Our analysts identified the top outsourcing software development companies in California providing cutting-edge services that answer key business problems, from building technical software, designing websites or mobile apps to integrating operating systems and more. Narrow down your search by team size, budget, reviews and more to select the best developer for your company’s needs.
Organic rankings are determined by five factors: top services, reviews, portfolio, awards/press, and team expertise. Sponsored listings pay for a placement that appears above organic positions. Sponsorship does not affect star ratings or review content - read more on our methodology page.

GeekyAnts
VerifiedVerified by the DesignRush team for authenticity and credibility.AI Digital Product Engineering & Consulting Firm
GeekyAnts is a global GeekyAnts is an AI-powered digital product engineering and consulting specializing in AI Consulting, Product Engineering, Enterprise Modernization, Digital CX, With 15+ years of experience, weve served 550+ clients like Google, SKF, WeWork, and ICICI, delivering 800+ projects...
Top Services:
- Mobile App Development
- Web Development
- Web Design
- eCommerce Development
- UI/UX Design
- Show more
- Location
- San Francisco, California
- Number of Employees
- 500 - 999
- Average Hourly Rate
- $25/hr
- Minimal Budget
- $10,000 - $25,000
- Portfolios Count
- 36 Projects Listed
Data sourced from the agency's DesignRush profile, its website, and other relevant accountsGeekyAnts Services
Data sourced from the agency's DesignRush profileGoogle Liviit Siveco Romania Endlink Scroll News Clean Label Cloud9 PubSquad Sinam LLC PopSmartKids Inc.
GeekyAnts Reviews & Testimonials

Web Development Review from Mathias Willburger
The final product optimized the company's process as expected and has been well received by users. The company appreciated how well the Geeky Ants communicated, always punctual for meetings, and responsive to inquiries despite being in different timezones.
suresh's Review Sourced from Google
Candidates should carefully evaluate whether to participate in this interview process. Based on my experience, it seems the interviews are being conducted primarily for showcase purposes rather than actual hiring, leading to a significant waste of candidates' time, preparation, and effort.
Deekshu Gunaga's Review Sourced from Google
Very poor hiring management experience at GeekyAnts. After scheduling the interview and making candidates wait for one week, the hiring team only said the application was “on hold” and mentioned there may be an update next month. After that, there was no response or communication at all. Candidates deserve proper updates and professional handling instead of being ignored. It was worst experience
Reviews verified by DesignRush and sourced from the agency's profile View All ReviewsBring your vision to life
When startups and enterprise clients need scalable custom software, HDWEBSOFT delivers web, mobile, and serverless solutions using ReactJs, Angular, .NET Core, Java, and AWS from its Ho Chi Minh headquarters. The 250 - 499 engineer team completed a financial services mobile app using .NET on schedule, a...
Top Services:
- Web Development
- IoT
- Mobile App Development
- Software Development
- Big Data Analytics
- Show more
- Location
- Pasadena, California
- Number of Employees
- 250 - 499
- Average Hourly Rate
- $35/hr
- Minimal Budget
- $10,000 - $25,000
- Portfolios Count
- 12 Projects Listed
Data sourced from the agency's DesignRush profile, its website, and other relevant accountsHDWEBSOFT Services
Data sourced from the agency's DesignRush profilevTech Toku Logi TripScout PushPress Trustify SkyLab Speek Instantly ANX
HDWEBSOFT Reviews & Testimonials

Web Development Review from Jason Harvison
HDWEBSOFT did a fantastic work that aided the client in expanding their business, particularly in terms of growing website subscriptions. The project began on schedule and opened up a lot of opportunities for the business.

Web Development Review from David Zalik
Using a smooth user interface, HDWEBSOFT effectively updated our landing page, enticing visitors to sign up for the product's waitlist. The staff provided a customized strategy and was incredibly responsive, driven, and enthusiastic. They also used ClickUp for project administration.

Mobile App Development Review from Max Levchin
We've partnered with HDWEBSOFT who have created our app using .NET. The feedback from our customers we've received has been overwhelmingly good. We had heard positive things about the idea even before we released the app, so it's encouraging to see those comments continue once it has been out. HDWEBSOFT was set up from the start. The design team was outstanding; they completed the job on schedule and within our allocated budget. They followed a well-defined procedure that was in place.
