Our React JS Development Services
Hire a senior React engineer in 1 week and get working features in the first sprint. In 2026, Belitsoft builds Next.js apps, React websites, and AI interfaces. 35-45% below UK and US rates. Clients from startups to Fortune 1000
Custom React JS Development
We use React 19+, TypeScript, and modern architecture to build tailored web and mobile apps. Our custom ReactJS development services deliver complex enterprise software, high-quality SaaS platforms, and B2C apps built for millions of users and sub-second response times.
React JS AI integration
Add AI features that work for your app so your users can do more. Our React developers use Transformers.js and WebLLM to run models in the browser, OpenAI and Anthropic APIs for agents & chatbots, and Hugging Face models for NLP, computer vision, and multimodal tasks.
We stream large AI responses over Server-Sent Events or fetch streams and buffer in-progress tokens in a local ref, then update Redux or Context state once the stream completes to prevent re-rendering issues with large AI responses.
Our team builds custom hooks or uses the Vercel AI SDK's hooks to make connecting AI services simple and fit them into your existing user experience and workflows.
React JS Web App Development
Launch production-ready web applications with our ReactJS website development services deployed on infrastructure with 99.9% uptime SLAs.
Our team develops responsive web apps (e-commerce storefronts, SaaS platforms, and server-rendered or hybrid sites) using Next.js (App Router with React Server Components).
React JS UI/UX Development
Improve engagement with intuitive UI/UX design. Our React developers build components that meet WCAG 2.2 AA, apply atomic design, and add micro-interactions with Motion or React Spring, turning Figma designs into production components.
We conduct user research, A/B testing, and heatmap analysis to measure behaviour and improve conversion rates.
React JS Enterprise App Development
Build enterprise applications with expert React app development services.
From internal dashboards and CRM systems to HR and operations platforms, we create secure, fully integrated solutions with role-based access control, controls aligned to SOC 2 requirements, and hardened application security.
Our solutions integrate with major enterprise techstack like Microsoft.
React JS Plugin & Component Development
Extend your app's functionality with custom ReactJS plugins, extensions, widgets and libraries to reduce future development time by 50%.
Our ReactJS developers build npm packages, white-label component libraries, Chrome and VS Code extensions, with comprehensive documentation, automated testing, and semantic versioning.
React JS Micro-Frontend Application Development
We build modular, scalable web apps using micro-frontend architecture.
Our stack includes React, Redux Toolkit, TypeScript, single-spa, and Module Federation (via Webpack, Rspack, or Vite).
Our React developers build independently deployable modules that let teams deliver in parallel, shorten release cycles, and keep runtime performance consistent across large-scale applications.
React JS Migration Services
Move your legacy applications to ReactJS without downtime and with the same features as before.
Our developers migrate Angular, Vue, and jQuery codebases and outdated frameworks, using gradual component by component transition and micro-frontend architecture.
During the migration, we optimise performance, reduce technical debt, and set up modern CI/CD.
React JS Consulting
Partner with a trusted ReactJS development company to plan, improve, and scale your digital products.
React JS consultants from Belitsoft do a full review of how fast your app renders, its bundle size, SEO, and accessibility.
Our implementation support, based on detailed recommendations, will help you make the changes.
React JS Support and Maintenance
Keep your ReactJS apps up 99.9% of the time using preventive monitoring, immediate bug fixing, and ongoing optimization.
Belitsoft's SLA guarantees responses within 2 hours for critical issues, plus monthly reports and quarterly security checks.
We keep your React app updated, including dependencies, and fast while you focus on growing your business
React.js Software Project Rescue Services
Our React consultancy rescues, stabilizes, and revives critical JavaScript and React projects and business-critical systems outsourced overseas, including systems running late due to unstable front-end code or slowed by unmaintainable React components.
Belitsoft works with technology leaders who urgently need a highly experienced React engineer when facing missed deadlines, bug-ridden code, or unexpected developer departures, or who have worked with another company that didn't meet expectations, have lost faith in their current agency, or want to replace an ineffective, poorly performing offshore vendor.
Our in-house React expertise and staff-augmentation options let us step in with intervention, take over, and deliver under pressure the results you need: recover your codebase (refactor messy or legacy code, improve code quality, reduce technical debt), fix performance, support, optimize, and scale troubled React projects.
After a one-day technical assessment of code quality, delivery consistency, infrastructure, and testing, we provide an independent plan based on the results of the audit to bring a stalled React project back on track and start execution immediately.
Who we are
IT software development company Belitsoft was founded in 2004. Since that time, we have been focusing on building and managing successful remote software engineering teams for each of our clients to develop enterprise-scale multi-user applications and elegant-yet-simple systems.
React JS Staff Augmentation Services
Expand your team with contracted React experts provided by Belitsoft, complementing in-house skills with specialized React and JavaScript expertise, including React frameworks (Next.js, Remix, Gatsby), state management (Redux), backend runtime (Node.js), styling (Tailwind CSS), and full proficiency in TypeScript. You keep control over the project, like having your own React experts, but without the overhead of hiring full-time staff. It’s better-suited for short-term needs like building a specific module or other surges in workload. Hiring a React developer from Belitsoft, you get not just a single skill but engineering consultants who deliver high-quality code.
