core Java backend/system-level developer

Job Description (JD) – Must Have (Core Skills) ·

• Strong Core Java developer (minimum Java 1.8; current work in Java 17/21) ·
• Strong command of: o
• OOP concepts o
• Java Collections o
• Exception handling o
• Multithreading & concurrency (locks, executors, sync, thread pools) o

Experience in inter‑service communication (REST, TCP, messaging) ·

Experience with: o

• ZMQ for TCP-based communication o
• HTTP‑based communication in Python (or any other language) components ·
• Ability to work independently with minimal supervision ·
• Hands-on experience with Caching, memory optimization and maintaining latest data in temp & process memory ·

Experience in distributed messaging systems ·

• Comfort working in Linux environments Good to Have ·
• Working knowledge of Python ·

Experience with Job Scheduler ·

• Familiarity with ReactJS (only optional, front-end exposure) ·

Experience with CI/CD pipelines and Agile methodology ·

• Exposure to low‑latency applications Not Required No requirement for Spring, Spring Boot, Hibernate or ORM experience.