Reviews verified by DesignRush and sourced from the agency's profile View All ReviewsAi fist design & development company
ZAAG SYSTEMS delivers scalable web, mobile & AI solutions with sleek design, driving business growth for US startups...
Top Services:
- eCommerce Development
- AI Development
- Web Development
- Software Development
- Web Design
- Show more
- Location
- Santa Clara, California
- Number of Employees
- 50 - 99
- Average Hourly Rate
- $20/hr
- Minimal Budget
- $10,000 - $25,000
- Portfolios Count
- 17 Projects Listed
Data sourced from the agency's DesignRush profile, its website, and other relevant accountsZAAG SYSTEMS Services
Data sourced from the agency's DesignRush profileGoldenmark (USA) New York City Pest control elimination (USA) Ascend Technology Inc. (USA) Inten-Ls (USA) Mustafiz Foundation (USA) Shore Teams (Neatherland) Mangtas (Singapore) CROSSMARKET (Germany) Eigenart E.k (Germany) KADAD (Quatar)
ZAAG SYSTEMS Reviews & Testimonials

Mobile App Development Review from Dr.Laine Powell
We hired ZAAG System Ltd to achieve several objectives, primarily to develop a cutting-edge mobile app for Tech Sassy Girlz. Our goals included enhancing user engagement, streamlining processes, and ultimately expanding our digital presence. ZAAG System Ltd demonstrated exceptional expertise in understanding our requirements and translating them into a comprehensive scope of work. Within just a week of project initiation, ZAAG System Ltd showcased tangible results, including increased user engagement metrics, such as longer session durations and higher retention rates. They consistently delivered milestones on time, adhering to the agreed-upon timeline without compromising on quality. Their team displayed a remarkable blend of technical proficiency, creativity, and dedication, resulting in a mobile app that exceeded our expectations. Overall, ZAAG System Ltd proved to be an invaluable partner in our journey to revolutionize digital education for young women. We wholeheartedly recommend ZAAG System Ltd to any organization seeking top-notch mobile app development services.

eCommerce Development Review from Robb Fahrion
We were creating a product in the advertising technology environment. It was a product for publishers to improve their revenue by making a dynamic inventory on their side and getting more income out of their advertising. We needed help with the recruitment of an outsourced, part-time frontend developer with broad experience and availability.

Web Design Review from Isabella Susan
From start to finish, our team at Zaag Systems Ltd., led by Tony, Don, and Mike, was a pleasure to work with. Their approach to web design and development is both collaborative and consultative. They took the time to understand our business needs and goals and provided expert guidance on the best strategies.
Reviews verified by DesignRush and sourced from the agency's profile View All ReviewsTrusted Software Partner For Global Businesses
Enterprise Software Development and Maintenance Services Provider...
Top Services:
- Software Development
- Mobile App Development
- Web Development
- AI Development
- IT Services
- Show more
- Location
- California City, California
- Number of Employees
- Under 49
- Average Hourly Rate
- $20/hr
- Minimal Budget
- $10,000 - $25,000
- Portfolios Count
- 10 Projects Listed
Data sourced from the agency's DesignRush profile, its website, and other relevant accountsMLTech Soft Services
Data sourced from the agency's DesignRush profilePSA Marine Unilever LOF International Yen Viet JSC Lothamilk Smile For Success Dental Center DCSE Lab InApps Oxi House Pham Lam JSC
Let Us Solve Your Outsourcing Software Needs
Solvd, Inc. is a renowned outsourcing solutions and engineering company specializing in Mobile, Web, and Quality Assurance solutions. With a global presence and a team of over 230 professionals, we serve VC-backed startups, tech companies, and enterprises across various industries. Our flexible approach...
