All Quality Assurance Services in California
TRIARE
4.9(11 reviews)TRIARE unlocks IT potential of YOUR business
TRIARE is a WEB and MOBILE software development company based in Europe. We are delighted to offer our services as your long-term partner, taking all technical matters off your shoulders and allowing you to focus on your business development. YOU WILL GET: ✔ In-house team . Work with a dedicated team that is 100% focused on your product and located in the same office. ✔ Efficiency & transparency , as our process is based on Scrum methodology and managed by certified Scrum Masters. ✔ Fast result. Working with us, you will get the first result in 1 week. ✔ High quality, as TRIARE has well-established processes of software development and experienced specialists. ✔ Full cycle development . Our company covers all stages of development, handling everything from Discovery and prototyping to Design, development, and maintenance. ✔ IP rights . From the very beginning, you are the only owner of the intellectual property of your project materials: source code, design, documentation, etc. ✔ Warranty period will be provided for your system for free. ASPECTS OF OUR MINDSET: - Focused on results. We are focused on the result of your business with an understanding of the real goals and KPIs that our team should achieve. - Solution Provider. It means that we always come to you with solutions, not with questions. We take all technical aspects of the project off your shoulders, allowing you to focus on the marketing and business strategies. - We go the extra mile. Being a proactive company, we always think and take a step ahead. TECHNOLOGIES WE USE: - Mobile app development: Kotlin, Java, Swift, Objective-C. - Cross-platform development: Flutter, React Native. - Web frameworks: Node.JS, React.JS, PHP, Ruby on Rails.Looking for work in Quality AssuranceLocated in Fairfax, United States (+3)From €5,000 for Quality AssuranceWorked in Real Estate (+20)Speaks English, Ukrainian51-200 membersInApps Technology
5(15 reviews)The Trusted Technology Companion In Your Digital Journey
Top awardedYour AI-Driven Offshore Development Partner. Top-Rated 5.0/5 on Sortlist. InApps Technology is a leading Offshore Development Center (ODC) and IT Staff Augmentation partner with 10+ years in business, embedding dedicated engineering teams for high-growth companies. On Sortlist, our clients rate us 5.0/5. We're also #1 in Vietnam for Application Development and IT Staff Augmentation on Clutch , top tier across Southeast Asia, and recognized globally. What sets us apart - AI-Driven Development: We embed GenAI across the lifecycle, from requirements mapping and code generation to test automation and observability, using tools like Claude, Cursor, and GitHub Copilot in every sprint, to ship faster with higher quality. - Elite Talent, On Demand: Curated senior engineers for mobile, web, cloud, data/AI, and blockchain, placed in about a week on average. - Flexible Engagements: ODC/dedicated teams, IT Staff Aug, or outcome-based projects, scale up or down without friction. - Security & IP Protection : Security-first workflows, strict access control, and full IP ownership on delivery, backed by ISO 27001 certification. Proven Value : Transparent pricing and offshore efficiency that can save up to 65% versus local hiring while maintaining enterprise-grade standards. Where we excel SaaS platforms, FinTech, eCommerce/Marketplaces, EdTech, Healthcare, Logistics, and Blockchain/Web3. How we work Clear sprint cadence, demo-every-two-weeks, proactive risk management, and executive-level reporting. Expect responsive communication, English-fluent teams, and time-zone overlap for smooth collaboration. Ready to move from idea to impact? Share your brief on Clutch or request a free 30-minute discovery call. We’ll respond within 24 hours with a tailored approach, team mix, and first milestones.Looking for work in Quality AssuranceLocated in El Segundo, United States (+1)From €1,000 for Quality AssuranceWorked in Food (+14)Speaks English501-1000 members3techagency
4.9(13 reviews)Grow your business with automated digital marketing.
