All React Development Consultants 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.4 works in React DevelopmentLocated in Fairfax, United States (+3)From €5,000 for React DevelopmentWorked in Hospitals & Healthcare (+20)Speaks English, Ukrainian51-200 membersMTechZilla
5(8 reviews)Software Development Company for Product & Engineering Teams
Highly recommendedMTechZilla is an Offshore Software Development Company helping startups and product teams build their custom software products or extend their existing engineering team, without the cost and delays of local hiring. Over the years, we've partnered with companies across the US and Europe to deliver 40+ products spanning across web apps, mobile apps, AI-powered applications, cloud-native software on AWS, and legacy system modernization. Some of our clientele include Chicago based Hospitality startup (which grew from a 2-person startup to a 40-person company serving 700+ agencies), Swiss EV infrastructure platform and another Chicago based Short-term Furnishing company. Every developer we place is a pre-vetted senior developer, fully aligned to your project, and works in your timezone with a minimum 4-hour overlap. We run on agile sprints - biweekly demos, daily standups, transparent progress reporting. Your project kicks off within 7 to 14 days of signing. You own 100% of the code and product. Services: Web app development Mobile app development (iOS & Android) AI app development Cloud app development (AWS) Legacy modernisation UI/UX design Engagement Models: Software Development Outsourcing (full project delivery) Dedicated Development Team Staff Augmentation Core Stack: React, Next.js, Node.js, React Native, OpenAI, Anthropic, Gemini, Supabase, Vercel, LangChain, Vercel AI SDK, AWS Bedrock, Stripe, Figma, AWS Industries Served: Travel & Hospitality, Electric Vehicles, Real Estate, Renewable Energy, Education, InsuranceLooking for work in React DevelopmentLocated in 95131, United StatesFrom €10,000 for React DevelopmentWorked in Travel & Leisure (+2)Speaks English11-50 membersHOI Solutions
4.9(6 reviews)Top-of-the-line mobile app development and software services.
Highly recommendedHOI Solutions is a Custom Software Development Services Company, with years of experience in developing simple to complex software for businesses globally.Looking for work in React DevelopmentLocated in Newport Beach, United StatesFrom €1,000 for React DevelopmentWorked in Clothing & Accessories (+4)Speaks English51-200 membersKonstant Infosolutions
5(1 review)Creative. Innovative. Functional.
Top awardedAt Konstant Infosolutions, we are not just software developers; we are your strategic partners in harnessing the power of emerging technologies. With over two decades of excellence in delivering cutting-edge software solutions, we are poised to drive your enterprise into the future. We blend our creativity and technical expertise to create exquisite, sharp, customer-centric, ideal mobile apps, websites, and online stores using AI, IoT, ML, and Cloud Computing. Our skilled team of tech leads and experts delivers cost-effective, customized software solutions. With clients spanning the USA, Europe, Middle East, and Asia, our mission is to democratize digital services worldwide. Driving Innovation beyond Boundaries: Innovation is at the heart of everything we do. We are not content with simply meeting industry standards; we continuously push the boundaries of what's possible in app development (web/mobile). Our commitment to research and development ensures that we stay at the forefront of technological advancements, enabling us to deliver solutions that are not only relevant today but also anticipate the needs of tomorrow. This dedication to innovation sets us apart as your trusted partner in achieving digital excellence. > Established in 2003 > Headquarters in Jaipur, Rajasthan, India Business Solutions & Services We Provide For over 22 years, Konstant Infosolutions has been delivering top-notch IT solutions globally. We're your experienced partner, helping you stay ahead of competitors and seize opportunities. Custom Solution Development (App & Web): > Crafting tailored software solutions that redefine digital experiences and drive business excellence. > Elevating your business with bespoke mobile apps and web platforms designed to meet unique requirements. Dedicated Development Team: > Our dedicated teams bring unwavering focus and expertise to your projects, ensuring seamless integration and innovation. > Assembling seasoned professionals dedicated to your success, fostering synergy with your in-house operations. Staff Augmentation (Onshore & Offshore): > Empowering your projects with the right talent at the right time, whether onshore or offshore, for adaptability and productivity. > Flexibility to meet evolving project needs, maintaining optimal productivity and course for success. Enterprise Content Management System: > Streamline content management. > Enhance customer engagement with robust ECM systems. Business Intelligence Systems: > Unlock data-driven insights. > Custom BI solutions for informed decision-making. Business Process Automation: > Streamline