Top Services:
- Mobile App Development
- Software Development
- Web Design
- UI/UX Design
- Web Development
- Show more
- Location
- Roseville, California
- Number of Employees
- 100 - 249
- Average Hourly Rate
- $40/hr
- Minimal Budget
- $10,000 - $25,000
- Portfolios Count
- 4 Projects Listed
Data sourced from the agency's DesignRush profile, its website, and other relevant accountsSolvd Services
Data sourced from the agency's DesignRush profileNerwallet Famous Fitbod Edcast EllieMae
Solvd Reviews & Testimonials
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Software Testing Review from Marina Ryzhikova
According to Marina Ryzhikova of NerdWallet, Solvd is the most well-rounded service provider she has encountered. Solvd's experience and tools sped up NerdWallet's processes and allowed the partnership to hit the ground running. Ryzhikova commends the agency's skilled project management, which had all the necessary resources. (Source: 3rd Party Review Platform)
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Web Development Review from James Minor
James Minor of Acelab commends Solvd's services in delivering an MVP within deadline and budget. As a result, the company was able to work on its portal upload and build a sizable database for its projects. (Source: 3rd Party Review Platform)
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Software Testing Review from Mikita Cherkasau
Mikita Cherkasau of Your Extra Marketer is impressed with Solvd's commitment to innovation and customer satisfaction. Thanks to the agency's reports and recommendations, the client experienced a significant improvement on its website. The agency communicated via email, text messages, and Google Meet. Cherkasau highlights the agency's meticulously managed workflow from start to finish. (Source: 3rd Party Review Platform)
Reviews verified by DesignRush and sourced from the agency's profile View All ReviewsTechnology, Innovation, Inspiration
Mob Inspire is a software development company carrying an ambition to improve software standards used in various industries. Our solutions assist startups to attain stability and enable businesses to eliminate vulnerabilities in their tech infrastructure...
Top Services:
- Software Development
- Wearables
- IoT
- Mobile App Development
- VR/AR
- Show more
- Location
- Palo Alto, California
- Number of Employees
- 50 - 99
- Average Hourly Rate
- $50/hr
- Minimal Budget
- $10,000 - $25,000
- Portfolios Count
- 1 Project Listed
Data sourced from the agency's DesignRush profile, its website, and other relevant accountsMob Inspire Services
Data sourced from the agency's DesignRush profileAlianza Taxi alBaraka GoWey Allo Services Caddytop Town Around Trail Connect
Mob Inspire Reviews & Testimonials

Mobile App Development Review from David Watts
Mob inspire completed the project on time and within budget. The team utilized monday.com to manage tasks and enable the client to oversee progress. Moreover, Mobinspire's experience and strong sense of teamwork played vital roles in ensuring a successful outcome.
Reviews verified by DesignRush and sourced from the agency's profile View All ReviewsWe Bring The Tech. You Get The Wins.
Teamvoy is an AI engineering and transformation partner. We help companies make smarter technology decisions and turn them into production-ready software...
Top Services:
- Software Development
- AI Development
- Design Services
- Web Design
- UI/UX Design
- Show more
- Location
- Covina, California
- Number of Employees
- 50 - 99
- Average Hourly Rate
- $50/hr
- Minimal Budget
- $10,000 - $25,000
Data sourced from the agency's DesignRush profile, its website, and other relevant accountsTeamvoy Services
Data sourced from the agency's DesignRush profileNasdaq Panasonic Swisscom Afriland First Bank OSL Velory Neopenda Mitipi Garrison Flood Control Market Access Direct
Teamvoy Reviews & Testimonials
Саша Кравченко (sashko)'s Review Sourced from Google
it feels like you're working in an expensive boutique company with the most cutting-edge projects and leading industry experts
Альона Какора's Review Sourced from Google
Teamvoy is a professional company with strong expertise and a team of specialists who truly know their field. The atmosphere within the company is comfortable, open, and friendly, which makes working here enjoyable and productive.
Qui Cung's Review Sourced from Google
As a swiss company, we collaborated with teamvoy for the development of our website and application.We are very satisfied by the work done by their team and how the troubleshooted our issues.
Reviews verified by DesignRush and sourced from the agency's profile View All ReviewsBuilding Tomorrow, Together
Through 12 years of experience, we take pride in developing amazing software applications used by millions of people around the world...
Top Services:
- Web Design
- eCommerce Development
- WordPress Website Design
- Software Development
- Staff Augmentation
- Show more
- Location
- Chula Vista, California
- Number of Employees
- Under 49
- Average Hourly Rate
- $49/hr
- Minimal Budget
- $10,000 - $25,000
- Portfolios Count
- 4 Projects Listed
Data sourced from the agency's DesignRush profile, its website, and other relevant accountsRivka Development Services
Data sourced from the agency's DesignRush profileDovetail Workwear RateSpot The Moss Agency Clarifee Glow Gifts Smileplan Ford and Wyatt Mitek Quoin Design Latinas in Tech
Software, Mobile App, Games Development Company.
