Need a reliable backend shipped or repaired without a rewrite? I build and fix Java Spring Boot systems, from focused API work to production-critical issues.

This service can include: • REST API design and implementation • PostgreSQL schema, queries, and migrations • Authentication, authorization, and RBAC • Third-party and AI API integrations • Bug fixes, Redis caching, performance, and Docker setup

Relevant work includes Dervale, a production multi-provider AI gateway built with Java, Spring Boot, PostgreSQL, Redis, JWT, REST APIs, usage controls, observability, and billing.

You’ll receive clear, maintainable code, practical documentation, and a concise handoff. Scope and delivery are confirmed before work begins.

View my work at harmanpreet.dev and github.com/harmanpreetbuilds. Send me your backend goal or bug report to get started.