Hire the Best React.js Developers

👑𝗧𝗼𝗽 𝟭% 𝗘𝘅𝗽𝗲𝗿𝘁-𝗩𝗲𝘁𝘁𝗲𝗱 𝗧𝗮𝗹𝗲𝗻𝘁 | 𝗙𝘂𝗹𝗹 𝗦𝘁𝗮𝗰𝗸 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗲𝗿 | 𝗡𝗼𝗱𝗲.𝗷𝘀, 𝗣𝘆𝘁𝗵𝗼𝗻 & 𝗙𝗮𝘀𝘁𝗔𝗣𝗜 | 𝗪𝗲𝗯 & 𝗠𝗼𝗯𝗶𝗹𝗲 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗺𝗲𝗻𝘁 I am an expert Full Stack Developer with over 12 years of experience in building scalable, high-performance web and mobile applications. With a deep understanding of modern frameworks and technologies such as Node.js, Python, and FastAPI, I have consistently delivered innovative solutions to complex challenges, working across the full stack to build end-to-end solutions. As a top 1% Expert-Vetted Talent, I’ve been pre-screened by industry professionals and talent managers to ensure I meet the highest standards of technical expertise and quality. Throughout my career, I’ve had the privilege of working in dynamic, high-impact roles at some of the most renowned tech companies, where I gained extensive experience in leading engineering teams and architecting advanced systems. 𝗣𝗿𝗼𝗳𝗲𝘀𝘀𝗶𝗼𝗻𝗮𝗹 𝗘𝘅𝗽𝗲𝗿𝗶𝗲𝗻𝗰𝗲 1- 𝗦𝗲𝗻𝗶𝗼𝗿 𝗦𝗼𝗳𝘁𝘄𝗮𝗿𝗲 𝗘𝗻𝗴𝗶𝗻𝗲𝗲𝗿 | 𝗠𝗶𝗰𝗿𝗼𝘀𝗼𝗳𝘁 Spearheaded large-scale, cloud-based software systems that supported Microsoft’s enterprise solutions, focusing on security, performance optimization, and user experience. Led cross-functional teams to implement key features for Microsoft Azure and Office 365. 2- 𝗦𝗲𝗻𝗶𝗼𝗿 𝗦𝗼𝗳𝘁𝘄𝗮𝗿𝗲 𝗘𝗻𝗴𝗶𝗻𝗲𝗲𝗿 | 𝗙𝗮𝗰𝗲𝗯𝗼𝗼𝗸 Contributed to the core engineering teams responsible for Facebook’s backend services, handling millions of active users and optimizing real-time data processing. Played a pivotal role in building scalable APIs, improving system performance, and enhancing user experience. 𝟯- 𝗟𝗲𝗮𝗱 𝗦𝗼𝗳𝘁𝘄𝗮𝗿𝗲 𝗘𝗻𝗴𝗶𝗻𝗲𝗲𝗿 | 𝗛𝗲𝗹𝗹𝗼𝗴𝗼𝘃 𝗔𝗜 Directed a team to build AI-powered government solutions, improving efficiency and accessibility for public services. Collaborated with stakeholders to design innovative features while ensuring system reliability and scalability. 𝗞𝗲𝘆 𝗦𝗸𝗶𝗹𝗹𝘀 & 𝗧𝗲𝗰𝗵𝗻𝗼𝗹𝗼𝗴𝗶𝗲𝘀 1- Backend Development: Skilled in Node.js, Python, FastAPI, and Express.js for building scalable APIs and microservices. 2- Frontend Development: Experienced with React.js, Vue.js, and HTML/CSS for creating responsive web interfaces. 3- Mobile Development: Expertise in React Native and Flutter for cross-platform mobile app development. 4- Cloud & DevOps: Proficient in AWS, Azure, Google Cloud, Docker, Kubernetes, and CI/CD for scalable deployment. 5- Database Management: Strong in relational and NoSQL databases like PostgreSQL, MySQL, MongoDB, and Redis. 6- Agile & Leadership: Experienced in leading Agile teams, driving project success, and mentoring junior developers. 𝗙𝗹𝗲𝘅𝗶𝗯𝗹𝗲 𝗧𝗶𝗺𝗲𝘇𝗼𝗻𝗲 𝗔𝘃𝗮𝗶𝗹𝗮𝗯𝗶𝗹𝗶𝘁𝘆: I am comfortable working across a variety of time zones and can adapt to your team’s working hours, ensuring seamless collaboration no matter where you're based. Whether you need overlapping work hours or full-time availability, I am open to flexible arrangements that align with your team’s needs. 