Java API Developer

Job description

Area(s) of responsibility We are seeking a Java developer focused on building secure, scalable, and resilient RESTful APIs using Spring Boot . You’ll work closely with product managers, architects, and DevOps to deliver backend services powering web and mobile applications. The ideal candidate brings strong Java fundamentals, Spring ecosystem experience, and hands-on API design/implementation skills and with using GitHub CoPilot experience. Key Responsibilities • Design, build, and maintain RESTful APIs using Java and Spring Boot (Web, Data, Security, Actuator). • Model and integrate with databases (SQL/NoSQL), write efficient queries, and manage schema migrations • Implement API security: OAuth2/OIDC, JWT, role-based access, rate limiting, input validation. • Write clean, testable code with unit, integration, and contract tests • Optimize performance and reliability (caching, connection pooling, async/non-blocking I/O, pagination). • Observability: structured logging (SLF4J/Logback), metrics/tracing (Micrometer, OpenTelemetry), and health checks (Actuator). • CI/CD and cloud deployment (Docker, basic Kubernetes concepts, pipelines; Azure exposure a must). • Collaborate in Agile teams: participate in grooming, estimation, code reviews, and documentation (OpenAPI/Swagger). • Own services end‑to‑end: from design and development to deployment and production support (on-call rotation optional). Required Qualifications • Strong knowledge of Java 8+ (preferably 11/17 or later) and Spring Boot. • knowledge and experience of using GitHub Copilot • Experience building RESTful APIs and integrating with external/internal services. • Solid understanding of data structures, concurrency, and error handling. • Hands-on with RDBMS (e.g., PostgreSQL/MySQL) and ORMs (JPA/Hibernate). • Proficient with Git, branching strategies, and Maven/Gradle. • Familiarity with API documentation (OpenAPI/Swagger) and Postman/Rest Assured. Senior / Lead • API architecture & design (resource modeling, versioning, idempotency, resilience patterns). • Security best practices (OAuth2/OIDC, JWT, mTLS, secrets management). • Scalability & resilience patterns (Circuit Breaker/Retry/Backoff with Resilience4j; async/reactive programming). • Experience with microservices, message brokers (Kafka/RabbitMQ), and event-driven patterns. • Cloud-native deployments (Docker/K8s) and IaC (Terraform/Helm is a plus). Mentoring developers and leading design/code reviews.