Senior Java Tech Lead

Citibank (Switzerland) AG; Chennai District; On-site; Confidential; Full time

Job summary

Citibank (Switzerland) AG is seeking a highly skilled Senior Java Developer to join the team in Chennai, Tamil Nadu. This role involves developing robust Java backend services for the data platform, focusing on data distribution and caching solutions.

The ideal candidate should have over 7 years of experience in Java development, with expertise in Kubernetes, Docker, and multithreading. A strong understanding of application security, data distribution technologies, and relational databases is also required.

Qualifications

• 7+ years of professional experience in Java development.
• Strong proficiency in Java and its ecosystem.
• Expert-level knowledge of multithreading and concurrency concepts.

Responsibilities

• Design and optimize high-performance Java backend services.
• Implement data distribution using Kafka and caching solutions.
• Collaborate with architects and product managers to meet requirements.

Skills

Java

Multithreading

Kubernetes

Docker

Kafka

Apache Ignite

SQL Databases

NoSQL Databases

Unit Testing

Troubleshooting

Job description

## Senior Java Tech LeadApplyremote type: Hybridlocations: Chennai Tamil Nadu Indiatime type: Full timeposted on: Posted Todayjob requisition id: 26969548# Senior Java DeveloperWe are seeking a highly skilled and experienced Senior Java Developer to join our team. The ideal candidate will be responsible for developing robust Java backend services for our data platform, focusing on data distribution and caching for various applications. This role involves maintaining and enhancing the existing platform, leveraging technologies like Kubernetes and Docker, and demonstrating a strong understanding of multithreading and security best practices.**Responsibilities:*** Design, develop, and implement high-performance Java backend services for the data platform, focusing on efficient data distribution using **Kafka** and advanced caching mechanisms utilizing technologies like **Apache Ignite, VMware GemFire**, or similar in-memory data grids.* Maintain, enhance, and optimize existing Java services and the data platform, ensuring scalability, reliability, and low latency.* Implement solutions using containerization technologies such as **Docker** and orchestration with **Kubernetes**.* Apply advanced **multithreading** techniques to develop highly concurrent and responsive applications.* Ensure the security of applications and data by implementing secure coding practices and adhering to security standards.* Collaborate with architects, product managers, and other developers to understand requirements and translate them into technical solutions.* Participate in the entire software development lifecycle, including requirements gathering, design, coding, testing, deployment, and support.* Conduct code reviews to ensure code quality, maintainability, and adherence to best practices.* Provide **L3 support** for production issues, including root cause analysis and timely resolution.* Participate in a rotational schedule for lower environment support, ensuring smooth operations and stability.* Troubleshoot and resolve complex technical issues, including performance bottlenecks and security vulnerabilities.* Write clear and comprehensive technical documentation.**Required Skills and Qualifications:*** **Experience:** 7+ years of professional experience in Java development.* **Java Core:** Strong proficiency in Java and its ecosystem, with a deep understanding of object-oriented programming, design patterns, and data structures.* **Backend Services:** Extensive experience in developing and deploying scalable and high-performance backend services.* **Data Distribution/Caching:** Proven experience with data distribution technologies like **Kafka** and in-memory data grids/caching solutions such as **Apache Ignite, VMware GemFire**, or similar.* **Database Technologies:** Strong understanding and hands-on experience with relational databases (e.g., PostgreSQL, Oracle, SQL Server) and/or NoSQL databases (e.g., MongoDB, Cassandra).* **Kubernetes & Docker:** Hands-on experience with Docker for containerization and Kubernetes for container orchestration and deployment.* **Multithreading:** Expert-level knowledge and practical experience with Java multithreading and concurrency concepts.* **Security:** Strong understanding of application security principles, secure coding practices, and experience implementing security measures.* **Unit Testing:** Experience with unit testing frameworks and practices (e.g., JUnit, Mockito).* **Troubleshooting & Support:** Excellent problem-solving skills with a strong ability to provide L3 support and troubleshoot complex production issues.* **Communication:** Excellent verbal and written communication skills, with the ability to articulate technical concepts to various stakeholders.* **Teamwork:** Ability to work effectively in an agile, collaborative team environment.**Preferred Qualifications:*** Experience with **OpenShift** cloud platform.* Familiarity with CI/CD pipelines and DevOps practices.* Knowledge of other messaging queues.* Background in financial services or a related high-throughput data environment.------------------------------------------------------## **Job Family Group:**Technology------------------------------------------------------## **Job Family:**Applications Development------------------------------------------------------## **Time Type:**Full time------------------------------------------------------## **Most Relevant Skills**Please see the requirements listed above.------------------------------------------------------## **Other Relevant Skills**For complementary skills, please see above and/or contact the recruiter.------------------------------------------------------*Citi is an equal opportunity employer, and qualified candidates will receive consideration without regard to their race, color, religion, sex, sexual orientation, gender identity, national origin, disability, status as a protected veteran, or any other characteristic protected by law.**If you are a person with a disability and need a reasonable accommodation to use our search tools and/or apply for a career opportunity review* *Accessibility at Citi.* *View Citi’s EEO Policy Statement and the Know Your Rights poster.*