Java Backend Developer

We are looking for a Java Backend Developer who thrives on building scalable, high-performance systems that power large-scale applications. You will own the development and delivery of backend services, RESTful APIs, and event-driven architectures, working closely with product managers, architects, and cross-functional engineering teams to translate complex business requirements into elegant technical solutions.

The ideal candidate brings deep Java expertise, a strong command of modern frameworks and design patterns, hands-on experience with both relational and NoSQL databases, and a forward-looking mindset toward leveraging AI-powered developer tools to accelerate delivery and improve code quality.

Key Responsibilities

• Design, develop, and maintain robust, scalable backend services and RESTful APIs using Java 8+.
• Build and evolve microservices-based architectures using Spring Boot, ensuring high cohesion and loose coupling.
• Implement asynchronous and event-driven services using reactive programming models (CompletableFuture, Project Reactor, or Vert.x).
• Apply domain-driven design (DDD) and SOLID principles to deliver maintainable, production-ready code.
• Design and implement data models and integrations with relational databases (MySQL, PostgreSQL) and NoSQL stores (MongoDB, Cassandra, Couchbase).
• Leverage Spring Data JPA and Hibernate for ORM and efficient data access patterns.
• Integrate with internal systems, third-party services, messaging platforms (Kafka, RabbitMQ), and external APIs.
• Write comprehensive unit and integration tests using JUnit 5, Mockito, or TestContainers; maintain high code coverage standards.
• Actively use AI coding assistants (e.g., GitHub Copilot, Claude Code, Gemini etc. ) to boost productivity, generate boilerplate, and explore solutions.
• Apply prompt engineering techniques to leverage LLMs for debugging, code review, documentation generation, and test case creation.
• Work in an Agile/Scrum environment with iterative delivery cycles, sprint planning, and continuous improvement.

Required Skills & Qualifications

• 5+ years of hands-on backend development experience; Java as the primary language.
• Java 8+

Strong proficiency in Streams, Lambda expressions, Optional, Concurrency utilities (CompletableFuture, ExecutorService, Fork/Join)

• Strong understanding of Java memory model and garbage collection fundamentals
• Spring & Spring Boot

Deep expertise in Spring MVC, Spring Security (OAuth2 / JWT), Spring Cloud

• Strong knowledge in Dependency injection, AOP, auto-configuration, and Actuator
• Hibernate and Spring Data JPA

Proficient with Entity lifecycle, lazy vs. eager loading, N+1 problem prevention

• Strong knowledge in Query optimization, transactions, and connection pooling
• Strong understanding of asynchronous programming patterns: callbacks, futures, reactive streams.
• Experience with event-driven architectures using Kafka or RabbitMQ for decoupled, scalable system design.
• Familiarity with reactive frameworks (Project Reactor, RxJava, or Vert.x) is a strong plus.
• Proven experience building and operating microservices at scale.
• Experience working with relational (MySQL, PostgreSQL) and NoSQL (MongoDB, Cassandra, Couchbase) databases.
• Experience with unit testing frameworks: JUnit 5, Mockito, AssertJ.
• Practical, daily use of at least one AI coding assistant (GitHub Copilot, Claude Code, Gemini, or equivalent).
• Ability to critically evaluate, refactor, and improve AI-generated code — not just accept suggestions blindly.
• Awareness of prompt engineering for software development tasks (refactoring, documentation, test generation).
• Experience with cloud platforms: AWS or GCP (compute, storage, managed databases, messaging).
• Containerization and orchestration: Docker and Kubernetes basics.
• CI/CD: Jenkins, GitHub Actions, or equivalent pipelines.
• Experience with Spring Security for authentication and authorization layers.