𝗛𝗶𝗴𝗵-𝗤𝘂𝗮𝗹𝗶𝘁𝘆, 𝗦𝗰𝗮𝗹𝗮𝗯𝗹𝗲 𝗦𝗼𝗹𝘂𝘁𝗶𝗼𝗻𝘀: I have a proven track record of building high-performance systems that scale efficiently, ensuring long-term stability and performance. I am committed to delivering robust solutions that meet business goals while optimizing user experience. 𝗙𝗮𝘀𝘁-𝗣𝗮𝗰𝗲𝗱 & 𝗥𝗲𝘀𝘂𝗹𝘁𝘀-𝗗𝗿𝗶𝘃𝗲𝗻: I thrive in fast-paced environments and understand the importance of meeting deadlines without compromising on quality. I take a results-driven approach to development, always focusing on delivering value quickly and effectively. 𝗣𝗿𝗼𝘃𝗲𝗻 𝗟𝗲𝗮𝗱𝗲𝗿𝘀𝗵𝗶𝗽 𝗮𝗻𝗱 𝗧𝗲𝗮𝗺 𝗖𝗼𝗹𝗹𝗮𝗯𝗼𝗿𝗮𝘁𝗶𝗼𝗻: Throughout my career, I’ve led multiple cross-functional teams, ensuring strong collaboration and clear communication at all stages of development. Whether working as a lead engineer or as part of a team, I take an active role in mentoring and guiding junior developers to achieve their full potential. 𝗜𝗻𝗻𝗼𝘃𝗮𝘁𝗶𝘃𝗲 & 𝗖𝗼𝗻𝘁𝗶𝗻𝘂𝗼𝘂𝘀 𝗟𝗲𝗮𝗿𝗻𝗲𝗿: I am passionate about staying ahead of the curve in an ever-evolving tech landscape. My curiosity drives me to constantly explore new tools, technologies, and techniques, so I can apply the best possible solutions to each project I undertake. 𝗟𝗲𝘁’𝘀 𝗕𝘂𝗶𝗹𝗱 𝗦𝗼𝗺𝗲𝘁𝗵𝗶𝗻𝗴 𝗚𝗿𝗲𝗮𝘁 𝗧𝗼𝗴𝗲𝘁𝗵𝗲𝗿! With expertise in Full Stack Development, cloud solutions, and Agile, I offer flexible timezone availability and a commitment to delivering high-quality, scalable applications, ready to collaborate and drive results. 𝗞𝗲𝘆𝘄𝗼𝗿𝗱𝘀: Full Stack Developer, Senior Software Engineer, Node.js, Python, FastAPI, React.js, Web Development, Mobile Development, Backend Development, Frontend Development, Full Stack Architecture, API Development, RESTful APIs, Microservices, Cloud Computing, AWS, Azure, Google Cloud, Docker, Kubernetes, CI/CD, Continuous Integration.

I'm a Design Engineer who builds premium, conversion-focused websites and dashboards in Next.js and React — the kind that load fast, rank on Google, and actually turn visitors into customers. I work the full path from Figma design to clean, production-grade code, so you get a polished interface and a maintainable codebase, not one at the expense of the other. Most developers either design or engineer. I do both, which means fewer handoffs, tighter execution, and a site that looks as good as it performs. Over 4+ years I've shipped 50+ production apps and earned Top Rated status with a 100% Job Success Score. What I work with: ⚡ Next.js 15 & React · Astro · Vue ⚡ TypeScript · Tailwind CSS ⚡ GSAP · Framer Motion · Scroll Animations ⚡ Figma → Code (UI/UX Design) ⚡ Sanity · Payload · MDX (CMS) ⚡ AI / Chatbot Integration ⚡ REST API Integration ⚡ SEO Optimization · Core Web Vitals ⚡ Vercel Deployment Industries I've built for: → SaaS & IT / Tech companies → Fintech & data platforms → E-commerce & jewellery brands → Real estate & property → Solar & energy → EdTech & online learning → Portfolios & personal brands → Company & agency websites → CV / analytics dashboards Core Web Vitals, sub-2s loads, mobile-first, and clean component architecture come standard on every build — not as add-ons. Available for fixed-price and hourly work. I respond within 24 hours. Let's build something fast, premium, and built to convert.