At 3techagency we’re a ROI-Driven digital marketing agency helping businesses scale up marketing efforts seamlessly through tools & services that grow revenue, improve efficiency & team versatility.Looking for work in Quality AssuranceLocated in Los Angeles, United States (+1)From €100 for Quality AssuranceWorked in Consumer Electronics (+4)Speaks English, Swahili11-50 membersVardot
(0 review)Enterprise Drupal platforms for global nonprofits, universities, healthcare and media organizations
Vardot is a Drupal and open-source partner that builds reliable, mission-critical digital platforms for organizations driving real-world impact. Since 2011, we've designed, built, and launched 200+ web platforms across 30+ countries for organizations including UNHCR, UNICEF, BCG, and Georgetown University, rated 4.9/5 on Clutch across 60+ verified reviews. We cover the full lifecycle: strategy, UX and design, custom development, migration, support and maintenance, and DevOps. We're a Drupal Diamond Certified Partner, one of the largest Acquia-certified teams in the world, and a Top 20 contributor on drupal.org. We created and maintain Varbase, a widely used enterprise Drupal distribution, and as a Gold Sponsor of the Drupal AI Initiative, we're building toward AI-ready enterprise platforms. Clients choose us for deep technical expertise, secure and standards-compliant delivery, and a proven track record on complex enterprise and public-sector builds.Looking for work in Quality AssuranceLocated in Santa Clara, United StatesFrom €1,000 for Quality AssuranceWorked in Media (+6)Speaks English, Arabic201-500 membersPlavno
5(16 reviews)AI-First Software Company: Secure Agents, Voice Assistants, and Scalable Cloud.
Top awardedPlavno is a premier software development house with over 20 years of experience and a highly qualified team of experts in your industry. Fully-fledged teams of specialists cover each stage of product creation , from product management and analysis to design, development, testing, and ongoing support. We have a unique advantage , our pre-formed full teams work exclusively on products in their specific domains, such as Healthcare, E-Learning, FinTech, Travel & Hospitality, Fleet management and more. We can help you with: ✔ Web Development ✔ Mobile App Development ✔ CRM/CMS/SaaS Development ✔ Chat and Chatbot Development ✔ Web3 / DeFi / DAO / Smart contract ✔ WebRTC Stop struggling with bloated budgets and slow time-to-market. At Plavno, our fully-fledged team provides cost-effective and streamlined solutions that minimize technical debt and maximize your product's potential. With end-to-end support and a proven track record in the SAFe Scaled Agile Framework, we're the partner you need to succeed. LET’S CONNECT Let us help you choose the best path forward to deliver the perfect solution: Admin@plavno.ioLooking for work in Quality AssuranceLocated in Alexandria, United States (+2)From €10,000 for Quality AssuranceWorked in Beauty (+19)Speaks English, French(+2)51-200 membersDebut Infotech
5(9 reviews)Results, Not Promises
Highly recommendedDebut Infotech is an AI-augmented blockchain and software development company helping organizations across financial services, healthcare, supply chain, and digital platforms build systems that perform reliably in complex, regulated environments. Founded in 2011 and blockchain-native since 2015, the company brings engineering discipline and technology depth to enterprises moving from fragmented pilots to production-grade systems. With delivery centers across the USA, UK, Canada, and India, Debut Infotech combines regional market understanding with globally distributed engineering capability — enabling clients to move with speed, consistency, and governance. Service areas: Artificial intelligence and generative AI — Enterprise LLM integration, AI agent development, retrieval-augmented generation (RAG) pipelines, predictive analytics, computer vision, and intelligent process automation embedded at the system architecture level. Blockchain and Web3 development — Smart contract engineering, DeFi protocol development, real world asset (RWA) tokenization, cryptocurrency exchange infrastructure, and enterprise blockchain on Hyperledger Fabric and Corda. Mobile application development — Native iOS, Android, and cross-platform applications (React Native, Flutter) architected for AI integration, enterprise-grade security, and sustained performance under production load. Web and software development — Full-stack web platforms, SaaS products, and enterprise software systems engineered API-first, designed for long-term maintainability and organizational scale Proven Delivery: $62M+ raised across client platforms including Ifinca, IntegraLedger, Everledger, and TĒM 90% customer success score across enterprise engagements 15 years of enterprise software delivery Fortune 500 clients and high-growth startups across 25+ industry verticals 50–249 engineers spanning AI, blockchain, and software disciplinesLooking for work in Quality AssuranceLocated in Cook County, United States (+2)From €10,000 for Quality AssuranceWorked in Others (+11)Speaks English51-200 membersWEBLISH
4.9(27 reviews)World's first Platform Based Agency!
