Top Quality Assurance Agencies in the United States

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Quality Assurance United States

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All Quality Assurance Services in the United States

Attract Group
5
(1 review)
We deliver digital business strategy. Let's Build It Right.
Top awarded
Attract 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 integration
Looking for work in Quality Assurance
Located in Las Vegas, United States (+1)
From €1,000 for Quality Assurance
Worked in Hospitals & Healthcare (+8)
Speaks English
51-200 members
Nevina Infotech
5
(1 review)
Delivering Innovative Technology Solutions
Nevina infotech - We are renowned for our expert-level and high-tech custom web and mobile app development services in Brighton, MA, USA. We have a completely process-driven and extremely focused approach for all our services. From understanding the client requirements to ensuring that our services meet them exactly, we work with a systematic process. This is why companies from completely different industries like. The company is process-driven, targeting business-to-business clientele and providing end-to-end results. The company is focussing on challenging projects to accomplish with the listed technologies such as Magento, Laravel, iBeacon, IoT, trending technologies, and the mobile app development industry. Nevina Infotech serves different sectors of industries such as Food & Beverages, Manufacturing, Travel & tourism, marketplace projects (Amazon & Alibaba), and more. We are passionate, knowledgeable, and committed to providing our customers with the best possible services and solutions.
Looking for work in Quality Assurance
Located in Boston, United States
From €10,000 for Quality Assurance
Worked in Media (+4)
Speaks English
11-50 members
X2 Mobile
5
(6 reviews)
Your Partner in Bridging the Gap Between Ideas & Digital Products
We actively identify tech & product opportunities to transform your ideas into engaging and accessible digital experiences. Our story started more than 10 years ago in a small apartment, determined to create a unique team, we have turned now into a bunch of developers, designers, product experts and business operation specialists dedicated to helping businesses bridge the gap between their resources and the power of technology. We don't just build apps – we translate your expertise into engaging and effective solutions. Our customer-centric approach ensures clear communication and seamless collaboration throughout the entire development process. We believe in building long-term partnerships, and our success is measured by the success of our clients. With a proven track record of building impactful apps used by millions of students across the globe, we're confident we can help you achieve your goals.
Looking for work in Quality Assurance
Located in Wilmington, United States (+1)
From €1,000 for Quality Assurance
Worked in Education (+1)
Speaks English, Romanian
11-50 members
COAX 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 association
Looking for work in Quality Assurance
Located in Ivano-Frankivsk, Ukraine
From €2,000 for Quality Assurance
Worked in E-commerce (+6)
Speaks English, Ukrainian
51-200 members
Databay Solutions
5
(10 reviews)
Technology partner for companies seeking excellence
Recommended
Top awarded
🔥 Your ERP isn't performing. Your website isn't converting. Your data isn't talking to each other. Your team lives in Excel. And the big consulting firms offer you a €80,000 diagnosis and a beautiful PowerPoint. 📊 Databay Solutions does the opposite: we deliver working systems, websites that sell, and digital products that make a difference. We are an Odoo Silver Partner with 5 offices in Spain —Málaga, Córdoba, Almería, Cádiz, and Valencia— and a team that combines what almost no one else does: ✅ Odoo Enterprise: CRM, ERP, accounting, manufacturing, e-commerce, HR, VeriFactu. ✅ Websites, e-commerce, and custom software in React and Node.js. Real UX and design, not recycled templates. ✅ Data engineering, BI, and advanced analytics: data warehouses, executive dashboards, ETL, and data governance. ✅ AI in its two forms: agent-based with Claude (back-office automation) and classic (ML, scoring, prediction, computer vision). ✅ Industrial IoT: sensorization, plant data capture, and real-time platforms for the connected factory. ✅ Fractional CTO/CDO at the highest level, without the cost of a full-time C-level. 🚀 We don't just implement. We lead innovation with our own products: Inprove — IoT platform for predictive maintenance and industrial energy optimization. AI voice and WhatsApp phone system — Assistant that answers, qualifies, and resolves 24/7. ⚡ The big difference: a working prototype in the first few weeks. If you don't see value from the first milestone, there's no second invoice. It's that simple. 📈 We work with groups that generate between €5 and €100 million in revenue. Based in Andalusia and the Levante region, with projects across Europe. 📲 Stuck transformation, poorly implemented Odoo, a website that doesn't sell, or a major technical decision on the table? 30 minutes can save you 6 months. The first call is free. 🖥️ https://databay.solutions/ ✉️ info@databay.solutions 📞 +34 606 21 91 11
Looking for work in Quality Assurance
Located in Benalmádena, Spain (+1)
From €1,000 for Quality Assurance
Worked in Education (+17)
Speaks English, German(+1)
11-50 members
Quisitive
(0 review)
Top awarded
Quisitive is a premier, global Microsoft partner that harnesses the Microsoft platform and complementary technologies, including custom solutions and first-party offerings, to generate transformational impact for enterprise customers. Our Cloud Solutions business focuses on helping enterprises move, operate, and innovate in the three Microsoft clouds. Quisitive serves clients globally.
