Developer III - Software Engineering - Java

Java Developer:

Experience: 3–5 years of hands-on experience in Java development

Primary Skills

• Core Java (Java 8+)
• Reactive Programming (RxJava)
• Strong understanding of OOP concepts, Collections, Multithreading
• Experience with Exception handling, Streams, and Lambdas

Secondary / Good-to-Have Skills

• POS device communication (Serial / USB / Network-based)
• Linux environment and debugging
• gRPC services
• Reactive Java frameworks
• DevOps basics (CI/CD pipelines)
• Version control systems such as GitLab

Job Summary

We are looking for a skilled and detail-oriented Senior Java Developer to join our engineering team. The ideal candidate will have strong hands-on experience in Core Java (Java 8+) and Reactive Programming (RxJava), with exposure to system-level integrations and device communication. The role involves designing, developing, debugging, and maintaining high-performance, scalable Java applications with a focus on reliability and efficiency.

Key Responsibilities:

• Design, develop, and maintain Java-based applications using Core Java
• Implement reactive programming patterns using RxJava for asynchronous and event-driven systems.
• Develop and integrate services using REST / gRPC where applicable.
• Work closely with cross-functional teams to build system-level and device-integrated solutions.
• Implement and support POS device communication (good to have).
• Debug and troubleshoot application issues in Linux environments.
• Optimize application performance, memory usage, and responsiveness.
• Write and maintain unit tests, integration tests, and technical documentation.
• Participate in code reviews and follow Java best practices and coding standards.
• Collaborate in Agile / Scrum development environments.
• Use GitLab for version control and participate in CI/CD workflows.

• Strong foundation in Core Java & Java 8 features
• Hands-on experience with RxJava or reactive programming
• Understanding of multithreading and concurrency
• Experience working in Linux-based systems
• Exposure to device communication or low-level integrations is a plus
• Good debugging and problem-solving skills
• Strong communication and team collaboration abilities.