operations for efficiency. > Automation for supply chain, finance, procurement, and more. Project Management: > On-time, on-budget project success. > Cutting-edge tools and top talent for project excellence. Cloud Consulting: > Scalable and efficient cloud solutions. > Achieve reliability, mobility, and efficiency. Emerging Technologies as Services: > AI/ML (Artificial Intelligence/Machine Learning): Harness the power of AI and ML to unlock data-driven insights, automation, and predictive capabilities, driving smarter decision-making. > AR/VR (Augmented Reality/Virtual Reality): Explore immersive technologies for innovative applications and enhanced user experiences that set you apart in the market. > Blockchain: Leverage the potential of blockchain for secure, transparent, and decentralized solutions that redefine trust in digital transactions. > IoT (Internet of Things): Connect and control devices to gather valuable data, enabling smarter and more informed business strategies. > Wearables: Develop wearable technology solutions for industries such as fitness, healthcare, and beyond, enhancing user engagement and health outcomes.Looking for work in React DevelopmentLocated in Palo Alto, United States (+2)From €5,000 for React DevelopmentWorked in Entertainment & Events (+1)Speaks English51-200 membersTechcronus Business Solutions
5(66 reviews)Your Digital Transformation Partner
Techcronus is a full-service digital agency helping businesses with innovative web, mobility, cloud, AI and data analytics solutions since 2013. Brands like Starbucks, Unilever, IKEA, Fererro trust us for their digital transformation needs. We have successfully delivered more than 500 projects across Retail/eCommerce, Manufacturing, Healthcare, Travel, Sports & Gaming, Finance and Education industries. Our business offerings include: - Business Applications (ERP, Accounting and CRM Solutions) - Custom Web and Mobility Solutions - Cloud Migration - Data and AI Solutions - Product Development & Support - Staff Augmentation Our technology expertise includes: Full-stack Development .NET, PHP, Angular, React, Node, React Native Ruby on Rails Python, OpenAI, and ChatGPT Azure and AWS Cloud Dynamics 365 ERP and CRM Power BI, Power Apps Please visit our portfolio to see our work samples: https://www.techcronus.com/case-studies/ D&B D-U-N-S Number : 91-519-0599 For free consultation regarding your software development needs, please write to us on business@techcronus.com or connect on Skype (techcronus). Our Global Locations: 1. Techcronus Business Solutions Pvt. Ltd. 821, Stratum @ Venus Ground, Nehrunagar, Satellite Road, Ahmedabad - 380015, Gujarat, India 2. Techcronus Inc. 3705 W Pico Blvd, Unit #606, Los Angeles, CA 90019, United States 3. Techcronus Australia Pty Ltd. 81-83 Campbell Street, Surry Hills, NSW 2010Looking for work in React DevelopmentLocated in Los Angeles, United States (+2)From €1,000 for React DevelopmentWorked in Media (+18)Speaks English, French(+3)51-200 membersChudovo OÜ
5(21 reviews)Complex Systems Implementation
Highly recommendedTop awardedChudovo is a custom software development company, focused on complex systems implementation. Customers rely on our expertise, appreciate transparency in time, budget, visibility of work progress, and our assistance in achieving their business objectives with high-quality solutions. Our teams follow best development practices and methodologies and apply their experience in such industries as healthcare, finance, e-commerce, logistics, telecommunications, and others. In our portfolio, we have over 190 successfully implemented web, mobile, desktop, cloud, embedded, and AI projects. With our commitment to innovation, we bring together cutting-edge technologies, visionary strategies, and creative minds to breathe life into your visions and ideas.7 works in React DevelopmentLocated in New York, United States (+4)From €3,000 for React DevelopmentWorked in Hospitals & Healthcare (+19)Speaks English, German(+2)51-200 membersWebisoft
4.9(15 reviews)Cutting-edge software development: blockchain, AI, ERP, and custom software.
Highly recommendedTop awardedWebisoft is a software development company based in Montreal (Quebec), with a second office in Miami (Florida). We specialize in custom software development, artificial intelligence, and Odoo ERP implementation, with complementary expertise in blockchain; we help both startups and established companies build scalable products. We understand the challenges entrepreneurs face when seeking top-tier developers to bring their visionary ideas to life. That's why we invite you to put us to the test before entrusting us with your project. If you believe your concept has the potential to revolutionize the market, let us demonstrate our expertise by transforming your dreams into an innovative digital product. To shape the future of digital experiences, make Webisoft your trusted partner.Looking for work in React DevelopmentLocated in Miami, United States (+1)From €1,000 for React DevelopmentWorked in Beverage (+12)Speaks French, English11-50 membersHorizon Labs
(0 review)Founder-led product teams that ship web, mobile, AI & embedded—fast and clean.
