Senior Java Developer

About the job

We are seeking a Senior Java Developer to join Belen ITS for a full-time opportunity working on enterprise-grade, product-based applications for global clients. This role is ideal for engineers who are hands-on coders, enjoy designing REST APIs, and take ownership of building scalable, high-performance backend systems. You will work closely with cross-functional teams to deliver robust solutions, contribute to architectural decisions, and solve complex technical problems in an Agile environment. Responsibilities • Design, develop, and maintain RESTful APIs using Java and Spring Boot • Build and enhance microservices-based backend components • Write clean, efficient, and maintainable code following best practices • Develop and execute JUnit test cases to ensure code quality • Validate APIs using Postman and Swagger • Implement and optimize SQL queries and database interactions (Oracle preferred) • Apply authentication and authorization mechanisms (OAuth2, JWT, SAML, SSO) • Troubleshoot production issues and perform root cause analysis • Optimize application performance and scalability • Participate in Agile/Scrum ceremonies and contribute to sprint planning • Collaborate with UI, QA, and DevOps teams for end-to-end delivery • Review code and mentor junior developers when required Qualifications • Bachelor’s degree in Computer Science, Engineering, or a related field • 5+ years of professional experience in Java backend development • Strong hands-on experience with Spring Boot and REST API development • Solid understanding of Java OOP concepts and design principles • Experience working on product-based or enterprise applications • Strong programming, debugging, and analytical skills • Experience with JUnit, Postman, Swagger, Git, Maven, Jenkins • Working knowledge of SQL / Oracle databases • Familiarity with microservices architecture • Exposure to cloud platforms (AWS/Azure) is a plus • Experience working with international / foreign clients preferred • Ability to work independently and take ownership of deliverables • Immediate joiner or short notice period preferred

Requirements

• Java
• Spring Boot
• REST APIs
• Microservices
• SQL
• Agile

Qualifications

• Bachelor’s degree in Computer Science or related field
• 5+ years experience in Java backend development

Preferred Technologies

• Java
• Spring Boot
• REST APIs
• Microservices
• SQL
• Agile