Looking for work in Quality Assurance
Located in Dallas, United States
From €0 for Quality Assurance
Worked in Education
Speaks English
5001-10000 members
Wolfpack Digital
4.5
(10 reviews)
Powerful Web and Mobile Apps Start-to-End
Top awarded
Webby Award winner in the Responsible AI category 🏆 and winner of the European Technology Awards 🇪🇺 for App Development, and most recently a Web Excellence Awards winner for 3D2Cut and LoadHub. With over 250 projects delivered across diverse industries, we believe in high-quality integrated systems that delight users through stunning visuals and a smooth experience 🌟. We aim to find the optimal balance between speed & quality and commit to building products that reach your business goals and can scale by covering all the stages. We call them Powerful Tech Products Start-to-End 🐺. By following the Build, Measure, Learn cycle, together with an agile development process, we work with startups & brands to achieve fast go-to-market and product success. We build platforms that scale - the websites and mobile apps that we've built now have over 10 million users per month 🚀 Keep users engaged - over 100k user ratings averaging over 4.6 stars 🌟 Foundation is key - by building solid architectures and clean code, our web platforms are robust and can scale fast 📈 Designs that users love - we've been featured in different media for Best Designed App by Fast Company, as well as featured several times in TechCrunch ✨ Earn the spotlight - some of our apps that have been featured in the AppStore 📱 Our services include: Product Strategy & Product Discovery UX/UI Design Mobile App Development Web development AI-native Development DevOps services (Azure / AWS) Project Management & Quality Assurance Launch Maintenance & Support Wolfpack Digital is an award-winning product development agency specialising in custom web and mobile application development, headquartered in Cluj-Napoca, Romania, with an office in Dublin, Ireland.
1 work in Quality Assurance
Located in Cluj-Napoca, Romania (+1)
From €5,000 for Quality Assurance
Worked in Entertainment & Events (+24)
Speaks English, Romanian
51-200 members
ZAPTA Technologies
5
(5 reviews)
Custom AI Software Design and Development
Recommended
ZAPTA Technologies is an AI driven software design and development company that partners with startups, enterprises, and funded ventures to deliver tailored digital solutions. We turn your ideas into scalable products, whether it’s building MVPs, enterprise-grade platforms, or assembling dedicated teams. We combine top talent of 500+ engineers, and collaborated with Fortune 500s including Meta, Walmart, Disney, Cisco and Nissan. Our expertise spans AI Transformation and Enablement, Custom Software Development, Web & Mobile App Development, UX/UI Design, Cloud Engineering, Dedicated Teams, and Software Consultation. We delivered 250+ projects with emerging technologies that are driving growth, efficiency, and long-term value for our partners.
Looking for work in Quality Assurance
Located in Lahore, Pakistan
From €1,000 for Quality Assurance
Worked in Education (+2)
Speaks English
201-500 members
Startbit IT Solutions Pvt. Ltd.
