Open to opportunities

Sajeb Khan

@sajebkhan

Software Developer specializing in scalable Java microservices and REST APIs with a focus on performance and reliability.

India

Message

What I'm looking for

I’m looking for a backend/microservices role where I can build reliable Java/Spring services, improve performance, design clean REST APIs, and ship using Docker and CI/CD on AWS—while growing through real ownership and mentorship.

I’m a Software Developer focused on building scalable backend systems and microservices. I work primarily with Java, Spring Boot, and PostgreSQL, and I care deeply about clean service design, reliable security, and maintainable APIs.

In my projects, I’ve delivered measurable performance improvements by optimizing JPA queries—eliminating N+1 problems, adding targeted indexing, and using caching where it made sense. I also design and implement RESTful APIs with strong consistency, including role-based access control with Spring Security and stateless JWT authentication.

I’ve built end-to-end booking and ordering workflows, including seat-locking to prevent double booking under concurrent requests, and I’ve documented 15+ REST APIs. I containerize services with Docker and support deployment using CI/CD (GitHub Actions and Jenkins) to AWS (EC2, S3, IAM), so systems run predictably from development to production.

Experience

Work history, roles, and key accomplishments

DesiNest Backend Developer

DesiNest

Jan 2026 - Mar 2026 (2 months)

Architected product, inventory, cart, and order microservices with a layered architecture and clear separation of concerns. Improved performance by optimizing JPA queries (eliminating N+1 and adding targeted indexes) and implemented RBAC using Spring Security.

Java Spring Boot PostgreSQL JPA Docker Microservices Event Driven Architecture Spring Security RBAC Query Optimization N+1 Elimination Indexing

BookMyShow Backend Developer

BookMyShow Backend

Nov 2025 - Dec 2025 (1 month)

Built a ticket booking backend including movie listings, show scheduling, seat selection, and end-to-end booking workflows. Implemented a seat-locking mechanism for concurrent booking consistency and secured endpoints with stateless JWT authentication using Spring Security.