Senior Backend Engineer

Senior Java Backend Developer

Experience: 8+ Years
Role: Senior Java Backend Developer / Senior Software Engineer

Role Overview

We are looking for an experienced Senior Java Backend Developer with 8+ years of strong hands-on experience in designing and developing scalable backend applications using Java and Spring Boot.

The ideal candidate should have strong expertise in Java, Spring Boot, JPA/Hibernate, Oracle SQL, and REST API development, along with experience building secure, maintainable, and production-ready enterprise applications.

Key Responsibilities

• Design, develop, and maintain scalable backend applications using Java 21 and Spring Boot 3.x.
• Develop robust and high-performance REST APIs for enterprise applications.
• Implement data persistence and database interactions using Spring Data JPA and Hibernate.
• Design and optimize Oracle SQL queries, stored procedures, joins, indexes, and database interactions.
• Develop clean, maintainable, and reusable code following established software engineering practices.
• Implement application security using Spring Security and OAuth2.
• Work with Maven for dependency management and build automation.
• Develop unit and integration tests using JUnit 5 and Mockito.
• Containerize applications using Docker / Docker Compose.
• Troubleshoot application, API, database, and production issues.
• Collaborate with architects, developers, QA, DevOps, and business stakeholders to deliver high-quality solutions.
• Participate in code reviews and contribute to technical design and architecture discussions.
• Ensure applications meet requirements for performance, security, scalability, and maintainability.

Must-Have Skills

• 8+ years of hands-on Java development experience
• Strong expertise in Java 21
• Strong experience with Spring Boot 3.x
• Strong experience in REST API development
• Hands-on experience with JPA / Hibernate
• Strong experience with Oracle Database and SQL
• Experience with Spring Security and OAuth2
• Experience with Maven
• Strong experience with JUnit 5 and Mockito
• Hands-on experience with Docker / Docker Compose

Good-to-Have Skills

• Project Reactor / Spring WebFlux
• Hexagonal Architecture / Domain-Driven Design (DDD)
• Liquibase
• OpenSearch
• Resilience4j
• Caffeine Cache
• Apache POI / Excel processing
• Vavr
• Micrometer / Spring Boot Actuator
• Log4j2
• HOCON / JSON Schema tooling

Candidate Profile

• Strong understanding of object-oriented programming, Java fundamentals, collections, concurrency, and exception handling.
• Good understanding of Spring Boot application architecture and enterprise backend development.
• Strong experience designing and consuming RESTful APIs.
• Good understanding of database design and Oracle SQL performance optimization.
• Strong debugging and problem-solving skills.
• Experience working in Agile/Scrum development environments.
• Ability to independently handle technical requirements and contribute to solution design.
• Good communication and collaboration skills.

Technical Stack

Primary: Java 21 | Spring Boot 3.x | REST APIs | JPA | Hibernate | Oracle SQL

Security: Spring Security | OAuth2

Testing: JUnit 5 | Mockito

Build & Deployment: Maven | Docker | Docker Compose

Additional: WebFlux | Reactor | Liquibase | OpenSearch | Resilience4j | DDD | Hexagonal Architecture