Hire the Best Jest Developers
Surat, India
✅ Top Rated Awarded by Upwork (Top 10%) ✅ Helped 38+ Global Clients ✅ 10,200+ Hours Worked ✅ Fast, Friendly & Attention to Detail ✅ Result Oriented ✅ Budget Friendly ✅ Free Consultation Hi, I’m Bhumi, I’m a full-stack web developer with 6+ years of experience working with startups, founders, and small businesses to build modern, scalable, and easy-to-use web applications. I build fast, responsive front-ends using REACT, NEXT.JS, AND TAILWINDCSS, and I’m equally confident in back-end with tools like NODE.JS, NEST.JS, SUPABASE, AND POSTGRESQL. I focus on writing clean, maintainable code, keeping communication clear and consistent, and making sure the work I do actually moves things forward for your business. 𝗪𝗛𝗔𝗧 𝗜 𝗢𝗙𝗙𝗘𝗥: ✅ Custom Web App Development ✅ React / Next.js Frontend ✅ Node.js / Nest.js Backend ✅ API Design & Integration (REST, GraphQL, Third Party Integrations) ✅ Database Design (SQL, NoSQL) ✅ Fixing Bugs, Refactoring Code ✅ Ongoing Support & Feature Additions 💬 𝗨𝗣𝗪𝗢𝗥𝗞 𝗖𝗟𝗜𝗘𝗡𝗧 𝗦𝗛𝗔𝗥𝗘𝗗 𝗧𝗛𝗘𝗜𝗥 𝗘𝗫𝗣𝗘𝗥𝗜𝗘𝗡𝗖𝗘 𝗪𝗜𝗧𝗛 𝗠𝗘: ★★★★★ 5.0 "Bhumi is one of the best developers I've had the privilege to work with. She is very professional and has excellent communication skills. She works very fast and is very efficient with the hours that she puts in. Her work is excellent, code is clean, and she gets the job done. I have zero complaints. If the task is within her skill set, hands down she is the best." - Roger R. ★★★★★ 5.0 "Only the best experience! Our project has advanced a lot with Bhumi's support." - Olga G. ★★★★★ 5.0 "Bhumi was an absolute pleasure to work with and a true asset to the project. Her work speed is exceptional; she consistently turned around tasks very quickly, regardless of their complexity. What really stood out was her fantastic attitude – she readily accepted feedback and handled revisions or changes (even last-minute ones from the client) professionally and without any pushback, simply focusing on getting the work done efficiently. Communication was excellent; Bhumi was always clear about her availability, so managing the workflow was effortless. I knew I could assign her tasks and trust they would be completed reliably and rapidly. Furthermore, she possesses a great eye for design. After establishing the initial look and feel, Bhumi demonstrated a strong ability to extend the design language to new components autonomously, maintaining aesthetic consistency beautifully and saving us considerable time on creating detailed mockups. She's incredibly easy to collaborate with, responsive, and highly skilled. I wouldn't hesitate to hire Bhumi again and give her my highest recommendation." - Ruben R. ★★★★★ 5.0 "We are happy with the Bhumi's work! I should admit that all the deliverables we get are of the high quality including solutions for quite complex tasks. Also what is very important for us is that Bhumi is responsible and stable, understands priorities and gives the result. Well done!" - Andrey O. ★★★★★ 5.0 "It's a pleasure for us to work with Bhumi! Tasks are always delivered on time with high standards. We also really appreciate her flexibility and communication skills!" - Anna P. 🎯 𝗠𝗬 𝗘𝗫𝗣𝗘𝗥𝗧𝗜𝗦𝗘 (𝗣𝗿𝗮𝗰𝘁𝗶𝗰𝗮𝗹, 𝗠𝗼𝗱𝗲𝗿𝗻, 𝗥𝗲𝗹𝗶𝗮𝗯𝗹𝗲): 𝗙𝗿𝗼𝗻𝘁𝗲𝗻𝗱 - React.js, Next.js, Vite - Chakra UI, MUI, Ant Design - Tailwind CSS, Shadcn - TypeScript, JavaScript 𝗦𝘁𝗮𝘁𝗲 𝗠𝗮𝗻𝗮𝗴𝗲𝗺𝗲𝗻𝘁 - Redux Toolkit, React Query, Context API - Zustand 𝗜𝗻𝘁𝗲𝗴𝗿𝗮𝘁𝗶𝗼𝗻𝘀 - REST APIs, GraphQL APIs, WebSockets - Stripe, Firebase, OpenAI, Auth0, Twilio 𝗕𝗮𝗰𝗸𝗲𝗻𝗱 - Node.js, Express.js - MongoDB, PostgreSQL, Redis - Supabase, Firebase, Serverless Functions 𝗖𝗹𝗼𝘂𝗱 & 𝗗𝗲𝗽𝗹𝗼𝘆𝗺𝗲𝗻𝘁 - Vercel, Netlify, AWS (EC2, S3, Lambda) - Docker, GitHub Actions, Railway 𝗔𝗜 & 𝗔𝘂𝘁𝗼𝗺𝗮𝘁𝗶𝗼𝗻 - OpenAI, Claude, Bolt.new, Cursor - Custom chatbots, task automation, AI-driven features 𝗧𝗲𝘀𝘁𝗶𝗻𝗴 & 𝗦𝗲𝗰𝘂𝗿𝗶𝘁𝘆 - Jest, Cypress - OAuth, JWT, Role-based Access 𝗣𝗿𝗼𝗷𝗲𝗰𝘁 𝗠𝗮𝗻𝗮𝗴𝗲𝗺𝗲𝗻𝘁 & 𝗧𝗼𝗼𝗹𝘀 - Jira, Trello, ClickUp, Asana - Git, GitHub, Bitbucket - Slack, Teams, Discord 💬 𝗙𝗥𝗘𝗘 𝗖𝗢𝗡𝗦𝗨𝗟𝗧𝗔𝗧𝗜𝗢𝗡: I offer a 𝗙𝗥𝗘𝗘 initial consultation, even if we don’t work together, you’ll leave the call with ideas or suggestions that can help. Ready to start? 𝗖𝗹𝗶𝗰𝗸 𝐈𝐧𝐯𝐢𝐭𝐞 𝐭𝐨 𝐉𝐨𝐛 OR 𝗦𝗲𝗻𝗱 𝗮 𝐌𝐞𝐬𝐬𝐚𝐠𝐞, and let’s explore how I can bring value to your project. Best Regards, Bhumi Full Stack Web Developer (React | Node.js | Next.js | TypeScript, Javascript)
