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Software Developer

Arpan Sarkar

I build software that real businesses run on.

I'm a 19-year-old developer who builds production software. By day I'm an SDE at Teksor AI, building a healthcare platform remotely for a startup in Malaysia. On the side I freelance on a multi-tenant coaching platform, a hospital management system and a vendor recruitment platform for the US staffing market. Mostly TypeScript, NestJS, PostgreSQL and Redis, with RAG and agent pipelines where they earn their place.

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GitHubLinkedInTwitter / XEmail
merged PRs across 3 open source orgs
25+
patient records in my HMS, live in 2 hospitals
10k+
students on my coaching platform
1,000+
CGPA, B.Tech CSE
9.57

Experience

Work experience(3)

Teksor AI logo

SDE

Teksor AI•Remote, Malaysia • Full-time
09.2026 - Present3m

Building a healthcare platform in TypeScript across the stack, and delivered a production website for a Singapore-based client.

  • Developing a healthcare platform, building TypeScript services across frontend and backend.
  • Delivered an end-to-end production website for a Singapore-based client, owning architecture, implementation, and release.
TypeScript
NestJS
Next.js
Node.js
Prisma
MySQL
AWS
Redis

Freelance Developer

Self-Employed•Remote • Contract
03.2026 - Present9m

Shipping production systems for healthcare, education, and hiring clients as an independent contractor.

  • Architected a multi-tenant coaching management platform: one deployment serves multiple institutes on their own domains, each with isolated dashboards, all run from a single admin console, covering batches, attendance, fees, and exams for 1,000+ students.
  • Delivered a hospital management system live in 2 hospitals, managing 10k+ real patient records across OPD, IPD, pharmacy, cashier and a double-entry ledger, with 14-role RBAC.
  • Built VRMS, a vendor recruitment platform for the US staffing market, with one other developer: vendor onboarding, an 11-stage hiring pipeline, and timesheets and pay statements after placement.
TypeScript
Next.js
NestJS
Fastify
Express
PostgreSQL
Prisma
Drizzle ORM
Redis
Docker
Sequoia Print Pvt. Ltd logo

Full Stack Developer Intern

Sequoia Print Pvt. Ltd•Kolkata, India • Internship
06.2026 - 08.20263m

Shipped the company's client-facing website to production and built an internal management platform and a WhatsApp automation bot used company-wide.

  • Deployed the company's end-to-end client-facing website to production, owning frontend, backend, and release pipeline.
  • Built an internal management platform in NestJS over MySQL, covering attendance, leave, and role-scoped access for a 45+ headcount organisation.
  • Shipped a WhatsApp automation bot with AI-generated reminders and shift scheduling for 100+ staff, live in production behind an AWS CI/CD pipeline.
TypeScript
NestJS
Next.js
Node.js
Prisma
MySQL
AWS
Redis

Open Source

GitHub Activity

GitHub Contributions@arpan7sarkar
NovDecJanFebMarAprMayJunJulAugSepOctNov

Fig. 1. 6,382 contributions, Nov 2, 2025 - Nov 4, 2026. Source: GitHub.

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Live client work

Projects(11)

View all 11 projects
Hospital Management System | Live in 2 Hospitals preview
Client work · Under NDA

Hospital Management System

Live in 2 Hospitals

A hospital management system running in 2 hospitals with 10k+ real patient records, where every bed, order and counter receipt posts to one double-entry ledger.

TypeScriptNext.jsExpressPrismaPostgreSQLDocker
View Details
Coaching Management Platform | Multi-tenant, 1,000+ Students preview
Client work · Under NDA

Coaching Management Platform

Multi-tenant, 1,000+ Students

A multi-tenant platform for coaching institutes: each institute on its own domain, one deployment, and PostgreSQL row-level security keeping their data apart, with 1,000+ students across live institutes.

TypeScriptNext.jsFastifyDrizzle ORMPostgreSQLRedis
View Details

Capabilities

Tech Stack

Core tools I use to build scalable applications.

Languages

  • TypeScript
  • JavaScript
  • Python
  • Go
  • Java

Backend

  • Node.js
  • NestJS
  • Express.js
  • BullMQ
  • WebSockets
  • Prisma ORM
  • Zod

Frontend

  • Next.js
  • React
  • Tailwind CSS
  • Framer Motion

AI / LLM

  • RAG
  • LangChain
  • LangGraph
  • MCP
  • OpenAI
  • Agent SDK

Data

  • PostgreSQL
  • MySQL
  • MongoDB
  • Redis
  • Pinecone
  • Qdrant

Agentic Workflow

  • Claude Code
  • Codex
  • OpenCode
  • Pi
  • Herdr
  • tmux
  • kitty
  • Neovim
  • zsh

Cloud / DevOps

  • AWS
  • Docker
  • GitHub Actions
  • Cloudflare R2

Writing

Blog(4)

View all articles

I Was Using "Distributed Systems" and "Microservices" Wrong. Here's What They Actually Mean.

Systems Design•Jul 2026

Tokenization is not hard.

AI & Security•Jun 2026

I Shipped the Feature. I Missed the Product.

Product Thinking•Jun 2026

Background

Education & milestones

Brainware University logo

Brainware University

Bachelor of Technology in Computer Science (AI & ML) • Barasat, West Bengal
July 2024 - Present
CGPA: 9.57

Recognition & Milestones (7)

India Innovates

FinalistHackathon Finalist2025

Finalist in World's Biggest Civic Tech Hackathon, solving critical urban challenges through technology.

Sheriyans Hackathon 2026

AwardWinner (Best UX Design)2026

Best UX Design Award for creating an intuitive and user-friendly interface that enhanced the overall user experience.

GirlScript Summer of Code (GSSoC) 2025 & 2026

ProgramOpen Source Contributor2025 & 2026

Active contributor to open-source UI/UX and developer tools across the GSSoC 2025 and 2026 programs.

Open to conversations

Need an engineer who ships? Let's talk.

I'm working full-time as an SDE, but the right problem is always worth a conversation. Book a 15-minute intro call or send me an email, and let's see if it's a fit.

Email meBook a 15-min call