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 Beverage (+20)Speaks English, Ukrainian51-200 membersUASOFTDEV
5(3 reviews)Founder-led staff augmentation of AI-Ready Senior Developers and Dedicated Teams in 60 hours
UASOFTDEV is a founder-led staff augmentation of AI-Ready Dedicated Teams and Senior Software Engineers for small-mid companies. We believe AI doesn't replace experienced engineers. It makes the right engineers dramatically more effective. That's why every developer we provide uses AI as part of their daily workflow with tools like Claude, Cursor and GitHub Copilot, while all architecture, technical decisions, code reviews and production releases remain under experienced human ownership. Main engagement models. Staff Augmentation for companies looking to extend their existing engineering team with senior talent, and AI-Ready Dedicated Teams for businesses that need a complete delivery team with technical leadership capable of owning products, features or entire engineering initiatives. Every engagement is led directly by our Founders. Aleksey, CEO, works closely with clients to understand product goals, business priorities and team dynamics. Oleksandr, CTO, personally evaluates every engineer for technical excellence, communication and problem-solving skills. Our work is built around four core values: quality, clarity, transparency and a personalized approach to every client engagement. The process is simple: after a discovery call, we match engineers to your technology stack, product domain and culture, present a CTO-vetted shortlist and run contracting alongside onboarding. Staffing typically happens within 60 hours. Today, our teams support startups and product companies across Europe, UK and North America. UASOFTDEV's track record includes a 97% first-candidate acceptance rate, a 95.65% first-match success rate and an average client engagement of over 13 months. Founders respond to critical issues within two working hours. Whether you need one senior engineer or an AI-Ready Dedicated Team, our goal is the same: help you ship faster with engineers who communicate clearly, contribute from day one and solve complex problems independently.Looking for work in React DevelopmentLocated in New York, United States (+4)From €3,000 for React DevelopmentWorked in Hospitals & Healthcare (+3)Speaks English11-50 membersMind Studios
5(4 reviews)Long-Term Technology Partner for Growth-Stage and Mid-Market Companies
RecommendedFounded in 2013, Mind Studios is a custom software development company working with growth-stage and mid-market businesses across the US, UK, Europe, and MENA. The portfolio spans logistics platforms, real estate marketplaces, healthcare systems, and fitness ecosystems - operationally critical products built for companies where technology is central to how the business runs. The team engages at the architecture stage, before the critical decisions get locked in. Business analysis, technical scoping, and honest pushback on briefs that won't hold up at scale are standard. The goal from day one is a system that doesn't need to be rebuilt in two years. What distinguishes Mind Studios is what happens after launch. Scaling infrastructure, iterating on features, extending systems as the business grows - this is where most of the value gets built, and where long-term client relationships form. The average engagement runs over two and a half years. Many go considerably longer. 100+ specialists. 13 years in business. 70% client retention rate.Looking for work in React DevelopmentLocated in Mantua, United States (+3)From €20,000 for React DevelopmentWorked in Logistics & Supply Chain (+5)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 Others (+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 Utilities (+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 Sports (+18)Speaks English, French(+3)51-200 membersChudovo OÜ
5(23 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(19 reviews)Custom software, AI, ERP, and blockchain solutions built around how your business actually works
Highly recommendedTop awardedWebisoft is a Montreal-based software development company with a second office in Miami, Florida. Since 2016, we've built custom software, AI solutions, and Odoo ERP implementations, with complementary blockchain expertise, for startups and established companies across industries. We're an official Odoo Partner and an AWS Partner Network member, and we're SOC 2 certified and HIPAA compliant. Whether you need a one-off build or an ongoing development partner, we'll scope it with you and deliver something that scales. Not sure we're the right fit? Put us to the test before you commit. Bring us your concept, and we'll show you how we work.Looking for work in React DevelopmentLocated in Miami, United States (+1)From €1,000 for React DevelopmentWorked in Publishing (+18)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 Hospitals & Healthcare (+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 membersAkveo
5(1 review)Here to Build
Akveo is an international software development firm that creates innovative digital solutions to help businesses grow. Specializing in custom software, low-code/no-code platforms, and UI/UX design, we empower companies of all sizes to turn their concepts into scalable, high-performing applications. As a certified Retool development partner and React Native expert (https://www.akveo.com/services/mobile-application-development/react-native), Akveo has successfully completed 500+ projects across sectors like finance, healthcare, eCommerce, and EdTech. Our team of experienced software engineers, designers, and business analysts works collaboratively to deliver top-quality solutions. From cross-platform mobile development to MVP creation and AI-driven automation, we are dedicated to providing exceptional results that surpass client expectations.6 works in React DevelopmentLocated in Austin, United States (+2)From €1,000 for React DevelopmentWorked in Insurance (+6)Speaks English, German(+2)51-200 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 Software & Computer Services (+7)Speaks English11-50 members