- Jest
- Full-Stack Development
- Material UI
- React
- Next.js
- Redux
- MERN Stack
- Front-End Development
- HTML
- CSS
- Back-End Development
- Node.js
- ExpressJS
- SQL
- MongoDB
Chandigarh, India
I’m a Full-Stack, AI, Mobile, and Sharetribe Expert helping founders, startups, and growing businesses build scalable marketplaces, SaaS platforms, AI-powered products, mobile apps, booking systems, and e-commerce platforms. I work across the full product lifecycle: planning, architecture, front-end development, backend engineering, AI integration, mobile app development, payments, APIs, deployment, and ongoing product support. My focus is not just writing code, but building reliable products that are clean, fast, scalable, and easy for users to understand. As a Top Rated Plus freelancer on Upwork, I bring a mix of hands-on development, technical leadership, and project ownership. I can work independently as a senior developer, lead a technical team, or help turn early-stage product ideas into structured milestones and production-ready releases. What I Do AI Product Development • AI agents, AI assistants, and automation workflows • OpenAI, Claude, LangChain-style workflows, vector search, and RAG • AI-powered search, recommendations, chatbots, and content generation • AI integrations inside SaaS, marketplace, CRM, admin, and internal tools • Workflow automation using APIs, webhooks, and custom backend logic Full-Stack Web Development • React, Next.js, TypeScript, Node.js, NestJS, and Express • SaaS platforms, dashboards, admin panels, CRMs, booking systems, and e-commerce apps • PostgreSQL, MongoDB, Prisma, TypeORM, Redis, queues, and caching • REST APIs, webhooks, authentication, RBAC, and secure backend architecture • Performance optimization, scalable architecture, and maintainable codebases Mobile App Development • React Native and Flutter apps for iOS and Android • Cross-platform app architecture • Push notifications, deep linking, subscriptions, payments, and app releases • Mobile booking flows, marketplace apps, dashboards, and customer portals • App Store and Play Store deployment support Sharetribe Marketplace Development • 100+ custom Sharetribe marketplace builds • Sharetribe Flex customization, transaction processes, booking flows, and listing logic • Stripe, PayPal, wallet, escrow, offers, payouts, reviews, and subscriptions • Custom checkout, order flows, shipping, messaging, and admin features • Marketplace performance, UX improvements, integrations, and long-term support Frontend & UI Engineering • React, Next.js, TypeScript, Tailwind, Angular, Vue, Astro, Webflow, React Query • Responsive, polished, and conversion-focused interfaces • Design systems, reusable components, clean UX flows, and accessibility • SEO, SSR/ISR, Core Web Vitals, and performance improvements • Internationalization and multilingual platforms Backend, APIs & Integrations • Node.js, NestJS, Express, PostgreSQL, Supabase, MongoDB, Prisma, TypeORM • Stripe, PayPal, Apple Pay, Google Pay, RevenueCat, AWS S3, Twilio, SendGrid, Mailgun, Shippo, • • Google APIs, Zoom, Google Meet, Sendbird, and more • Webhooks, background jobs, automation, notifications, and third-party API integrations • Secure authentication, role-based permissions, rate limiting, and monitoring CMS, E-commerce & Admin Platforms • Strapi, custom CMS platforms, admin dashboards, and content workflows • Product catalogs, checkout flows, subscriptions, coupons, orders, and inventory logic • Vendor dashboards, customer portals, reporting, analytics, and moderation tools • Scalable content and data structures for growing platforms DevOps & Technical Leadership • Docker, CI/CD, AWS, Render, deployment pipelines, and production support • Agile/Scrum planning, technical documentation, milestones, and release management • Code reviews, architecture planning, team coordination, and delivery ownership • Clear communication, proactive updates, and structured execution Why Clients Hire Me Clients usually work with me when they need someone who can own the technical side of a product end to end. I can help define the technical approach, break work into milestones, build the product, manage integrations, guide other developers, and keep communication clear throughout the project. My strongest areas are AI products, full-stack web platforms, mobile apps, and complex marketplaces, and Sharetribe-based builds. Whether you need a new MVP, a custom marketplace, an AI-powered SaaS tool, a React Native or Flutter app, or a long-term technical partner, I can help you move from idea to launch with a reliable and structured process. If you’re looking for a full-stack partner who understands AI, mobile, marketplaces, and scalable product development, I’d be happy to help bring your product to life.