Horizon Labs is a founder-led product development agency with teams in California and Turkey. We help startups and SMB/mid-market teams build and modernize software across web, mobile, AI/LLM, and embedded/IoT. Clients bring us projects when they need a partner that can move fast without sacrificing quality—especially when there are messy legacy systems, integrations, or high reliability requirements. Typical engagements include MVPs, dealer/customer portals, Sharetribe marketplace customization, HIPAA-ready healthtech apps, IoT dashboards, and cloud/DevOps pipelines. Ways to work with us: discovery sprints, end-to-end delivery, or staff augmentation. We’re known for clear communication and direct access to senior engineers/founders—reflected in 5★ Clutch feedback for on-time delivery and strong collaboration.Looking for work in React DevelopmentLocated in Irvine, United StatesFrom €3,000 for React DevelopmentWorks in multiple industriesSpeaks English11-50 membersDebut Infotech
5(9 reviews)AI-Augmented Product Engineering Company
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 disciplines1 work in React DevelopmentLocated in Cook County, United States (+2)From €10,000 for React DevelopmentWorked in Others (+11)Speaks English51-200 membersForth
(0 review)Your partner for digital excellence
Forth is a digital engineering and creative agency. We build high-performance websites and digital products for brands that don't want average. We believe that great design and solid engineering must work together. Our team focuses on results and growth, delivering pixel-perfect work that helps startups and enterprises scale. We take ownership of the entire process, from initial branding and strategy to custom development and launch. Our Focus Areas Custom Web Development: - React, Next.js, Astro, and TypeScript. Design: - UX/UI, Product Design, and Brand Identity. Creative: - Motion design and high-end visual systems. Platforms: - Expert builds in Framer, Webflow, and Shopify. Performance: - Speed, SEO, and accessibility (WCAG). Why Forthgoing? We choose quality over quantity. When you work with us, you get senior-level execution and a transparent process. We build fast, secure, and accessible digital experiences that help your business grow without the overhead of a traditional large agency. Whether you are a startup looking to launch or scale, or an enterprise needing digital services, we got you covered. Ready to build something extraordinary? Visit our website to see our latest work or book a consultation. Get In Touch Inquiries: hello@forthgoing.comLooking for work in React DevelopmentLocated in Los Angeles, United StatesFrom €5,000 for React DevelopmentWorked in InternetSpeaks English11-50 membersPragmica
(0 review)Boutique design & software studio crafting bold brands and digital products in LA & NYC
Pragmica is a boutique, design-led software studio working between Los Angeles and New York City. We bring together brand strategists, product designers, and full-stack engineers to build distinctive identities, interfaces, and software for ambitious teams. From brand systems and marketing sites to web and mobile apps, AI-driven tools, and web3 experiences, we help clients turn complex ideas into clear, usable digital products that ship, scale, and stand out.1 work in React DevelopmentLocated in Los Angeles, United StatesFrom €1,000 for React DevelopmentWorked in Software & Computer Services (+1)Speaks English, Czech(+4)1-10 membersLionwood.software
5(8 reviews)Find the Perfect Solution
Lionwood.software specializes in crafting custom software solutions tailored to meet the unique needs of businesses across various industries. Our expertise spans software development, application creation, IT solutions, and consultancy services. We have extensive experience building WMS, ERP, TMS, and CRM platforms. Many projects focus on transforming legacy software into cloud-ready architectures that improve performance, usability, and maintainability. Our services include: - Software Product Development Services; - Product Design Services; - MVP Development Services; - Web App Development Services; - Mobile App Development Services; - AI Software Development Services.5 works in React DevelopmentLocated in New Castle County, United StatesFrom €5,000 for React DevelopmentWorked in Marketing & Advertising (+10)Speaks English, Ukrainian51-200 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 association9 works in React DevelopmentLocated in Ivano-Frankivsk, UkraineFrom €2,000 for React DevelopmentWorked in E-commerce (+6)Speaks English, Ukrainian51-200 membersGobiya
(0 review)Gobiya: Conversion Architecture, Semantic SEO & Web3 Infrastructure.
