Java Spark Developer

Job Title:

Java Spark Developer – (2-3 Years Experience)

Job Summary:

We are seeking a skilled Java Spark Developer with 2–3 years of practical experience in designing and implementing scalable data-analytics pipelines for large-volume telecom datasets (CDR, device events, and geolocation data). The role focuses on developing distributed Spark applications that extract meaningful insights such as movement patterns, home/work location identification, and behavioral trends from raw network data.

Key Responsibilities:

· Design, implement, and optimize Java-based Apache Spark pipelines for high-volume telecom data processing and insight generation.

· Build modular, multi-threaded and asynchronous data-processing jobs triggered via APIs.

· Develop correlation logic for identifying frequent locations (home/work), movement flow, dwell patterns, and device event interactions.

· Integrate and maintain data ingestion from ScyllaDB, ClickHouse, and PostgreSQL, ensuring consistency and performance.

· Collaborate with data analysts and testers to validate generated insights and fine-tune algorithms.

· Apply robust error handling, logging, and performance tuning for production-ready deployment.

· Participate in version control, CI/CD pipelines, and code reviews to maintain high code quality.

Technical Skills Required:

· Languages: Core Java (8 or above) with strong OOP and concurrency concepts.

· Frameworks & Libraries: Apache Spark (Java API), Spring Boot, Spring Security, Maven.

· Databases: ScyllaDB, ClickHouse, PostgreSQL.

· Data Processing: Expertise in telecom CDR, IMSI/IMEI mapping, cell-site and geolocation analytics, and device-event correlation.

· Strong understanding of distributed computing, multi-threading, and asynchronous data flows.

Soft Skills:

· Analytical thinker with strong problem-solving and debugging ability.

· Excellent teamwork and communication skills.

· Self-driven approach to optimization, documentation, and delivery.

Job Types: Full-time, Permanent

Pay: ₹400,000.00 - ₹700,000.00 per year