Priyansu Chowdhury

Full Stack Developer

Kolkata, India 2+ yrs exp 84 · Excellent

About

Full-stack developer with 2+ years building production backends and UIs across enterprise ERP, dealership SaaS, and fintech, primarily in Spring Boot, Next.js, and Node.js. Shipped integrations against WhatsApp Business API, Tally ERP, Plaid, and Razorpay on live systems. Reduced API p95 latency by 25% via schema and query rewrites; maintained 99% uptime across 8+ concurrent client deployments.

Skills & Expertise (35)

React Advanced

8.0/10

Years Exp

JavaScript Advanced

7.5/10

Years Exp

Next.js Intermediate

7.0/10

Years Exp

Node.js Intermediate

7.0/10

Years Exp

Typescript Intermediate

6.5/10

Years Exp

Express.js Intermediate

6.5/10

Years Exp

Redux Toolkit Intermediate

6.5/10

Years Exp

Git Intermediate

6.0/10

Years Exp

Docker Intermediate

6.0/10

Years Exp

MySql Intermediate

6.0/10

Years Exp

Spring Boot Intermediate

6.0/10

Years Exp

Tailwind CSS Intermediate

6.0/10

Years Exp

SQL Intermediate

6.0/10

Years Exp

Java Intermediate

5.5/10

Years Exp

AWS Intermediate

5.5/10

Years Exp

Kubernetes Intermediate

5.5/10

Years Exp

GraphQL Intermediate

5.5/10

Years Exp

Postgresql Intermediate

5.5/10

Years Exp

SQLite Intermediate

5.0/10

Years Exp

Firebase Intermediate

5.0/10

Years Exp

Python Intermediate

5.0/10

Years Exp

MongoDb Intermediate

5.0/10

Years Exp

WebSockets Intermediate

5.0/10

Years Exp

Zustand Intermediate

5.0/10

Years Exp

Prisma ORM Intermediate

4.5/10

Years Exp

Framer Motion Intermediate

4.0/10

Years Exp

Razorpay Intermediate

4.0/10

Years Exp

GSAP Intermediate

4.0/10

Years Exp

Drizzle ORM Beginner

3.5/10

Hono Beginner

3.5/10

Convex Beginner

3.0/10

WhatsApp Business API Beginner

3.0/10

FFmpeg Beginner

3.0/10

Rust Beginner

2.5/10

Tally ERP Beginner

2.5/10

Work Experience

Full Stack Developer

Runtime Solutions

Dec 2024 - Present

Owned backend delivery across 8+ client products: designed REST APIs, modelled schemas, wired third-party integrations, and shipped frontend features from the same codebase. Profiled and rewrote N+1 queries and over-fetching joins in Spring Boot + MySQL 8, cutting p95 response time by 25% on the three highest-traffic endpoints. Configured health-check endpoints and structured exception handlers in a CI/CD pipeline, achieving 99% uptime across all active deployments.

Full Stack Developer Intern

Zuusoft

Feb 2022 - Jul 2022

Delivered 5 MERN stack applications from Figma specs to production, including JWT auth flows and Redux state management, supporting 1,000+ active users across all apps. Diagnosed and fixed CSS/layout regressions across Chrome, Firefox, and Safari that were causing mobile drop-off, which tracked directly to a 15% improvement in mobile retention after release.