Headline

Frontend Engineer | React, Next.js, TypeScript | Full-Stack Capable (Node, PostgreSQL) | Ex-HackerEarth, 550+ npm downloads

About

I spent 10 months as a Frontend Engineer intern at HackerEarth - a large-scale coding assessment platform used by enterprise hiring teams worldwide. I owned UI components from design handoff to deployment, resolved critical bugs across core assessment flows, and shipped under real product timelines working closely with backend engineers and designers. Outside of work, I build things independently: - OpenFrame - image-sharing platform, Next.js + Turborepo, event-driven Kafka pipeline, direct-to-S3 uploads - PR Ninja - LLM-driven GitHub PR reviewer (Next.js, Webhooks, Redis, PostgreSQL). - use_image_downloader - open-source React hook, 400+ npm downloads - Tunes - Music streaming platform with redis caching cut API latency 21% I write TypeScript-first, think in component systems, and care about performance, reliability, and clean abstractions. I've shipped production code, collaborated cross-functionally, and built things people actually use. Graduating B.Tech CS · 2026 | Open to SDE-1 / Frontend Engineer roles 📩 imsyntn@gmail.com | sayantan.online

Location

Kolkata

AI stack

aistudio

antigravity

gemini

n8n

openai

OpenRouter

Work experience

Frontend Engineer Intern at HackerEarth, Feb 2025 - Nov 2025 · 10 mos, Bangalore Urban, • Delivered 10+ pixel-perfect, reusable, accessible, cross-browser-compatible React and TypeScript components for HackerEarth’s enterprise assessment platform, used by hiring teams at 1,000+ companies. • Fixed 4 UI bugs across the team-management and candidate-snapshot screens and implemented resume file-size validation with exception handling to improve assessment reliability and prevent misuse. • Built the end-to-end candidate test-onboarding dashboard by translating Figma designs into responsive, accessible React components. • Built a test-reset history table on the recruiter dashboard, giving recruiters visibility into prior test reports, improving transparency. • Participated in 15+ code reviews and Agile sprint planning, collaborating with engineers and designers to maintain code quality, identify edge cases and deliver reliable React features.

Frontend Web Developer at Freelance, Jul 2023 - Dec 2023 · 6 mos

Education

Bachelor of Technology - BTech, Computer Science, Greater Kolkata College of Engineering and Management (GKCEM), Baruipur

Balurghat High School

Public links

github: https://github.com/imsyntn

sayantan.online: https://sayantan.online/

medium: https://medium.com/@ssayantan84