𝐌𝐨𝐬𝐭 𝐰𝐞𝐛 𝐚𝐩𝐩𝐬 𝐟𝐚𝐢𝐥 𝐛𝐞𝐟𝐨𝐫𝐞 𝐭𝐡𝐞𝐲 𝐬𝐜𝐚𝐥𝐞 𝐧𝐨𝐭 𝐛𝐞𝐜𝐚𝐮𝐬𝐞 𝐨𝐟 𝐭𝐡𝐞 𝐢𝐝𝐞𝐚, 𝐛𝐮𝐭 𝐛𝐞𝐜𝐚𝐮𝐬𝐞 𝐨𝐟 𝐬𝐡𝐨𝐫𝐭𝐜𝐮𝐭𝐬 𝐭𝐚𝐤𝐞𝐧 𝐝𝐮𝐫𝐢𝐧𝐠 𝐝𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭. I build full stack MERN applications and SaaS platforms the right way from day one clean architecture, AI features built in, and code that does not fall apart when your user count grows. No handoffs. No shortcuts. Just a complete product that works exactly the way you imagined it. With 7+ years of experience building full stack web apps and SaaS products, React frontend, Node.js backend, MongoDB database, clean APIs. The kind of developer who ships production-ready work, not prototypes. 𝐖𝐇𝐀𝐓 𝐈'𝐕𝐄 𝐒𝐇𝐈𝐏𝐏𝐄𝐃 ✦ 60+ full-stack web apps and SaaS products : zero to live ✦ Multi-tenant SaaS platform running 5,000+ monthly active users ✦ AI chatbots, smart automations & GPT-powered features integrated into real products ✦ MERN stack : React, Node.js, MongoDB, Express, Next.js, TypeScript & NestJS ✦ 500+ hours on Upwork | Top Rated Plus 𝐖𝐇𝐀𝐓 𝐘𝐎𝐔 𝐆𝐄𝐓 𝐅𝐮𝐥𝐥 𝐒𝐭𝐚𝐜𝐤 𝐌𝐄𝐑𝐍 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭 Solid, scalable web apps and SaaS products built the right way : clean code, no shortcuts. → React.js & Next.js frontend : fast, responsive UI your users actually enjoy → Node.js & Express backend : secure, performant, built to handle real user load → MongoDB & PostgreSQL : flexible architecture that grows with your product → REST & GraphQL APIs : clean integrations with any third party tool you need → Auth, payments & admin dashboards : a complete product, not just disconnected features 𝐀𝐈 𝐅𝐞𝐚𝐭𝐮𝐫𝐞𝐬 : 𝐁𝐮𝐢𝐥𝐭 𝐈𝐧𝐭𝐨 𝐘𝐨𝐮𝐫 𝐏𝐫𝐨𝐝𝐮𝐜𝐭 The part most MERN developers send you somewhere else for. I don't. → OpenAI, Claude & Gemini integrated directly into your product's architecture → AI chatbots that handle real user conversations inside your app, tested and ready to ship → Smart automations : workflows that run on your own data, no manual work needed → GPT-powered features : search, summarisation, recommendations & copilots → n8n, Zapier & Make automations that save your team hours every single week 𝐒𝐚𝐚𝐒 & 𝐌𝐕𝐏 𝐁𝐮𝐢𝐥𝐝𝐬 For founders who want a product that works from day one, not after six months of fixes. → Multi-tenant SaaS architecture : built to scale from 10 users to 10,000 → Stripe billing, subscription management & admin dashboard included from the start → MVP to production-ready : fast delivery without cutting corners or creating tech debt → Clean, documented code your team can own, maintain and build on after handoff 𝐓𝐄𝐂𝐇 𝐒𝐓𝐀𝐂𝐊 Frontend : React.js | Next.js | TypeScript | Tailwind CSS | Redux | Framer Motion Backend : Node.js | Express.js | NestJS | REST | GraphQL | WebSockets Database : MongoDB | PostgreSQL | Redis | Prisma AI & LLMs : OpenAI | Claude | Gemini | LangChain | LlamaIndex | Prompt Engineering Automation : n8n | Zapier | Make | GoHighLevel Cloud : AWS | Docker | Vercel | GCP | GitHub Actions CI/CD APIs & Auth : OAuth | JWT | Stripe | Twilio | Webhooks 𝐇𝐎𝐖 𝐈 𝐖𝐎𝐑𝐊 → Clear technical plan within 24 hours of hearing your idea → Agile delivery : working features every week, not just at the end → Slack, Zoom & Loom updates : you always know where things stand → One developer. No subcontracting. No handoffs to someone junior. → Clean, documented code your team can own long after the project ends 𝐖𝐇𝐎 𝐓𝐇𝐈𝐒 𝐈𝐒 𝐅𝐎𝐑 → Founders building a web app, SaaS or MVP who want AI built in from day one → Teams with an existing product who want AI features added without breaking what works → Businesses tired of hiring three different developers : frontend, backend and AI, I do it all 𝐒𝐞𝐧𝐝 𝐦𝐞 𝐲𝐨𝐮𝐫 𝐩𝐫𝐨𝐣𝐞𝐜𝐭. 