Java API Developer

Birlasoft; Bengaluru; On-site; INR 1,800,000 - 4,000,000; Full time

Job summary

Birlasoft in Bengaluru is seeking a senior Java developer to design, build, and scale secure RESTful APIs using Java 8+ and Spring Boot. You will collaborate with product managers, architects, and DevOps to deliver backend services powering web and mobile apps.

The role emphasizes API design, security (OAuth2/JWT), testing, performance, and observability, with on‑premise or cloud deployments in a fast‑paced Agile environment.

Qualifications

• Strong knowledge of Java 8+ and Spring Boot.
• Experience with RESTful API design and integration.
• Experience using OpenAPI/Swagger for API docs.
• Familiarity with Postman or Rest Assured for testing.
• Hands-on with RDBMS and ORMs like JPA/Hibernate.

Responsibilities

• Design, build, and maintain RESTful APIs using Java and Spring Boot.
• Model and integrate with SQL/NoSQL databases and manage schemas.
• Implement API security: OAuth2/OIDC, JWT, RBAC, rate limiting.
• Write unit, integration, and contract tests.
• Optimize performance with caching, pooling, and non-blocking I/O.
• Implement observability: logging, metrics, tracing, health checks.
• Manage CI/CD and cloud deployment using Docker and Kubernetes.
• Collaborate in Agile teams and document APIs (OpenAPI/Swagger).
• Own services end-to-end from design to production support.

Skills

Java 8+

Spring Boot

REST APIs

GitHub Copilot

SQL/NoSQL

Maven/Gradle

OpenAPI/Swagger

Docker

Kubernetes basics

CI/CD

Tools

Postman

Rest Assured

JPA/Hibernate

Job description

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Location: INDIA - BENGALURU - BIRLASOFT OFFICE

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.