- Jest
- JavaScript
- Website Redesign
- Sharetribe
- React
- Ecommerce Website
- Stripe
- Next.js
- Google Tag Manager
- PayPal Integration
- Website Maintenance
- Apple Pay JS
- Website Performance Optimization
- IT Support
- Project Management
Kyiv, Ukraine
I'm a Senior Full-Stack Developer with 10 years of experience in building modern, scalable, and user-centric web applications. My core expertise lies in React, TypeScript, and Next.js on the frontend, with strong backend experience in Node.js and Ruby on Rails. Over the years, I've led frontend teams, mentored junior developers, and delivered complex projects from idea to production. I've worked across various domains—from SaaS platforms and FinTech applications to marketplaces, internal tools, and mobile-friendly websites. My code is clean, maintainable, and optimized for long-term scalability. I love collaborating with product and design teams to ship high-quality, impactful features that drive results. 🎨 Frontend Skills: React, TypeScript, Next.js, GraphQL, Chakra UI, Vue, SCSS, Figma ⚙️ Backend Skills: Node.js, Ruby on Rails, Express.js, GraphQL, REST APIs, PostgreSQL, MongoDB 🚀 DevOps & Tools: GitHub Actions, Heroku, DigitalOcean, Docker 🤝 Soft Skills: Team leadership, sprint planning, mentoring, tech consulting Let's build something great together!
- Jest
- TypeScript
- JavaScript
- React
- Next.js
- Ruby on Rails
- Node.js
- GraphQL
- Redux
- Mobx
- SEO Performance
- GSAP
- MongoDB
- ExpressJS
Jaipur, India
Top Rated full-stack developer — $70K+ earned, 1,643+ hours, 94% Job Success across 68 Upwork projects. I lead a 30+ person engineering team at Craxinno Technologies (founded 2017). We've shipped 100+ web apps, mobile apps, and digital products for founders, agencies, and enterprise clients worldwide. Our core stack: React, Next.js, Node.js, TypeScript, Express.js That's where we spend most of our time. We build fast, type-safe, SEO-friendly web applications, SaaS dashboards, internal tools, and marketing sites that hold up at scale. Our own site runs on Next.js + Node.js + TypeScript — we use what we ship. Technologies we work with daily (across 109+ in our stack): • Frontend — React, Next.js, TypeScript, JavaScript, Tailwind CSS, Redux, Zustand, HTML5, CSS3, SASS • Backend — Node.js, Express.js, NestJS, REST APIs, GraphQL, WebSockets • Databases — PostgreSQL, MongoDB, MySQL, Redis, Firebase, Supabase, Prisma • DevOps & Hosting — AWS, Vercel, Docker, CI/CD, GitHub Actions, Nginx • Mobile — React Native, Flutter, Swift, Kotlin • CMS & E-commerce — WordPress, Elementor Pro, Shopify (Liquid, custom apps) • Design — Figma, Adobe XD (UI/UX design, prototyping, design systems) • QA — Jest, Playwright, Cypress, Postman Services we offer 1. Web App Development — Next.js / React SaaS, dashboards, internal tools, marketing sites 2. Mobile App Development — React Native, Flutter, and native (Swift / Kotlin) builds 3. UI/UX Design — Figma-first design with pixel-perfect handoff to code 4. API & Backend Development — Node.js / Express / NestJS APIs, third-party integrations 5. E-commerce — Shopify storefronts and custom apps 6. WordPress — pixel-perfect Figma-to-Elementor Pro builds when CMS flexibility matters 7. DevOps & Maintenance — AWS/Vercel deployment, monitoring, ongoing support Why clients keep coming back • Strong, type-safe codebases — TypeScript end-to-end means fewer production bugs and easier handoffs • Pixel-perfect from Figma — your design is the spec, not a suggestion • Async-friendly delivery — Loom walkthroughs at each milestone, 0–4 hour response time • A full team behind one point of contact — you talk to me, but you get the bandwidth of a 30+ person studio • 5-star reviews across the board — clients consistently call out communication, speed, and clean code Let's talk Whether you have a Figma file, a half-built repo, or just an idea — send it over. I'll review it and tell you honestly whether we're the right fit and how I'd approach it. Thanks for reading, Nimish Taneja Founder, Craxinno Technologies
