Role: Senior Java Software Engineer (Big Data / Kafka)

Position Type: Full-Time Contract (40hrs/week)

Contract Duration: Long Term

Work Schedule: 8 hours/day (Mon-Fri)

Location: 100% remote in India

We are seeking a Senior Java Software Engineer to build and support high-scale backend applications that process terabyte-level data and integrate with Big Data and real-time streaming platforms.

The ideal candidate will have robust hands-on experience with Java, Spring Boot, complex SQL/database optimization, Kafka, and Big Data technologies such as Hadoop or Spark . The role requires strong software engineering fundamentals, automated testing, troubleshooting, and the ability to work independently on complex, data-intensive systems.

Key Responsibilities

- Design and develop scalable backend applications using Java and Spring Boot .
- Build and optimize services that process large-scale/terabyte-level datasets .
- Develop and optimize complex SQL queries, database schemas, indexes, and data processing .




- Build event-driven integrations using Kafka/MQTT .
- Work with Big Data platforms such as Hadoop and Spark .
- Develop automated unit and integration tests using a quality-first/TDD mindset.
- Troubleshoot performance, integration, and production issues.
- Participate in code reviews and follow software engineering best practices.
- Support CI/CD and containerized development environments.

Required Skills

- Strong hands-on Java/Spring Boot development.
- Strong SQL and database optimization experience.
- Hands-on experience with Big Data / terabyte-scale data processing .
- Experience with Kafka or MQTT .
- Experience with automated testing such as JUnit/Mockito .
- Strong understanding of distributed systems and backend architecture.

Nice to Have: Docker, Jenkins, Python, Unix, Testcontainers.

📌 Senior Java Software Engineer (India)
🏢 Sky Systems, Inc. (SkySys)
📍 India