Senior Java Kafka Developer

Company Description

Synthlane is a leading IT services and consulting firm that helps businesses, large enterprises, and government institutions solve complex technology challenges with strategic, scalable solutions. The company offers services across enterprise IT consulting, digital transformation, cybersecurity, cloud and infrastructure, and custom software development. Synthlane focuses on aligning advanced technologies with clients business objectives to improve efficiency, security, and performance. Its experienced consultants, engineers, and strategists collaborate closely with clients to understand specific needs and deliver measurable results. Synthlane positions itself as a trusted partner for organizations seeking reliable, future-ready IT services and innovation-led growth.

Job Description

We are looking for an experienced Java Kafka Developer with 5+ years of hands-on software development experience to design, develop, and maintain scalable, high-performance, event-driven applications.

The ideal candidate should have strong expertise in Java, Spring Boot, Apache Kafka, microservices, REST APIs, and distributed systems. The candidate will work closely with engineering, architecture, DevOps, and product teams to build reliable backend services and real-time data-processing solutions.

This role is based in Gurgaon, and shortlisted candidates must be available to attend the interview in person at our Gurgaon location.

Requirements

• Design and develop backend applications using Java and Spring Boot.
• Build and maintain event-driven microservices using Apache Kafka.
• Develop and manage Kafka producers, consumers, topics, partitions, and message-processing workflows.
• Design scalable, reliable, and fault-tolerant distributed systems.
• Develop and integrate REST APIs and microservices.
• Implement Kafka-based asynchronous communication between services.
• Troubleshoot Kafka consumer lag, message failures, offset issues, retries, and performance bottlenecks.
• Implement error handling, retry mechanisms, dead-letter queues, and idempotent message processing.
• Work with relational and NoSQL databases.
• Write unit, integration, and API tests.
• Participate in code reviews and technical design discussions.
• Optimize Java applications and Kafka performance.
• Work with CI/CD pipelines and containerized environments.
• Monitor production applications, logs, Kafka clusters, and system performance.
• Perform root-cause analysis and resolve production issues.
• Collaborate with DevOps/SRE teams for deployment, monitoring, and production support.

Required Skills

Java, Spring Boot, Apache Kafka, Kafka Producer, Kafka Consumer, Kafka Topics, Kafka Partitions, Consumer Groups, Offset Management, Microservices, REST APIs, Event-Driven Architecture, Distributed Systems, SQL, PostgreSQL/MySQL/Oracle, Maven/Gradle, Git, JUnit, Mockito, Multithreading, Docker, Linux, CI/CD, Production Troubleshooting, Root Cause Analysis

Why Work at Synthlane

Real production infrastructure exposure (not just toy tasks). Work closely with engineers building real solutions and client deployments. Learn what high reliability actually means in production. Fast-paced, high-impact environment where good work is noticed quickly.