𝐈'𝐥𝐥 𝐭𝐞𝐥𝐥 𝐲𝐨𝐮 𝐞𝐱𝐚𝐜𝐭𝐥𝐲 𝐡𝐨𝐰 𝐈'𝐝 𝐛𝐮𝐢𝐥𝐝 𝐢𝐭 𝐚𝐧𝐝 𝐰𝐡𝐚𝐭 𝐢𝐭 𝐰𝐢𝐥𝐥 𝐭𝐚𝐤𝐞. 𝗞𝗲𝘆𝘄𝗼𝗿𝗱𝘀: #Full-Stack Development #React #Node.js #JavaScript #TypeScript #Next.js #ExpressJS #RESTful API Development #GraphQL #MongoDB #PostgreSQL #MERN Stack Development #SaaS Development #Software Development #Web Application Development #API Integration #Front-End Development #Back-End Development #AI Chatbot #Conversational AI #AI Integration #AI Automation #Workflow Automation #Automated Workflow #Zapier #n8n #Make (Integromat) #GoHighLevel (GHL) #Stripe API #OAuth #Twilio API #Voice AI #Chatbot Development #SaaS MVP Development #Multi-Tenant SaaS Architecture #Admin Dashboard Development #Database Design #Payment Gateway Integration #Third-Party API Integration #Web Application Design #Scalable Web Applications

G'day! I'm Brett, a full-stack developer with 20+ years of hands-on experience in website design, development, mobile & desktop app development, hosting, AI-driven automation, and advanced Excel-based data and financial solutions. I went through all levels of verification by Freelancer staff providing you with reassurance that I am one of the top developers on Freelancer. I build reliable, scalable websites and applications, and I help businesses use AI in a practical way — automating repetitive work, improving customer experience, and making systems smarter without unnecessary complexity. My core tech stack includes PHP, JavaScript, Python, C/C#, and Java, along with modern frameworks, AI, APIs, and industry-standard tools. What I Do 1. Website Design Figma, PSD, and Adobe XD to Responsive Layouts using CSS, Bootstrap, Tailwind CSS 2. WordPress - Custom themes & plugins - ACF, Gutenberg, Elementor, Divi, Beaver Builder, Oxygen, WPBakery - Advanced custom forms (Gravity Forms, WPForms, Contact Form 7) 3. Website & Application Development 3.1 Next.js & Modern Web Apps - Next.js websites and applications - Server-side rendering (SSR) & API integrations - Secure, scalable architecture 3.2 Front-End - HTML, CSS, JavaScript, jQuery - React.js, Angular, Vue.js, MUI - Bootstrap, Tailwind CSS 3.3 Back-End - Node.js (Express) - PHP (Laravel, Symfony, CodeIgniter, Yii, Zend) - Python (Django, Flask, FastAPI) - C# (.NET, .NET Core) 3.4 Full-Stack - MERN & MEAN stacks - Secure APIs, authentication & integrations 4. AI & Automation - AI chatbots and assistants for websites & internal tools - OpenAI / LLM integrations (chat, content, data processing) - Smart search, filtering & AI-powered features 5. E-commerce - WooCommerce, Shopify, Magento, Prestashop, OpenCart - Custom features, integrations & performance optimisation 6. Mobile App Development (Flutter & React Native) - Cross-platform mobile app development for iOS and Android - API integration (REST, GraphQL, Firebase, etc.) - Push notifications, authentication, payments & third-party services 7. Desktop Application Development (Electron) - Cross-platform desktop apps for Windows, macOS, and Linux using Electron - Building modern, responsive desktop UI using HTML, CSS, JavaScript, React, and Node.js - API integrations for cloud-connected desktop tools 8. Excel & Finance Automation - Advanced Excel solutions (formulas, pivot tables, dashboards) - Financial modelling, forecasting & reporting tools - Data cleaning, transformation & analysis - Automation using Excel, Google Sheets & scripts (VBA / Python) - Integration with APIs, CRMs, and business systems for real-time reporting 9. Hosting & Deployment - Hosting setup, optimisation & security - Ongoing maintenance and support I'm online pretty much 24x7 so you're never going to wait long for an answer. I'm easy to chat to and extremely keen to achieve a 5/5 result for both sides, get in touch.

⭐ Top Rated | Top 10% of talent on Upwork ✅ 10+ years building SaaS and AI products | 75+ projects delivered ✅ AI that ships: RAG pipelines, AI agents, voice AI, LLM integration (OpenAI, Claude, Gemini) ✅ Full stack: Next.js, React, TypeScript, Python, Node.js, PostgreSQL, AWS ✅ Fintech, healthcare, construction, legal tech, and sales products I help founders, funded startups, and growing businesses turn ideas into production-grade AI products: MVPs, multi-tenant SaaS, AI agents, voice AI, and business process automation. I work as a technology partner, not a task-taker. My work usually starts with building an MVP from scratch, scaling a product with traction, rescuing an unstable platform, or adding AI without disrupting what already works. From there, I turn your goals, workflows, and budget into a clear plan: scope, milestones, architecture, and rollout. Over 10+ years I've delivered 75+ systems for US enterprises, a US government client, and founders across North America, Europe, the Middle East, and Africa. The metric I care about most: clients who come back for a second project. WHAT I DO: - AI SaaS & MVP builds: idea to deployed product with auth, billing, dashboards, and the AI layer - AI inside existing products: RAG, agents, and LLM features added without breaking what works - Voice AI: agents that answer calls, book appointments, and log to your CRM - AI automation: documents, follow-ups, and data entry handled by AI with human review - Rescue & ship: half-built MVPs refactored, hardened, and launched RECENT DELIVERIES: - Turnkey B2B SaaS platform for the construction industry, end to end - AI financial intelligence platform: open banking + accounting sync into one ledger - AI sales CRM: call transcription, follow-up automation, multi-tenant pipelines - RAG document platform for a US government client, every answer cited to source - AI voice agents for healthcare and sales, answering real patient calls daily HOW I WORK: - Scoped in milestones before code is written, so you know cost and timeline up front - I own the whole build: architecture, frontend, backend, AI layer, deployment, documentation - Full time on Upwork, overlapping US and European business hours Tell me a bit about what you are building. Even if we do not end up working together, I will point you in the right direction. Tech Stack: Frontend: Next.js, React, TypeScript, Tailwind CSS, React Native Backend: Node.js, Python, FastAPI, REST and GraphQL APIs, WebSockets AI and LLM: OpenAI, Claude, Gemini, LangChain, LangGraph, CrewAI, generative AI, machine learning, prompt engineering, function calling, model routing RAG and vector search: RAG pipelines, embeddings, semantic search, pgvector, Pinecone, document