch.
Reviews verified by DesignRush and sourced from the agency's profile
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Kwanso, recognized as a top 5 mobile company by Silicon Review, is a team of expert designers, developers, machine learning engineers, and consultants dedicated to building exceptional digital experiences...
Top Services:
Software Development
Mobile App Development
AI Development
eCommerce Development
Show more
Location
San Francisco, California
Number of Employees
Under 49
Average Hourly Rate
$40/hr
Minimal Budget
$25,000 - $50,000
Portfolios Count
5 Projects Listed
Kwanso Services
Software Development
Mobile App Development
AI Development
eCommerce Development
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
Whirlpool
Craftsman
Gladiator
Kenmore
RealREPP
TrueReview
College Advisor
BioMarker
Uptok
Bushnell
Data sourced from the agency's DesignRush profile
Kwanso Reviews & Testimonials
Full Circle Healthcare Solutions
Review from Google
1.0★
Full Circle Healthcare Solutions's Review Sourced from Google
Although I have responded to be removed from this person‘s spamming emails, they still continue to email me over and over again. This is borderline rude and an excusable since I have responded to those emails to be opted out. Regardless of the business the way that you represent it is not how I do business. Normally I don’t leave responses but after three or four times of receiving the same emails when requesting to be opted out I figured this was the best place to post.
Reviews verified by DesignRush and sourced from the agency's profile
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Your Premier iPad App Development & Marketing Studio
Wve Labs is an elite iPad app development and marketing studio, leveraging the power of the latest Swift language through Xcode. Serving a broad spectrum of clients, our team's synergy, rapid execution, and transparent communication make us the go-to choice for businesses seeking an enhanced digital...
Top Services:
Mobile App Development
Blockchain
AI Development
Software Development
VR/AR
Show more
Location
Newport Beach, California
Number of Employees
Under 49
Average Hourly Rate
$50/hr
Minimal Budget
$25,000 - $50,000
Portfolios Count
5 Projects Listed
Wve Labs Services
Mobile App Development
Blockchain
AI Development
Software Development
VR/AR
UI/UX Design
Web Development
Graphic Design
Digital Marketing
Logo Design
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
Sony
Maui Jim
Honda
Guardian
Com-Power
VIZI
Crave on Campus
Bonfire
The Now
Super Gems Jewelry
Data sourced from the agency's DesignRush profile
Wve Labs Reviews & Testimonials
delaney day
Review from Google
5.0★
delaney day's Review Sourced from Google
I have had the pleasure of working at Wve Labs for over a year now, and it has been an absolutely amazing experience. The leadership is dedicated to ensuring each employee’s success and is highly focused on the company’s growth. Being part of such a dynamic and diverse team with a fantastic client base makes me proud.
The company offers numerous opportunities for professional development, and the collaborative atmosphere encourages innovation and creativity. Every day presents new challenges and learning opportunities, making the work both engaging and fulfilling.
Additionally, Wve Labs prioritizes community involvement and social responsibility, frequently organizing events and initiatives that give back to society. This comprehensive approach not only enriches our corporate culture but also instills a sense of contributing to a larger cause.
In conclusion, my time at Wve Labs has been extremely fulfilling, and I look forward to the future as we continue to grow and innovate together.
Jack Joyce
Review from Google
5.0★
Jack Joyce's Review Sourced from Google
Working at Wve Labs has been an incredible experience, and I can't speak highly enough about the company's atmosphere and culture. From the moment I joined, I was welcomed into a collaborative and supportive environment where creativity and innovation are not just encouraged but celebrated.
The culture at Wve Labs is one of inclusivity and respect. Every team member's ideas are valued, and there's a strong sense of camaraderie that makes coming to work each day a pleasure. The leadership team is approachable and genuinely cares about the growth and well-being of every employee, fostering a workplace where people feel motivated to do their best.
Wve Labs truly excels in creating a positive and dynamic work environment. The office is buzzing with energy, driven by passionate individuals who are dedicated to delivering top-notch results. The company also offers numerous opportunities for professional development, which has allowed me to expand my skill set and grow in my career.
Anthony Cecere
Review from Google
5.0★
Anthony Cecere's Review Sourced from Google
I've been at Wve Labs now for 4+ years and have enjoyed working here! I appreciate my team and their diligence to our work. I have had the pleasure of managing several projects and find Wve to be a great place to work and grow as an individual.
Reviews verified by DesignRush and sourced from the agency's profile
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Aiming to enhance the lives of billions of users with innovative technology solutions.
BestPeers is a top software development company specializing in custom software, website development, UX/UI design, and full-stack solutions. With a focus on quality, innovation, and timely delivery, BestPeers creates consumer-centric tech solutions across diverse industries, ensuring client satisfaction and...
Top Services:
Digital Strategy
Web Design
eCommerce Development
Web Development
UI/UX Design
Show more
Location
California City, California
Number of Employees
250 - 499
Average Hourly Rate
$25/hr
Minimal Budget
$25,000 - $50,000
Best Peers Services
Digital Strategy
Web Design
eCommerce Development
Web Development
UI/UX Design
WordPress Website Design
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts