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I'm Rajat, a Full Stack Engineer specializing in backend systems and end-to-end feature ownership for startups. I build production-ready APIs, data models, and cloud infrastructure using Node.js, TypeScript, PostgreSQL, and AWS, while staying comfortable across the stack with React and React Native—from schema design to deployed UI. I enjoy solving complex problems, shipping reliable software, and enabling teams to reduce manual workloads through automation and thoughtful architecture.…I'm Rajat, a Full Stack Engineer specializing in backend systems and end-to-end feature ownership for startups. I build production-ready APIs, data models, and cloud infrastructure using Node.js, TypeScript, PostgreSQL, and AWS, while staying comfortable across the stack with React and React Native—from schema design to deployed UI. I enjoy solving complex problems, shipping reliable software, and enabling teams to reduce manual workloads through automation and thoughtful architecture.

Rajat Choudhary

Full Stack Developer, Web Developer, Front-End Developer, +4

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I'm Rajat, a Full Stack Engineer specializing in backend systems and end-to-end feature ownership for startups. I build production-ready APIs, data models, and cloud infrastructure using Node.js, TypeScript, PostgreSQL, and AWS, while staying comfortable across the stack with React and React Native—from schema design to deployed UI. I enjoy solving complex problems, shipping reliable software, and enabling teams to reduce manual workloads through automation and thoughtful architecture.…I'm Rajat, a Full Stack Engineer specializing in backend systems and end-to-end feature ownership for startups. I build production-ready APIs, data models, and cloud infrastructure using Node.js, TypeScript, PostgreSQL, and AWS, while staying comfortable across the stack with React and React Native—from schema design to deployed UI. I enjoy solving complex problems, shipping reliable software, and enabling teams to reduce manual workloads through automation and thoughtful architecture.

Available to hire

I’m Rajat, a Full Stack Engineer specializing in backend systems and end-to-end feature ownership for startups. I build production-ready APIs, data models, and cloud infrastructure using Node.js, TypeScript, PostgreSQL, and AWS, while staying comfortable across the stack with React and React Native—from schema design to deployed UI.

I enjoy solving complex problems, shipping reliable software, and enabling teams to reduce manual workloads through automation and thoughtful architecture.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Language

English

Fluent

Work Experience

Software Development Engineer at Linear

March 1, 2023 - November 12, 2025

Built the complete React Native app from scratch with Expo, owning project setup, UI/UX design, development, and testing. Delivered secure token storage, Expo Router navigation, and high-performance UI using Native Wind. Designed and shipped an in-app notification system using AWS DynamoDB to deliver progress updates, reminders, and feature alerts. Engineered a network-first caching strategy with Service Workers, decreasing load time by 7% and reducing data fetch failures by 13% in production. Automated certificate generation with React + AWS S3 resulting in 7000+ monthly downloads and bulk onboarding with PapaParse, streamlining user management. Led development of an enterprise admin dashboard (PostgreSQL, Node.js, TypeScript, React) and a full UI/UX rebuild (Tailwind, MUI, Recharts), reducing administrator workflows by 70% and surfacing actionable KPI dashboards.

Software Engineer, Intern at Infino

December 1, 2022 - December 1, 2022

Contributed to a fintech MVP using React, Material-UI, Node.js/Express, and MongoDB, achieving 43% test coverage and helping secure the company’s first B2C client. Developed a payment reconciliation dashboard with MUI Data Grid and multi-gateway integration, reducing reconciliation time by 17%. Engineered automated fee calculation across UPI, cards, and net banking using Razorpay and Cashfree SDKs, reducing discrepancies and driving measurable cost savings.

Software Engineer, Intern at Nagarro

April 1, 2022 - April 1, 2022

Collaborated on an internal enrollment platform using Java, Spring Boot, and HTML/CSS, improving accessibility and navigation efficiency for staff. Assisted in implementing Spring Security controls and optimizing database queries, contributing to enhanced system security and a 5% faster query response time.