5
(32 reviews)
Designing The Future
Top awarded
Startbit IT Solutions Pvt. Ltd. an ISO 9001 and 27001 certified company, is a Global IT Services provider company with expertise in outsourced product development and custom software development focusing on web app development, mobile app development, and tailor-made solutions, etc. We consistently deliver offshore outsourcing solutions, quality software products, and solutions to start-ups, and mid-size and large enterprises worldwide. We have 2200+ satisfied clients worldwide. We develop web, windows, and mobile applications using all the latest technologies i.e. SalesForce, SAP, Microsoft Technologies (ASP.Net, C#, VB.Net, Azure, Entity/MVC framework, SSRS, Crystal Reports, etc.), MEAN Stack, Front-end, PHP, Laravel, React, MERN, WordPress, CodeIgniter, Shopify, Ruby on Rails, Android Development, iPhone development, Hybrid mobile app, etc. WHAT WE DO? Customized Software Development: We develop custom web and mobile app solutions from conceptualization to market launch covering your business needs. eCommerce Solutions: We have end-to-end e-commerce solutions with any kind of customization and store management consultancy. Staffing Solutions: We deploy our team on client’s projects in an offshore model to work with their local team/clients following all the legal compliance. Process Automation: We help our clients to automate their current manual processes with our industry-proven solutions to increase their overall productivity. Quality And Reliability: Team Startbit is focused and committed to quality output, we follow all the best practices to deliver it. We follow ISO and SOC compliance. Our clients rely on us in terms of data, processes, technologies, and deliverables, therefore we have been their back-end partners for many years and add value to it every year passing by. Startbit has a team of 85+ full-time resources and more than 50% of them are certified in various areas – Scrum Master, Azure, AWS, Shopify, etc. Our team members are available during USA, UK, and India business hours . Team Startbit has expertise in web application development, framework knowledge, project management tools, and all required documentation. We are a young, agile team with a passion for delivering superior software solutions, products, and customer services. Our team is well qualified and dedicated to work; most are certified by Microsoft and Sun Microsystems. Being a customer-driven company, Team Startbit constantly strives to provide the highest quality services to its customers.
Looking for work in Quality Assurance
Located in Jaipur, India
From €500 for Quality Assurance
Worked in Real Estate (+10)
Speaks English, Hindi
51-200 members
KPMG
(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 Assurance
Located in San Francisco, United States
From €1,000 for Quality Assurance
Works in multiple industries
Speaks English
10001+ members
Shift Left QA
(0 review)
Providing quality assurance services to digital agencies, clients, and vendors to ensure digital assets are compliant with today's operating systems, browsers, and devices.
Looking for work in Quality Assurance
Located in Chicago, United States
From €1,000 for Quality Assurance
Works in multiple industries
Speaks English
1-10 members
Azati Software Corporation
(0 review)
Get 100% matched IT experts
Accelerate your roadmap with our vetted developers, architects, designers, and project managers. Our commitment to excellence and unparalleled expertise has earned the trust of companies worldwide.
1 work in Quality Assurance
Located in Warsaw, Poland
From €1,000 for Quality Assurance
Worked in Art & Handcraft (+7)
Speaks English
201-500 members
Iterators LLC
(0 review)
99% of our customers are also returning customers
Iterators LLC is an SBA-certified Woman-owned small business offering software testing services and PDF remediation services. We can work with any industry, including federal, state, and local governments, as a prime contractor or subcontractor. 99% of our customers are also returning customers. Our in-house trained software testers are ISTQB certified and Section 508 certified Trusted Testers. Located in Boston, read The Boston Globe and discover our competitive advantage. As stated in the Harvard Business Review, "...[results suggest] that the organization's neurodiverse testing teams are 30% more productive than the
Looking for work in Quality Assurance
Located in Boston, United States
From €1,000 for Quality Assurance
Works in multiple industries
Speaks English
11-50 members
Softude Infotech Pvt Ltd
(0 review)
We Innovate, We Develop, We Care
Top awarded
Softude is a top AI agent development company trusted by enterprises across the USA and globally to build intelligent, autonomous AI systems that eliminate manual bottlenecks, accelerate decisions, and scale operations without adding headcount. Our AI agent development services cover the full lifecycle, from strategy and architecture to deployment and optimization. We build multi-agent systems, LLM-powered workflows, conversational AI, and generative AI solutions that integrate seamlessly into your existing processes across healthcare, BFSI, logistics, retail, and manufacturing. Beyond AI, we deliver high-demand technology services including custom web and mobile app development, cloud application development on AWS and Azure, DevOps, cybersecurity consulting, e-commerce development, digital transformation, RPA consulting, and staff augmentation. With 3700 plus projects delivered, 1100 plus clients onboarded, and Fortune 500 companies among our partners, we bring proven scale and delivery confidence to every engagement. Backed by CMMI Level 5 appraisal, ISO 9001 and ISO 27001 certifications, and 20 plus years of enterprise software experience, our processes are built for reliability, security, and measurable outcomes. We are the AI and technology partner for businesses ready to deploy solutions that work at scale.