Weblish is a platform based agency officially launched in 2025 after seven years of building for small and midsize businesses. We unite design, content, search, and measurement in one place so founders work with one accountable partner and follow a calm path from idea to launch. Our roots go back to 2018, helping teams clean up their web presence, sharpen offers, and ship pages that feel fast, trustworthy, and easy to use. Those early projects shaped our culture. Fewer handoffs. Fewer vendors. Clear decisions. Steady delivery. Today we offer four connected services. Web Design and Development provides a modern and extensible foundation. Search Engine Optimization creates dependable discovery over time. Newsletter campaigns nurture relationships and bring customers back. Social Media Marketing keeps brands present and credible. Every engagement benefits from our shared design system, component library, and quality checks tuned for real devices and real users. The process is simple and calm. Discover and define. Write and design. Build and refine. Launch and improve. Reporting shows what is working and what to adjust next in plain language. If you want reliability without complexity, Weblish is a partner you can count on year after year.Looking for work in Quality AssuranceLocated in Sheridan, United StatesFrom €399 for Quality AssuranceWorked in Pets (+8)Speaks English, Dutch(+4)51-200 membersCOAX Software
4.8(10 reviews)Smart software solutions for travel, transport & logistics
COAX Software is your partner for smart software solutions for travel, transport & logistics. Since 2010, we’ve helped industry leaders design, build, and scale products that move markets forward. From sleek mobile apps to enterprise platforms, we deliver end-to-end development, team acceleration, and AI-driven solutions engineered to be reliable, scalable, and ROI-positive. Our integrated approach connects strategy, delivery, and growth—so your product ships faster, performs better, and compounds value over time. 🏆 Top-Rated Agency on Upwork 🏆 Experts Team with 100% Job Success Rating 🏆 16 000+ delivery hours on Upwork 🏆 Net Promoter Score 9.8/10 🏆 4.9/5 at Clutch.co What makes us different: - Deep Travel & Logistics Expertise We understand bookings, reservations, fleet management, customer loyalty, and compliance. We design solutions tailored to travel and transport operations—so your customers get seamless digital experiences. - AI & Automation at the Core From AI chatbots for customer care to predictive analytics for demand forecasting—and retrieval-augmented search for ops knowledge—we apply responsible AI practices to deliver measurable impact. - Flexible Partnership Models Choose what fits now and scales later: Discovery packages, fixed-scope acceleration, or dedicated squads. Need a quick MVP or expert consulting? We adapt to your goals and pace. - Proven Track Record 15+ years, hundreds of deliveries, and a team that’s 90% mid/senior. We’re known for on-time, on-budget execution and outcomes that compound. - Global Outlook, Remote DNA Rooted in Ukraine and delivering worldwide, we operate remote-first - combining nearshore accessibility with global reach. We’re certified and partnered: ISO 9001 - international standards of quality management ISO/IEC 27001 - international standards of information security AWS Certified Solutions Architect AWS Certified AI Practitioner Early Adopter Professional Scrum Master™ I Member of the techUK trade associationLooking for work in Quality AssuranceLocated in Ivano-Frankivsk, UkraineFrom €2,000 for Quality AssuranceWorked in E-commerce (+6)Speaks English, Ukrainian51-200 membersSumatoSoft
5(2 reviews)Your Strategic Partner for AI Digital Evolution
Top awardedSumatoSoft specializes in digitalizing businesses by combining stable, mission-critical software with advanced AI capabilities. We empower our clients to unlock new levels of automation while ensuring their AI systems remain secure, governed, and high-performing. Why Leading Brands Choose Us: Value-First Mindset: We identify the highest-impact AI use cases for your specific industry. Reliability at Scale: We build software that handles massive loads without breaking. Future-Proof Tech: We use only relevant, battle-tested AI and software frameworks. Deep Integration: We act as your internal tech department, diving deep into your business challenges. By becoming a true technological partner, we ensure that every line of code and every AI model contributes directly to your business efficiency and market leadership.Looking for work in Quality AssuranceLocated in Boston, United StatesFrom €10,000 for Quality AssuranceWorked in Media (+12)Speaks English51-200 membersDot Com Development
5(10 reviews)Building smarter digital products that launch faster and perform better.
Top awardedDot Com Development is a full-service Web, Mobile, Cloud, and AI development company delivering high-performance digital solutions for startups, SMBs, and enterprise clients. Since 2004, the company has specialized in transforming complex business challenges into intuitive, scalable, and secure applications that drive real results. With a business-focused approach and a proven record of on-time, on-budget delivery, Dot Com Development combines technical expertise with strong UX, product strategy, and long-term support to ensure every project succeeds beyond launch. Dot Com Development gets digital products to market up to 50% faster than competing firms, reduces development costs by as much as 40%, and delivers user experiences that generate 5x more user engagement. Our services include: ✅ Strategic Planning and Consulting ✅ UX/UI Design ✅ Prototyping and POC's ✅ Web Application Development ✅ Website Design and Development ✅ Mobile Application Development ✅ Artificial Intelligence Development ✅ eCommerce Development ✅ API Development and Integration ✅ Data and Analytics ✅ Cloud Development ✅ CRM / ERP Development ✅ DevOps / Cloud Services ✅ Support and MaintenanceLooking for work in Quality AssuranceLocated in Scottsdale, United StatesFrom €5,000 for Quality AssuranceWorked in Industrial Goods & Services (+11)Speaks English11-50 membersQuality Professionals (Q-Pros)
5(3 reviews)Your Trusted QA & Software Testing Partner.
