Vipul .

Building scalable and high-performance backend systems using Node.js and Express. Strong focus on API design, authentication, and clean architecture.

Designing RESTful and GraphQL APIs with proper validation, security, and performance optimization. Experienced in integrating third-party services.

Designing efficient database schemas and optimizing queries using PostgreSQL and MongoDB. Skilled in indexing, relationships, and performance tuning.

Implementing caching (Redis), rate limiting, and stateless architectures to build scalable and reliable backend systems.

Hands-on experience in AI data workflows including data annotation, validation (PII, sentiment, intent), and ensuring high-quality datasets.