backend-engineer

Spring Boot 3.2.1 with JAX-RS resources provides a structured way to build REST APIs. Define resource classes annotated with JAX-RS decorators, connect them to service layers, and Spring Boot handles routing, dependency injection, and HTTP mapping automatically.

Liquibase migrations track and apply schema changes to MySQL databases in a version-controlled way. Define changesets in XML or SQL, place them in your Spring Boot classpath, and Liquibase applies them on startup, ensuring consistent deployments across environments.

Yes. Kafka integrates with Spring Boot for publishing and consuming messages across services. Configure topics, set up producer and consumer beans, and coordinate event flow between API layers, service logic, and downstream systems reliably.

Spring Data JPA repositories abstract MySQL queries and transactions, reducing boilerplate. Define entity classes, extend repository interfaces, and leverage JPA to handle ORM, lazy loading, and connection pooling while keeping the data layer decoupled from business logic.

Implement consistent error handling with exceptions caught at API boundaries, log contextual details at each layer, and emit observability metrics. This surfaces failures to monitoring systems, aids debugging, and meets QA readiness and reviewer feedback standards.

Temporal handles durable, resumable workflows with automatic retry and state persistence. Use it when your backend must coordinate multi-step processes across services—payment flows, order fulfillment, batch jobs—ensuring reliability without polling or manual state management.