Uditi Tiwari

I’m a Full Stack Developer with 3 years of experience owning end-to-end product development across frontend, backend, and integrations using the MERN stack. I’m proficient in JavaScript, React.js, Node.js, Express.js, and MongoDB, and I focus on building reliable, secure systems with strong performance. I thrive in Agile/Scrum teams where I can deliver measurable improvements from idea to production.

At Kazam EV Tech Pvt Ltd, I built scalable full-stack features with React.js, Node.js, Express.js, and MongoDB, including a Trip Planner module with real-time interactive maps and an EV charger booking flow. I designed and maintained REST APIs with a focus on performance optimisation, error handling, and API security, including token-based access and input validation. I also engineered MongoDB aggregation pipelines for complex reporting queries, improving data retrieval speed by 30%.

I integrated third-party payment gateways like PhonePe and Cashfree, ensuring secure, scalable transaction processing across both frontend and backend. I implemented frontend observability with Sentry for error tracking and monitored Core Web Vitals (LCP, CLS, FID) to improve performance across the EV charging map module. I maintain quality through GitHub-based workflows, branching, and code reviews in an Agile environment.

Previously at Zonsource IT Solutions Pvt Ltd, I built and maintained RESTful APIs and microservices with Node.js and Express.js, reducing API response times by 20%. I’ve also developed admin dashboard UIs in React.js with Redux, ensuring accessibility using semantic HTML, ARIA labels, and keyboard navigation for better usability. Overall, I bring a product mindset—clean code, safe APIs, observability, and thoughtful UX—to every delivery.