Santosh Sarkar

Santosh Sarkar

Fullstack Engineer

Ibuildsystemsthatscaleacrossthestack—fromdatabaseschematointerfacepixels.Performanceisafeature.Designisengineering.

Get in touch
Featured Work

Selected Projects

Payment Gateway Platform

Payment Gateway Platform

A scalable payment processing system handling millions of transactions with real-time fraud detection.

Next.jsNode.jsRedisPostgreSQLKafkaDocker
Live Site →Source Code
Analytics Dashboard

Analytics Dashboard

Real-time analytics dashboard processing streaming data with sub-second query response times.

ReactPythonApache KafkaTimescaleDBGraphQLAWS
Live Site →Source Code
Developer API Platform

Developer API Platform

RESTful API platform serving 10k+ developers with comprehensive documentation and SDKs.

ExpressOpenAPINode.jsMongoDBRedisKubernetes
Live Site →Source Code
Journey

Story Timeline

2023

Started Coding

Began the journey into software development. Built first web applications and discovered a passion for engineering scalable systems.

2024

Backend & APIs

Deep-dived into backend development — REST APIs, database design, authentication, and server architecture. Started contributing to open-source.

2025

Fullstack Systems

Bridged frontend and backend expertise. Built end-to-end features, learned cloud infrastructure, and shipped production applications.

2026

Scalable Product Engineering

Architecting distributed systems, optimizing performance at scale, and building product-grade experiences that serve thousands of users.

Expertise

Skills & Systems

Frontend Systems

React
Next.js
Tailwind CSS
Framer Motion
JavaScript
HTML/CSS
Responsive Design
Web Performance

Backend Systems

Node.js
Express
Python
PostgreSQL
MongoDB
Redis
REST APIs
GraphQL

Architecture

System Design
Microservices
Event-Driven Architecture
Cloud Infrastructure
CI/CD
Docker
Monitoring

Tools & Workflow

Git
VS Code
Figma
Linux
AWS
Vercel
Datadog
Notion
Career

Experience

Senior Fullstack Developer

Tech Corp
2025 — Present
  • Architected a distributed payment system processing $2M+ monthly transactions
  • Reduced API response times by 60% through query optimization and caching
  • Led a team of 4 engineers delivering cross-team platform features

Fullstack Developer

StartupXYZ
2024 — 2025
  • Built the core product from MVP to production serving 50k+ users
  • Designed and implemented REST API layer consumed by web and mobile clients
  • Established CI/CD pipelines reducing deployment time from hours to minutes

Web Developer

Freelance
2023 — 2024
  • Delivered 10+ client projects across e-commerce, portfolio, and SaaS platforms
  • Integrated third-party APIs including payment gateways and analytics services
  • Migrated legacy websites to modern tech stacks improving performance by 40%

Let's build something together

I'm currently open to new opportunities and collaborations. Whether you have a project in mind or just want to say hello.

hello@santoshsarkar.dev
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