Jitendra S.

Senior Full-Stack Developer & Product Architect (12 Years) | React, Next.js, Node, GraphQL & AI Integrations Looking for a senior engineer who can take complex product requirements or Figma designs and turn them into fast, scalable, production-ready web applications? CLIENT FEEDBACK: "Jeet went the extra mile to make sure all project requirements were satisfied and worked tirelessly. Great communicator." ----- "Jeet's work is nothing short of perfection. Not only are the visual aspects impeccable, but the underlying code is also highly maintainable. ensuring that our project is scalable and easy to manage. His proficiency has significantly contributed to the success of our project, and it's a privilege to have such a skilled professional on our team." ---- "Jeet is probably one of the best freelancers one can find on Upwork. Obviously, he is highly talented. But, what I appreciated most was his perfect attitude in collaboratively working through product needs and getting on the same page especially when things were uncertain." I help SaaS founders, startups, and product teams build high-performance web applications, modern design systems, and AI-powered workflows that scale seamlessly. How I Can Help You - End-to-End Web & SaaS Development: Building modern SaaS platforms, admin dashboards, CRMs, and marketplaces from the ground up. - Frontend Architecture & Design Systems: Crafting clean, component-driven UI systems using React, Next.js, TypeScript, Tailwind CSS, and Shadcn UI. - Production-Grade AI & LLM Integrations: Integrating OpenAI, Anthropic, smart search, auto-summarization, and AI assistant interfaces directly into your React/Next.js stack. - Performance & Scalability: Refactoring legacy codebases, optimizing web vitals, and ensuring seamless GraphQL/REST API integrations. Core Tech Stack - Frontend: React, Next.js, TypeScript, JavaScript, HTML5/CSS3 - Backend: Node.js, Express, GraphQL, REST APIs - UI & Styling: Tailwind CSS, Shadcn UI, Material UI, Component-driven Architecture (Storybook) - State Management: Redux Toolkit, React Query / SWR, Context API - AI & LLM Tools: OpenAI API, Anthropic API, Vercel AI SDK, LangChain - Testing & Tools: Git, Webpack, Vite, CI/CD, Figma-to-Code Why Clients Choose to Work With Me - Product Mindset: I don't just write code; I think through user experience, architecture, and business logic to build maintainable software. - Pixel-Perfect & Accessible: High attention to detail when converting Figma designs into fast, responsive, fully accessible interfaces. - Clear & Proactive Communication: Fluent in English with extensive experience working alongside international async teams, CTOs, and product managers. Let’s Build Something Great Together Whether you need a full-stack engineer to build an MVP, a frontend architect to modernise your existing codebase, or an expert to add practical AI features to your web app, I’m ready to help. Click "Invite to Job" or message me directly to discuss your project! Jeet