The App Founders is a recognized leader in the mobile app development industry that excels in building mobile apps to upscale your business and bolster your customer retention rate. Well transform your idea into a market-ready application on schedule and within budget...
Top Services:
- Mobile App Development
- Software Development
- eCommerce Development
- Product Design
- CRM Consulting
- Show more
- Location
- Santa Clara, California
- Number of Employees
- 100 - 249
- Average Hourly Rate
- $70/hr
- Minimal Budget
- $10,000 - $25,000
- Portfolios Count
- 16 Projects Listed
Data sourced from the agency's DesignRush profile, its website, and other relevant accountsThe App Founders Services
Data sourced from the agency's DesignRush profileAirhme Bally Rideo Your Wish On Dragon Force Ninja Tamkeen Care Color Jumper Stacker Cracker
The App Founders Reviews & Testimonials
Walter White's Review Sourced from Google
Initially, The App Founders showcased a pro-found grasp of blockchain technology and its practical applications. They adeptly elucidated intricate concepts in a manner that resonated with my non-technical background, facilitating smoother communication and active involvement in developmental discussions.
Dustin Wheeler's Review Sourced from Google
it was such a pleasure working with App Founders and just how easy and professional they were. I quickly realized how the industry is full of thirsty, needy bots and scammers I’m trying to get your attention, but tons of unsolicited phone calls and texts. Dealing with these guys was a breath of fresh and definitely showed up in value above all the rest.
Munna Alam's Review Sourced from Google
Got to say, The App Founders really impressed me! They totally nailed the design for my mobile game. Can't wait to team up with them again to make and promote the game. Definitely recommending them to anyone looking for top-notch game development services!
Reviews verified by DesignRush and sourced from the agency's profile View All ReviewsResolving Security, Computer and Network Issues 24-7
Single Point of Contact is a Managed Security Service Provider managing and resolving our clients network and security issues. We provide a 24-7 help desk and Servie Level Agreements guaranteeing we will begin resolution within a specified time...
Top Services:
- Cybersecurity
- IT Services
- Managed Services
- Software Development
- VR/AR
- Show more
- Location
- Palo Alto, California
- Number of Employees
- 50 - 99
- Average Hourly Rate
- $50/hr
- Minimal Budget
- $10,000 - $25,000
Data sourced from the agency's DesignRush profile, its website, and other relevant accountsSingle Point of Contact Services
Data sourced from the agency's DesignRush profileKagomeUSA Google Apple The Withum Group Shorenstein Realty Services
Single Point of Contact Reviews & Testimonials
Merwin Bachiller's Review Sourced from Google
I am deeply disappointed with my experience with Single Point of Contact (SPOC). Despite being awarded in unpaid wages by the California Labor Commissioner, SPOC and its leadership have failed to take any responsibility or make good on the judgment.In an effort to resolve the matter amicably and avoid further legal complications, I offered a settlement for just nearly 75% less than what I was legally owed. I was genuinely hoping for a fair resolution and gave every opportunity for SPOC to make things right.Unfortunately, even this generous offer was ignored. Their refusal to own up to their obligations reflects a serious lack of accountability and professionalism. Employees and contractors should be aware of how this company handles financial and legal responsibilities.If you're considering working with or for SPOC, I strongly encourage you to exercise caution and do your due diligence
Channing Thomas's Review Sourced from Google
I've had them as a vendor for my business as well working with them on many jobs. They offer great support from a pool of talented techs and if something goes wrong they go above and behind to resolve the issue. Their NOC was also English speaking, US Based and top notch which is something that you don't find often in companies.
Reviews verified by DesignRush and sourced from the agency's profile View All ReviewsEnable, innovate, transform
A team of Tech-savants focused on simplifying complexities in the technology realm. We combine our technical expertise with product mindset that helps Enterprises to strengthen and transform their business by providing state-of-the art software development services...