Other React JS Development Models
Belitsoft stands as your dedicated React development company, providing you with the essential tools and comprehensive support required for successful service delivery in the digital market.
| NDA | Prior to project initiation, we sign an NDA with our customers to safeguard their confidential information. |
| Interactive UX/UI Design | We create user interfaces that respond to user interactions and provide a dynamic and engaging user experience. Our team utilizes React's architecture to create interactive UIs with state management and performance optimization. These dynamic and engaging interfaces respond effectively to user interactions, thereby attracting and retaining users, and ultimately resulting in improved conversions. |
| Architecture Building | We help build a solid architecture for your React application. The right architecture allows maintaining and scaling the app easier. Our team proficiently employs various state management libraries, such as Redux, MobX, and the Context API. |
| Agile React Development | We divide the work into "sprints" that last 1-4 weeks depending on the project. At the end of each sprint, we host a demo session where you can observe the functionality we've developed. |
| Software delivery | As the project nears completion, we conduct integration testing to ensure all the pieces work well together. The source code is transferred to the customer. |
| Software Support and Maintenance | Following release, our development team can continue to work on your software, improving and expanding its features. Partner with our ReactJS development company, and rest assured your project will be in expert hands! |
Ready to elevate your project with Belitsoft?
Frequently Asked Questions
A React development agency stands out when it can improve business results: shorten launch timelines, reduce long-term maintenance costs, improve front-end performance, and support scalable product growth, validated by relevant case studies, client references, and third-party reviews on G2, Gartner Peer Insights, or Clutch. Belitsoft's CIO, Dmitry Baraishuk, says standout React development agencies achieve this through product-first thinking, senior React 19 and Next.js engineering (focused on maintainable architecture & performance optimization), business domain knowledge, and close collaboration that adapts to the client's industry, use case, and product context, whether the project is a SaaS dashboard, fintech portal, marketplace, healthcare app, B2B platform, or enterprise migration.
When choosing a React development partner, look beyond UI component skills and assess whether the partner understands the product goals, user needs, and business constraints behind the interface, so their technical decisions support your long-term growth. According to Belitsoft's CIO, Dmitry Baraishuk, the right React partner can design scalable frontend architecture, write maintainable code, use linting and automated tests, improve performance, collaborate with backend engineers, work within design systems, and support product updates after launch.
Portfolio
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Our Clients' Feedback
Belitsoft has been the driving force behind several of our software development projects within the last few years. This company demonstrates high professionalism in their work approach. They have continuously proved to be ready to go the extra mile. We are very happy with Belitsoft, and in a position to strongly recommend them for software development and support as a most reliable and fully transparent partner focused on long term business relationships.
Global Head of Commercial Development L&D at Technicolor
They use their knowledge and skills to program the product, and then completed a series of quality assurance tests. We were working in an agile way with them. Belitsoft performed very well throughout our project. We are definitely looking at Belitsoft as a long-term partner.
Service Delivery Director at Crimson (United Kingdom)
I highly recommend Belitsoft for website design and development. We were up against a tight deadline to launch the project. The work was delivered on time and within budget! I will continue working with Belitsoft as a valued partner for our web development!
Program Administrator at UC Berkeley (United States)
We have worked with Belitsoft team over the past few years on projects involving much customized programming work. They are knowledgeable and are able to complete tasks on schedule, meeting our technical requirements. We would recommend them to anyone who is in need of custom programming work.
Main Partner at Hathway Tech (United States)
Belitsoft company is able to make changes instantly. One of our internal engineers has commented about how clean their code is. Belitsoft seems to know what they're doing, which I appreciate.
Co-Founder at HOWCAST MEDIA (United States)
It was a great pleasure working with Belitsoft software development company. New requirements and adjustments were implemented fast and precisely. We can recommend Belitsoft and are looking forward to start a follow-up project.
Head of Division at Fraunhofer FIT (Germany)
Belitsoft company has been able to provide senior developers with the skills to support back end, native mobile and web applications. We continue today to augment our existing staff with great developers from Belitsoft.
CEO at Apollo Matrix (United States)
Belitsoft company delivered dedicated development team for our products, and technical specialists for our clients' custom development needs. We highly recommend to use this company if you want the same benefits.
Managing Director at Key2Know A/S in 2012 (Denmark)
We approached BelITsoft with a concept, and they were able to convert it into a multi-platform software solution. Their team members are skilled, agile and attached to their work, all of which paid dividends as our software grew in complexity.
COO at Regenerative Medicine LLC (United States)
Having worked with Belitsoft as a service provider, I must say that I'm very pleased with the company's policy. Belitsoft guarantees first-class service through efficient management, great expertise, and a systematic approach to business. I would strongly recommend Belitsoft's services to anyone wanting to get the right IT products in the right place at the right time.
CEO at Moblers
If you are looking for a true partnership Belitsoft company might be the best choice for you. They have proven to be most reliable, polite and professional. The team managed to adapt to changing requirements and to provide me with best solutions. I strongly recommend Belisoft.
Director at ShowCast Limited (Germany)
I expected and demanded a lot of you at Belitsoft company, but you exceeded my expectations. You acted pro-actively, challenged me at the right moments. Thanks!"
CEO at Ticken B.V. (Netherlands)
We have been working for over 10 years and they have become our long-term technology partner. Any software development, programming, or design needs we have had, Belitsoft company has always been able to handle this for us.
Founder from ZensAI (Microsoft)/ formerly Elearningforce