Java Backend Engineer

About the role

AmritSmile is the clinic OS for dental practices across India. Behind every fast appointment booking, every instant billing summary and every real-time calendar update is a backend that never sleeps. We are looking for a Java Backend Engineer who takes pride in writing clean, scalable, production-grade code — someone who thinks about concurrency, caching and correctness the way a dentist thinks about precision.

You will own significant parts of our core platform: the scheduling engine, the billing pipeline, the patient record APIs and the real-time event system that keeps every device in a clinic in sync. This is greenfield work in many areas — you will make architectural decisions that matter.

What you will do

• Design, build and maintain RESTful APIs consumed by the web, mobile and third-party integrations
• Own the scheduling engine — slot allocation, conflict resolution, waitlist management and reminders
• Build and scale the billing pipeline — invoice generation, GST computation and payment reconciliation
• Write performant database queries across MySQL and Redis; optimise slow paths before they become incidents
• Implement real-time features using WebSockets / SSE so clinic staff always see live data
• Write comprehensive unit and integration tests; maintain >80% coverage on critical paths
• Participate in architecture discussions, code reviews and on-call rotations
• Work closely with the frontend team to design clean, well-typed API contracts

What we are looking for

• 2+ years of professional experience writing production Java (Java 11+)
• Strong understanding of Spring Boot, Spring Security and Spring Data JPA
• Solid grasp of relational databases — schema design, indexing and query optimisation (MySQL preferred)
• Experience with REST API design principles and versioning strategies
• Comfortable with Git, CI/CD pipelines and deploying to cloud environments (AWS preferred)
• Strong problem-solving skills and the ability to reason about distributed systems
• Good written and spoken English — we are a remote-first team