Top Services:
- Software Development
- Mobile App Development
- Blockchain
- Software Testing
- AI Development
- Show more
- Location
- Fremont, California
- Number of Employees
- 100 - 249
- Average Hourly Rate
- $30/hr
- Minimal Budget
- $10,000 - $25,000
Data sourced from the agency's DesignRush profile, its website, and other relevant accountsAgile Soft Systems Services
Data sourced from the agency's DesignRush profileStanford University HighWire Press McGill Teak
Agile Soft Systems Reviews & Testimonials
Namita Mahajan's Review Sourced from Google
My experience at AgileSoft System, Inc. has been excellent. The management had been too supportive of every requirement for learning. Weekly meetings, fun activities, and brainstorming on new technology/projects make the workplace impressive and allow growth. Even your workmates are always ready to assist you in every doubt and make sure you follow the right path. Overall, the company is an incredible journey and a great learning place.
shekhar choudhari's Review Sourced from Google
Agile Soft Solutions is a very good company to work in while enjoying it at the same time. The work culture is very amazing. Management is very supportive whenever there is some kind of support required. The company also encourages and recognizes the effort of every associate. This motivates me to work even much smarter and harder. Finally, I am very much glad and lucky to work and share my views in the company.
Ashish Kumar's Review Sourced from Google
I have worked with AgileSoft Systems, Inc. for the last 2.1 years. I started my professional career with the company as a Fresher. The experienced seniors of the company provide excellent training and learning to Freshers. I got the opportunity to work with international clients that really upskilled my talent. Here are some of my personal experiences with them:- On-time Salary and didn't lay off any employee during the pandemic.- They provide complete flexibility to employees including break timings and shift timings- World-class Infrastructure and facilities.- Organize outings- Supportive co-workers
Reviews verified by DesignRush and sourced from the agency's profile View All ReviewsInnovative Digital Solutions For A Smarter Future
Rysysth Technologies is a full-service IT solutions provider specializing in web development, digital transformation, and enterprise solutions. We help businesses scale with modern technologies, user-friendly designs, and performance-driven strategies. From custom websites to cloud-based platforms, our team...
Top Services:
- AI Development
- Blockchain
- Software Development
- Mobile App Development
- Show more
- Location
- Sacramento, California
- Number of Employees
- Under 49
- Average Hourly Rate
- $45/hr
- Minimal Budget
- $10,000 - $25,000
Data sourced from the agency's DesignRush profile, its website, and other relevant accountsRysysth Technologies Services
Data sourced from the agency's DesignRush profileSoftware & IT Industry Corporate Services Industry eCommerce Industry
Rysysth Technologies Reviews & Testimonials
Ketul Patel's Review Sourced from Google
Blockchain development service company that provides organizations of any size and business domain with blockchain-powered distributed systems. Develop a new blockchain project from scratch or adjust existing solutions with the help of a reliable partners.
Reviews verified by DesignRush and sourced from the agency's profile View All ReviewsEmpower Your Business With Custom Software, AI, & Nearshore Talent Solutions
Bluelight is a U.S.-headquartered nearshore software development consultancy. Bluelight provides top-tier IT talent from Latin America (and onshore) who are fluent in English, work U.S. business hours, and serve as a cost-effective alternative to U.S.-based hires...
Top Services:
- Software Development
- Software Testing
- AI Development
- Mobile App Development
- Staff Augmentation
- Show more
- Location
- Sacramento, California
- Number of Employees
- 250 - 499
- Average Hourly Rate
- $35/hr
- Minimal Budget
- $10,000 - $25,000
Data sourced from the agency's DesignRush profile, its website, and other relevant accountsBluelight Services
Data sourced from the agency's DesignRush profileAWS Google Cloud Salesforce GoDaddy Deel MGM Resorts International Uber LendSwift Simpleview BMG360
Bluelight Reviews & Testimonials
Nathan Dyer's Review Sourced from Google
As a result of our engagement with Bluelight Consulting, we are saving hours of developer time every week. We are able to deploy several times a day to multiple environments and going forward we’re going to better position ourselves as a company that offers tools that provide timely solutions for our internal users, which is what we pride ourselves on. There has been a tremendous lasting effect without a doubt. They meet set timelines within budget, keep clear communication lines, and are more than ready to address any emerging issues in a timely fashion. You can sense a sincere desire to meet our needs to the letter. It makes a huge difference. I must say we’ve worked with other vendors before where their ego was much bigger than working with us.