- Angular
- iOS Development
- MySQL
- TypeScript
- Node.js
- PHP
- Swift
- Next.js
- Sass
- Full-Stack Development
- Tailwind CSS
- HTML
- WordPress
- Front-End Development
- Website Redesign
Maipu, Argentina
I'm a Full Stack JavaScript Developer with 3+ years of experience building modern web applications from frontend to backend. I specialize in React, Next.js, Node.js, TypeScript, and PostgreSQL, creating scalable, maintainable, and production-ready solutions. Whether you need a SaaS application, dashboard, internal tool, AI integration, or custom web platform, I can help transform your ideas into reliable software. Full Stack Development I build complete web applications including: • Modern frontend development with React and Next.js • Backend APIs using Node.js and TypeScript • Authentication (JWT, OAuth) • Database design with PostgreSQL • REST API development and third-party integrations • Responsive and user-friendly interfaces • Performance optimization and scalable architectures Technical Skills Frontend • React • Next.js • TypeScript • Tailwind CSS • HTML5 / CSS3 / JavaScript Backend • Node.js • Express • PostgreSQL • Redis • REST APIs • Authentication Integrations • Stripe • OpenAI API • Email services • Webhooks • Third-party APIs What You Can Expect ✓ Clean and maintainable code ✓ Clear communication throughout the project ✓ Scalable and production-ready solutions ✓ Attention to performance and user experience ✓ Reliable delivery focused on your business goals I'm always interested in building products that solve real problems and create value for users.
- RESTful API
- Back-End Development
- Performance Optimization
- SaaS Development
- TypeScript
- JavaScript
- Node.js
- React
- NestJS
- Java
- Spring Boot
- MongoDB
- Supabase
- Docker
- AWS Lambda
Tuy Phuoc, Vietnam
I build secure, scalable web and mobile applications that solve complex business problems. With a focus on performance and user experience, I help startups and enterprises launch products that are ready for production and built to grow. How I Help You Succeed: - End-to-End Delivery: From architecture to deployment, I handle the full lifecycle so you can focus on business growth. - Secure Transactions: Experienced in building payment integrations and fintech solutions with strict security standards. - AI Integration: Implementing AI features like real-time recommendations, data processing, and smart automation. - Cross-Platform Efficiency: Developing once for web, iOS, and Android using React Native and Expo to save time and budget. Technical Expertise: - Frontend: React, Next.js, Vue.js, TypeScript, Tailwind CSS, HTML3, CSS5 - Backend: Node.js, Nest.js, Python, FastAPI - Mobile: React Native, Expo - Database & Cloud: PostgreSQL, MySQL, MongoDB, Supabase, AWS, Docker, Terraform Recent Project Highlights: - Fintech Payment Platform: Developed a secure payment gateway for electricity and TV subscriptions in Nigeria, handling high-volume transactions with reliability. - AI Travel Assistant: Built a mobile app using AI to recommend nearby tourist spots, suggest souvenirs, and provide navigation maps, enhancing the traveler experience. - Real-Time SaaS Monitoring: Delivered a monitoring system with sensor dashboards for geotechnical infrastructure. - AI SaaS Platform: Led frontend architecture for an AI-powered test case generation website with live streaming output. Scheduling CRM: Optimized a learning center CRM, reducing schedule conflicts by 30% and improving data retrieval by 35%. I prioritize clear communication, timely delivery, and code quality. Let’s discuss how I can help you achieve your project goals.
- Next.js
- React
- TypeScript
- Tailwind CSS
- Front-End Development
- Full-Stack Development
- JavaScript
- Front-End Development Skills
- Full Stack Development Skills
- Web Application
- Web Development
- Node.js
- AWS Lambda
- Amazon S3
- PostgreSQL
- Redux
- Python
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