Backend

When a client library wraps ~25 near-identical HTTP endpoints, describing them as data instead of writing 25 methods pays off — with one real trade-off.

A self-hosted URL shortener with a React admin panel, built with Go, Redis, and PostgreSQL.

An open-source unofficial REST API client for the WazirX crypto exchange in Go, acknowledged by WazirX's co-founder.

An open-source unofficial REST/WebSocket client for the WazirX crypto exchange in Java, acknowledged by WazirX's co-founder.

Blockchain integrations and fault-tolerant wallet-sync workflows for a crypto portfolio and tax platform.

Led backend architecture for a multi-tenant B2B carbon-accounting SaaS — schema, APIs, and a Scope 1/2/3 emissions engine.

Led an online poker platform with advanced tournament features and an event-driven backend for thousands of concurrent players.

Designed the database architecture for an in-house Global Distribution System and a serverless bus-ticket booking engine.

Five-plus years on a real-money real-time poker platform: game logic, load testing at 10k+ concurrent users, disaster recovery, and a PHP → Node.js migration.