Debjit Dey

Full-stack engineer with close to a year of production experience across two companies. Delivered frontend performance wins, backend services, and cloud deployments. Comfortable owning a feature end to end.

Full-Stack Developer at Valk Technologies & Solutions (2024-12 – 2025-09)

• Reduced time-to-interactive by ~35–40% across 3 client Next.js applications by introducing SSR and route-level code splitting, measured via Lighthouse before/after snapshots.
• Designed and maintained Node.js/Express REST services handling 50+ endpoints across 3 independently deployable services; added health-check endpoints enabling zero-downtime rolling restarts.
• Cut high-traffic query latency by ~60% on MySQL and MongoDB by auditing slow-query logs, rewriting N+1 patterns, and adding composite indexes on frequently filtered fields.
• Triaged and hotfixed production incidents by tracing errors through structured logs; all critical incidents resolved with zero-downtime restarts and no data loss.

Frontend Engineer (Contract) at Collabtalent LLC (2024-04 – 2024-11)

• Led Angular → React.js migration for the entire frontend, consolidating a fragmented component architecture into a single state management pattern; cut new contributor onboarding from ~3 weeks to ~5 days.
• Integrated streaming LLM backend APIs with async fetch and non-blocking UI updates, keeping the interface responsive during model inference; added retry logic that reduced user-facing timeout errors by ~70%.
• Built WCAG-AA compliant responsive layouts, verified across Chrome, Firefox, Safari, and mobile viewports, supporting a geographically distributed user base.

B.Tech in Computer Science Engineering – Techno India University, Kolkata (2020 – 2024)