Looking for work in Quality Assurance
Located in Indore, India
From €1,000 for Quality Assurance
Worked in Technology Hardware & Equipment (+13)
Speaks English, Hindi
201-500 members
Spirent
(0 review)
Spirent is the leading global provider of automated testing and assurance solutions for networks, security & positioning
Spirent is the leading global provider of automated testing and assurance solutions for networks, security and positioning.
Looking for work in Quality Assurance
Located in Calabasas, United States
From €1,000 for Quality Assurance
Works in multiple industries
Speaks English
1001-5000 members
ArtX Pro
5
(7 reviews)
Top Digital Marketing Agency in Karachi, Pakistan
Recommended
ArtX Pro helps businesses grow with effective digital marketing strategies that deliver measurable results. We work with startups, growing companies, and established businesses to increase visibility, attract the targeted customers, and achieve long term growth. Comprehensive Digital Marketing Services 1. Digital Marketing Services We create customized digital marketing strategies that help businesses grow. Our services include PPC, influencer marketing, performance marketing, and user-generated content. 2. SEO Services We improve your search visibility and help customers find your business online. Our SEO services include Generative Engine Optimization (GEO), Search Engine Marketing, SEO content writing, eCommerce SEO, and GMB optimization. 3. Social Media Marketing Services We help businesses grow through social media marketing with engaging content, targeted advertising, and customized strategies that increase brand awareness and engagement. 4. Website Development Services We create fast, mobile-friendly, and user-friendly websites that deliver a smooth experience on every device. 5. E-Commerce Management Services We help businesses manage and grow their online stores. Our services include Amazon, Daraz, Noon, and Shopify store management, marketplace optimization, product listing, and creative design. Why Choose ArtX Pro for Your Business? Results Driven Strategies: We create strategies that increase visibility, generate quality leads, and support long term business growth. AI Powered Marketing: We use AI powered insights to improve campaigns, understand customer behavior, and achieve better results. Customized Solutions: We create effective customized strategies based on your business goals, industry, and target audience. Experienced and Reliable Team: We work closely with our clients, communicate clearly, and deliver measurable results through every stage of the project. Ready to grow your business online? Let’s build digital solutions that deliver measurable results.
Looking for work in Quality Assurance
Located in Karachi, Pakistan
From €1,000 for Quality Assurance
Worked in Automotive (+3)
Speaks English, Arabic(+3)
51-200 members
Alluxi
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 Assurance
Located in Monterrey, Mexico
From €1,000 for Quality Assurance
Worked in Industrial Goods & Services (+3)
Speaks English, Spanish
11-50 members
QASource
(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 Assurance
Located in Pleasanton, United States
From €1,000 for Quality Assurance
Works in multiple industries
Speaks English
501-1000 members
Agilitec IT
(0 review)
OUR COMMITMENT CONTINUOUS IMPROVEMENT We are committed to getting you the best results. We learn the ins and outs of your business to align your goals with IT solutions. We take an agile approach, so as your business changes and grows, we can continue to innovate with you. We are never satisfied with the status
Looking for work in Quality Assurance
Located in Las Vegas, United States
From €1,000 for Quality Assurance
Works in multiple industries
Speaks English
11-50 members
Shasta 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 Assurance
Located in Chico, United States
From €1,000 for Quality Assurance
Works in multiple industries
Speaks English
51-200 members
RabIT Solutions
(0 review)
Building the future of our clients with innovation and expertise
Top awarded
RabIT 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 Assurance
Located in Szeged, Hungary
From €1,000 for Quality Assurance
Worked in Marketing & Advertising (+7)
Speaks English, German(+1)
51-200 members
OutworX Corporation
(0 review)
OutworX provide best in class Mobile App Development, eCommerce Development, Quality Assurance and resource management services to it's clients. Contact Us.
Looking for work in Quality Assurance
Located in Hazratpur Wajidpur, India
From €1,000 for Quality Assurance
Works in multiple industries
Speaks English
201-500 members

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