Gobiya is a premier Los Angeles-based digital agency specializing in Conversion Architecture, high-stakes SEO Strategy, and Web3 Infrastructure. Led by Senior Strategist Steve Martin, we bridge the gap between complex algorithmic patterns and human behavioral psychology to engineer scalable digital revenue engines. Established in 2009, Gobiya has spent over 15 years refining a data-centric methodology that prioritizes Semantic Search dominance and technical excellence. Our core expertise spans: Search Engine Optimization (SEO): Advanced entity validation, schema markup, and algorithmic alignment to dominate Google and Bing. Conversion Rate Optimization (CRO): Utilizing behavioral psychology to transform passive traffic into high-value leads. Blockchain & Web3: Custom smart contract engineering, tokenomics design, and dApp development across the PulseChain and Ethereum ecosystems. AI Integration: Deploying functional Generative AI and custom AI agents to optimize enterprise workflows without "AI slop." At Gobiya, we don't just build websites; we architect secure, high-performance digital economies. From multi-location dental practices to complex cryptocurrency platforms, we deliver measurable ROI through technical precision and strategic innovation.Looking for work in React DevelopmentLocated in Los Angeles, United StatesFrom €1,000 for React DevelopmentWorked in Home Services (+1)Speaks English1-10 membersEchoGlobal
5(2 reviews)★ Hire Top Remote Software Developers
Top awarded☂ ISO 27001 Certified Tech Talent Provider | ⚑ Eastern Europe & LATAM | ◉ Trusted by Fortune 500 Companies | ✔ 10+ Years of Experience | ✱ 1-Week Risk-Free TrialLooking for work in React DevelopmentLocated in Miami, United States (+4)From €10,000 for React DevelopmentWorked in Software & Computer Services (+8)Speaks English, Estonian(+3)11-50 membersMediaweb
4.8(4 reviews)Delivering exceptional digital experiences.
Mediaweb is a Portugal-based company specialized in designing and delivering end-to-end digital solutions, combining UX/UI design, software development, and AI-driven approaches. We partner with organizations to create intuitive, accessible, and scalable products that drive adoption and business impact. With strong expertise in product thinking, design systems, and modern development frameworks, Mediaweb actively contributes to skills development and talent upskilling across multidisciplinary teams. We support enterprises and SMEs in accelerating innovation, improving digital experiences, and building future-ready solutions.1 work in React DevelopmentLocated in Boston, United States (+1)From €3,000 for React DevelopmentWorked in Sports (+3)Speaks English, Portuguese11-50 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 React DevelopmentLocated in Vinings, United States (+1)From €3,000 for React DevelopmentWorked in Entertainment & Events (+7)Speaks English11-50 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.1 work in React DevelopmentLocated in New York, United States (+1)From €3,000 for React DevelopmentWorked in Software & Computer Services (+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.Looking for work in React DevelopmentLocated in Austin, United States (+1)From €5,000 for React DevelopmentWorked in Education (+9)Speaks English, Romanian11-50 membersEurisko
4.8(12 reviews)Pioneering digital innovation
Eurisko is a multi-national software development and consultancy firm based in UAE, Saudi Arabia, Lebanon, Cyprus and US. With more than 13 years of experience and hundreds of success stories, Eurisko offers services ranging from Mobile App Development, Enterprise Web Development and Artificial Intelligence, to Game Development, Mixed Reality, UI/UX Design and Smart Cities / IoT. To position our company as the pioneer of digital innovation in the region by creating excellence in our people and forging the digital future of our clients and partners. Our mission is to empower digital transformation by delivering cutting-edge solutions and world-class digital services to our clients & partners. Our goal is to reshape their success, providing them with a distinctive competitive advantage, unlocking limitless possibilities, and driving meaningful impact in their industry landscapes. Eurisko has a proven history of excellence in various domains and has been at the forefront of driving progress in Artificial Intelligence and Data Analytics for several years. Our proficiency in these areas allows us to harness state-of-the-art algorithms and data-driven insights, enabling us to deliver groundbreaking solutions to our clients. At Eurisko, our steadfast dedication to pushing the limits of innovation has firmly established us as a pioneering influence at the intersection of technology and creativity within the Middle East.Looking for work in React DevelopmentLocated in Santa Clara, United States (+2)From €1,000 for React DevelopmentWorked in Banking & Financials (+2)Speaks English, Arabic(+1)51-200 members