Kolkata, West Bengal, India

I am a Full Stack Developer with a strong backend focus, currently working at Genovation Kolkata. I design, build, and deliver scalable web applications, APIs, and full-stack solutions using modern engineering practices. I combine solid fundamentals in backend development with practical frontend experience and hands-on exposure to cloud, DevOps, and AI/ML integration.

I thrive on solving real product problems, writing clean and maintainable code, and driving projects from idea to production. I have worked with diverse tech stacks — Java (Spring Boot), Node.js (Express), Python (FastAPI/Flask), and React/Next.js — and I build systems that are production-ready, secure, and performant.

I’m seeking growth pathways into product companies, deeper backend engineering, system design leadership, and AI-powered product development.

Java

Spring Boot

Node.js

Python

React

PostgreSQL

MongoDB

Docker

• Java – Spring Boot, REST API design
• Node.js – Express, middleware, authentication
• Python – FastAPI, Flask

• React / Next.js (Vite for dev workflows)
• Component architecture, responsive UI

• MongoDB, MySQL, PostgreSQL
• Schema design, indexing, query optimization

• Docker & Kubernetes (local clusters, KIND)
• GitHub Actions / Jenkins Webhooks
• AWS basics (deployments, environments)

• Redis (caching, pub/sub, queue patterns)
• Logging, monitoring (Grafana/Prometheus setups)

• RAG/Vector search foundations (learning)
• Gemini API / AI integrations in apps

• Lead development of web services and dashboards
• Built secure, scalable REST APIs
• Integrated real-time components & async flows

• Multi-tenant Doctor Appointment System (Node.js + Express + MongoDB)
  • Design: tenant routing, RBAC, secure appointment workflows
  • Features: auth, domain/subdomain logic, queues for notifications
• Multi-dashboard Systems (Super-Admin, Admin, Users)
  • Built with React + Outlet routing
• Billing & Subscription Platform (Next.js + Clerk + Stripe)
  • Free vs paid plans, onboarding flows, business logic
• Invoice Generator (Next.js, Shadcn UI)
  • PDF generation, currency switching, templates w/ Gemini API
• Home Lab
  • Cluster of mini-PCs, shared storage, K8s + ArgoCD + GitOps + observability

• Clean, modular architecture — clear separation of concerns
• Structured error handling & unified API responses
• Strong validation & security (JWT, RBAC)
• Logging & Monitoring for production insight
• Automated Build & Deploy through CI/CD

• Short-Term: Ship production-ready backend systems, master system design.
• Mid-Term: Lead backend/infra architecture, build AI-enabled product features.

• Email: abirsarkar1999@gmail.com
• LinkedIn: linkedin.com/in/abir-sarkar
• Twitter: @its_abirsarkar
• Dev.to: dev.to/abirsarkar
• LeetCode: leetcode.com/abir007