RecommendedQuality Professionals (Q-Pros) is a leading independent software QA and testing service provider. Our Testing Center of Excellence (TCoE) has dramatically helped us industrialize the testing process to deliver higher quality at a lower cost. We offer QA Consultation, Testing Services, and Standards and Guidelines (ISO, TMMi, etc.). Our quality consultants use our proven methodology to define and build a tailored QA Framework based on the gap analysis findings. They help our clients achieve their goals and requirements to be certified by international buddies and implement best practices. We are also a one-stop-shop for all types of software testing. Our test engineers use manual and automation techniques to ensure 100% coverage of your application’s functional and non-functional requirements. Q-Pros was first found in 2009 in Houston, Texas, United States. In 2010, we started a low-rate offshore centre in Jordan to serve the US market, which later emerged into a testing centre of excellence with various practices and specialities. In 2012, we drafted our QA Function Methodology that was built in compliance with various international standards and global best practices that have impacts on promoting quality at an organization, and in 2013, we expanded our services to the GCC, we established our branch in the UAE and in 2019, we expanded to Saudi Arabia. With more than a decade of continuous growth, we have successfully worked with 150+ prestigious clients across different industries to help verify and validate the quality of their systems and applications. We have helped our clients promote quality, deliver defect-free software, cut rework costs and increase end-user satisfaction.Looking for work in Quality AssuranceLocated in Austin, United StatesFrom €1,000 for Quality AssuranceWorks in multiple industriesSpeaks English501-1000 membersSEVEN
5(7 reviews)🏆 Exceeding Your Expectations
Top awardedSEVEN is an IT partner with time-tested expertise in solving complex software challenges requiring narrow specialization . One of our biggest strengths is finding unique approaches and solutions for startups and businesses from a wide variety of industries, including crucial ones like healthcare & education. We take pride in our ability to find the technical solution and ensure that it leaves our clients room for growth and protects them from undesirable financial and technological consequences. We apply our extensive expertise to anticipate the needs of our clients and suggest improvements from a new, fresh angle. With SEVEN, our clients team up not just with tech-savvy people but with a group of experts who know how technology influences the business and how to make it align with sustained growth in the future.Looking for work in Quality AssuranceLocated in New York, United States (+1)From €3,000 for Quality AssuranceWorked in Retail (+14)Speaks English, Ukrainian51-200 membersLinnify
5(8 reviews)Simplifying life through innovation.
Top awardedLinnify is an awarded global technology partner , founded in 2016, with offices in Europe and the U.S. We empower visionary companies to accelerate digital product development . Faster, smarter, and more reliable than thought possible. From growing startups to established enterprises, we help turn bold ideas into scalable, user-centered digital solutions that drive measurable business impact. Our cross-functional teams deliver end-to-end capabilities in: - product strategy and validation - UX/UI design - custom software development (web and mobile) - AI and machine learning development - data engineering - cloud-native solutions - XR (AR/VR) applications - team augmentation Our validation-driven development approach ensures every product is aligned with actual market needs , minimizing risk while accelerating time-to-market. With a proven track record of building 80+ digital products across industries such as healthcare, logistics, education, automotive, and pharma , Linnify is present through strategic partnerships in major tech hubs like Austin, Berlin, and London. Our commitment to quality has earned us global recognition, including FT1000 ranking, Clutch Top 100, and ISO 27001 certification. Whether you’re seeking an AI development partner, looking to validate a product idea, or scaling your development capabilities, Linnify delivers with agility, transparency, and lasting impact through dedicated product teams. Let’s simplify life through innovation. Together.2 works in Quality AssuranceLocated in Austin, United States (+1)From €5,000 for Quality AssuranceWorked in Education (+9)Speaks English, Romanian11-50 membersNerdbug Limited
5(1 review)Your perfect Tech Partner
Nerdbug is a digital growth software company with proven expertise in maximizing business value through organizational strategy, customer development and growth techniques.Looking for work in Quality AssuranceLocated in Vinings, United States (+1)From €3,000 for Quality AssuranceWorked in Software & Computer Services (+7)Speaks English11-50 membersAttract Group
5(1 review)We deliver digital business strategy. Let's Build It Right.