Emily Lien's Review Sourced from Google
Our cooperation with Bluelight Consulting worked out very well. Their experts find the right solutions for various problems, they work quickly, provide the right people for each job, and offer valuable suggestions on how to improve the product. Their flexibility and ability to adjust to our situation was the most important factor for the success of the project.
David McCulloh's Review Sourced from Google
After a thorough search for the best DevOps-as-a-Service companies in the US, and based on testimonials from past clients on their website, we felt the Bluelight Consulting team was the right choice to collaborate with on this project. And from the moment we booked a discovery call with them, we knew we had made the right choice. Thank you Bluelight Consulting!
Reviews verified by DesignRush and sourced from the agency's profile View All ReviewsWhen UX & AI Both Matter
Our PORTFOLIO INCLUDES marketplaces, e-commerce, workflow automations, AI assistants, corporate websites, banking apps, data warehouse initiatives, and more...
Top Services:
- AI Development
- Web Development
- eCommerce Development
- Software Development
- Web Design
- Show more
- Location
- San Mateo, California
- Number of Employees
- Under 49
- Average Hourly Rate
- $37/hr
- Minimal Budget
- $10,000 - $25,000
- Portfolios Count
- 4 Projects Listed
Data sourced from the agency's DesignRush profile, its website, and other relevant accountsimaga Services
Data sourced from the agency's DesignRush profileCayala Halo Zayn Matrixsoft Megapolis XDS Astana Team AeroCity AKFA Group
For Seamless Collaborations
OutsourcingDev is your expert partner in outsourcing services. Founded by a seasoned data Engineer, we offer customized and high-quality solutions. Our comprehensive services cover the entire development lifecycle, and we specialize in assembling dedicated development teams for seamless collaboration...
Top Services:
- Software Development
- Mobile App Development
- Web Design
- Web Development
- UI/UX Design
- Show more
- Location
- San Francisco, California
- Number of Employees
- Under 49
- Average Hourly Rate
- $55/hr
- Minimal Budget
- $10,000 - $25,000
Data sourced from the agency's DesignRush profile, its website, and other relevant accountsOutsourcingDev Services
Data sourced from the agency's DesignRush profileRedEVT LlamaCuba Truelogic Waypoint Smartlinx
Global IT Solutions
We are a digital transformation consulting and software development company that delivers cutting edge solutions for global organizations and technology startups. Since 2000 we have been helping companies and established brands re-imagine their business through digitization...
Top Services:
- Mobile App Development
- Software Testing
- Software Development
- Web Design
- eCommerce Development
- Show more
- Location
- Saratoga, California
- Number of Employees
- 250 - 499
- Average Hourly Rate
- $50/hr
- Minimal Budget
- $10,000 - $25,000
Data sourced from the agency's DesignRush profile, its website, and other relevant accountsPratham Software Services
Data sourced from the agency's DesignRush profileBoston Consulting Group McKinsey Reliance Johnson & Johnson Genpact Cisiv Touch Star Workshare Motorola ALLEN Digital
Trusted Software Engineering Solutions Provider based in Vietnam, With A Global Presence.
As a trusted bespoke software development outsourcing company, we help business organizations tackle challenges of outdated software, inefficient processes, and poor digital presence...
Top Services:
- Software Testing
- AI Development
- Software Development
- Mobile App Development
- CRM Consulting
- Show more
- Location
- San Jose, California
- Number of Employees
- 100 - 249
- Minimal Budget
- $10,000 - $25,000
Data sourced from the agency's DesignRush profile, its website, and other relevant accountsTrustify Technology Services
Data sourced from the agency's DesignRush profileTakeda Pharmaceutical Company KlikDokter LK Technology
Trustify Technology Reviews & Testimonials
Crystal I'm's Review Sourced from Google
Trustify Technology - Software Development Outsourcing is where I am working, and I am very satisfied. The software development team here is excellent and produces high quality products. The working environment is professional and colleagues support each other. The company also pays special attention to the personal development of employees. I am proud and highly recommend working at Trustify Technology.
Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
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