03

Backend

APIs, databases, and infrastructure — built to scale.

01

The Architecture

Designed a scalable REST API with Node.js, Express, and PostgreSQL from the ground up.

ClientExpressAPIPostgresDBGET /api/usersPOST /api/projectsPUT /api/data/:idDELETE /api/item
02

Database Design

Normalized schema, indexed queries, and optimized joins — query time dropped by 70%.

iduser_nameprojectcreated_at1user_1project_12024-01-012user_2project_22024-02-013user_3project_32024-03-014user_4project_42024-04-01⚡ Indexed↓ 70% faster✓ Normalized
03

Security & Auth

JWT authentication, rate limiting, input validation, and encrypted sensitive data.

🔒eyJhbGciOiJIUzI1NiJ9.eyJ1c2VySWQiOiIxMjM...JWTJWT TokenRate limit: 100req/minStatus: ✓ Protectedbcrypt hash: $2b$10$...Encrypted ✓Input validation • CORS • Helmet.js
04

Deployed & Scaled

Dockerized, deployed on Railway, handles 10k requests/min with zero downtime.

DockerRailway✓ Live✓ Auto-deploy10k req/minhandled ✓Uptime99.9%Zerodowntime ✓$ docker push && railway up ✓