Top awardedAttract Group is a team of professional web and mobile developers helping start-ups launch faster and established companies digitalize smoothly. Operating successfully since 2011, with headquarters in Amsterdam (Netherlands) and Las Vegas (USA). We don't just write code — we align every technology decision with your business goals, so each product serves a clear commercial purpose. Our team brings deep expertise across web development, design, project architecture, application development, and IT business consulting. We've built solutions across a wide range of industries — with particular strength in e-commerce/retail and healthcare , and proven experience in complex, highly regulated niches including aviation , media, and social networks . AI built into how we work: We integrate AI across our development process — AI-assisted coding and automated testing for faster, higher-quality delivery — and build AI-driven features like smart search, recommendations, and chatbots directly into client products. For clients, that means shorter timelines, lower development cost, fewer bugs in production, and smarter user experiences out of the box. Services: Custom CRM/ERP · Web platforms · E-commerce/retail · Mobile & cross-platform apps (Flutter) · UI/UX design · AI integrationLooking for work in Quality AssuranceLocated in Las Vegas, United States (+1)From €1,000 for Quality AssuranceWorked in Hospitals & Healthcare (+8)Speaks English51-200 membersAlluxi
5(6 reviews)Let's turn your idea into digital business.
Alluxi is a software company that has helped more than 100 B2B companies accelerate their product development growth with expert web and mobile development. Let us use our 10+ years of experience to help you unlock your startup's potential.Looking for work in Quality AssuranceLocated in Monterrey, MexicoFrom €1,000 for Quality AssuranceWorked in Industrial Goods & Services (+3)Speaks English, Spanish11-50 membersKPMG
(0 review)We have 227,000 outstanding professionals working together to deliver value in 146 countries
KPMG is a global network of professional firms providing Audit, Tax and Advisory services. We have 227,000 outstanding professionals working together to deliver value in 146 countries and territories. With a worldwide presence, KPMG continues to build on our successes thanks to clear vision, defined values and, above all, our people. Our industry focus helps KPMG firms’ professionals develop a rich understanding of clients' businesses and the insight, skills and resources required to address industry-specific issues and opportunities. The independent member firms of the KPMG network are affiliated with KPMG International Cooperative (“KPMG International”), a Swiss entity. Each KPMG firm is a legally distinct and separate entity and describes itself as such.Looking for work in Quality AssuranceLocated in San Francisco, United StatesFrom €1,000 for Quality AssuranceWorks in multiple industriesSpeaks English10001+ membersQASource
(0 review)QASource is a leading quality assurance services company that has helped startup & enterprise-level organizations for over 22 years with their testing needs.Looking for work in Quality AssuranceLocated in Pleasanton, United StatesFrom €1,000 for Quality AssuranceWorks in multiple industriesSpeaks English501-1000 membersShasta QA
(0 review)A US based, industry leading software QA testing company. Quality Assurance Testing to help your business excel above the competition.Looking for work in Quality AssuranceLocated in Chico, United StatesFrom €1,000 for Quality AssuranceWorks in multiple industriesSpeaks English51-200 membersRabIT Solutions
(0 review)Building the future of our clients with innovation and expertise
Top awardedRabIT Solutions is a UK-focused international software development company that also operates successfully across several European countries and America. Since 2014, we have been supporting our clients with custom software solutions that enhance operational efficiency, simplify processes, and deliver tangible business results. With innovative technologies and a tailored approach, we help our partners navigate digital transformation. Our services include custom software development, mobile and web application development, IT team augmentation, UX/UI design, as well as IT audit and strategic consulting. Our experience in the UK market enables us to deliver top-tier solutions to our clients, while we have also proven our expertise across various industries in Europe and America, including healthcare, finance, education, and technology. Our custom software development projects cover everything from concept to implementation, ensuring that every solution we deliver is scalable, secure, and user-friendly. Our mobile and web applications leverage cutting-edge technologies, while our UX/UI design services guarantee visually appealing and intuitive user experiences. With our IT team augmentation services, we quickly and flexibly provide experienced developers, QA testers, and project managers to enhance our clients' development capacity. Our ISO 9001 and ISO 27001 certifications reflect our commitment to quality and security. Our team consists of highly skilled professionals dedicated to delivering exceptional service. We work closely with our clients, ensuring transparent communication and flexible collaboration models. Whether it’s simplifying internal processes, implementing digital solutions, or driving business growth, we have the expertise to bring your vision to life. Trust us with your project and experience how your ideas become reality!Looking for work in Quality AssuranceLocated in Szeged, HungaryFrom €1,000 for Quality AssuranceWorked in Banking & Financials (+7)Speaks English, German(+1)51-200 members