AI, OCR AI agents and automation: multi-agent systems, AI copilots, workflow automation, n8n, document extraction with review queues AI evaluation and reliability: evaluation sets, hallucination reduction, human-in-the-loop workflows Voice AI: Vapi, Retell, ElevenLabs, Deepgram, OpenAI Realtime, Twilio Databases: PostgreSQL, Supabase, Redis, MongoDB SaaS architecture: multi-tenant, tenant isolation, RBAC, Stripe billing, admin dashboards Cloud and DevOps: AWS, Docker, Vercel, CI/CD, monitoring Security and compliance: OAuth2, JWT, encryption, audit logs, HIPAA-aware builds, KYC/AML flows Integrations: Stripe, Plaid, open banking APIs, QuickBooks, Xero, Twilio, CRMs, ERPs Industries: AI SaaS, AI automation, AI agent development, FinTech, open banking, healthcare, B2B SaaS, startup MVPs, construction tech, legal tech, GovTech, sales & CRM automation, voice AI, e-commerce, recruiting

𝗛𝗘𝗬! 𝗚𝗟𝗔𝗗 𝗧𝗢 𝗛𝗔𝗩𝗘 𝗬𝗢𝗨 𝗛𝗘𝗥𝗘. ⭐ Top Rated on Upwork | 🥇 Certified Frontend Architect | 🤖 AI-Native, Human-Perfected Workflow I build AI-powered products, high-performance SaaS platforms, enterprise dashboards, Web applications, RAG systems, and modern React, Next.js, and Svelte frontends. Using senior engineering expertise and AI-accelerated workflows, I help companies move from idea to production faster without compromising quality, scalability, or performance. 𝗧𝗛𝗘 𝟮𝟬𝟮𝟲 𝗔𝗗𝗩𝗔𝗡𝗧𝗔𝗚𝗘: 𝗪𝗛𝗬 𝗛𝗜𝗥𝗘 𝗠𝗘? The market is flooded with generic, fully automated AI code that breaks under pressure. I bridge that gap. By utilizing elite AI orchestration ( IDE, CLI, Intelligent Agents, LLM models, MCP servers, skills files SKILL.md/AGENTS.md ) on top of deep architectural knowledge, I deliver ultra-fast iterations without sacrificing scalability, clean state management, or type safety. You get the speed of modern AI acceleration backed by a senior human engineer who ensures the code actually works. 𝗪𝗛𝗔𝗧 𝗜 𝗕𝗨𝗜𝗟𝗗 𝗙𝗢𝗥 𝗬𝗢𝗨 ➝ High-performance SaaS dashboards and admin panels ➝ AI-assisted MVPs launched fast and built to scale ➝ Pixel-perfect Figma to production implementations ➝ E-commerce and marketplace platforms ➝ Custom CRM, CMS, and client portals ➝ REST API and third-party integrations ➝ Real-time features using WebSockets, Firebase, and Supabase 𝗙𝗥𝗢𝗡𝗧-𝗘𝗡𝗗 𝗦𝗧𝗔𝗖𝗞 ✅ HTML5, CSS3, JavaScript (ES6+), TypeScript ✅ React.js, Next.js, Svelte, SvelteKit, Gatsby · Vite ✅ Tailwind CSS · Bootstrap · Styled-Components ✅ Shadcn UI · Material UI · Mantine · Daisy UI ✅ Redux · Zustand · Jotai · XState · React Query ✅ NX Monorepo · Turborepo · Webpack ✅ Git ( GitHub · Bitbucket · GitLab ) 𝗪𝗛𝗔𝗧 𝗬𝗢𝗨 𝗚𝗘𝗧 ➝ AI-accelerated delivery, faster output with zero shortcuts ➝ 95+ Lighthouse performance scores ➝ Clean, scalable, and maintainable code ➝ Pixel-perfect UI from any design file ➝ Full testing and documentation ➝ Daily progress updates so you always know where things stand ➝ Smooth handover and ongoing support 𝗖𝗟𝗜𝗘𝗡𝗧 𝗧𝗘𝗦𝗧𝗜𝗠𝗢𝗡𝗜𝗔𝗟𝗦 ★★★★★ "Working with Imran has been a great experience. He's skilled, hardworking, and always delivers top-quality results. My trusted developer." ★★★★★ "Perfect high quality work, he knows his area and you can work with him without any doubt." Great projects start with a conversation. I work closely with clients at every step your success is my success. Click "𝑰𝒏𝒗𝒊𝒕𝒆 𝒕𝒐 𝑱𝒐𝒃" or send me a message to discuss your project!