Senior Java Developer - Big Data Platform

The Role

This senior developer role is ideal for a seasoned technologist with deep expertise in building enterprise-level Java applications and scalable data platforms. The position involves designing and implementing data pipelines and APIs within the financial sector, requiring a strong blend of software engineering, big data knowledge, and architectural leadership. The successful candidate will guide technical standards and mentor other developers while driving the delivery of complex data-centric projects.

• Design, build, and maintain robust, scalable data pipelines and APIs to support analytics, quants, and product development teams.
• Drive the design, simplification, and modernization efforts for individual system components, contributing to overall architectural improvements.
• Lead application systems analysis and programming activities, establishing and implementing new or revised systems.
• Take ownership of technical frameworks and platforms, ensuring that common solutions and strategic architecture are consistently implemented across the organization.
• Ensure application design adheres to the overall architecture blueprint and develop standards for coding, testing, debugging, and implementation.
• Leverage expertise in Java-based frameworks, including Spring Boot, Spring MVC, Hibernate, and other relevant Spring projects, to develop robust solutions.
• Engage in Big Data development initiatives, utilizing technologies such as PySpark, Hive, HDFS, Impala, Presto/Trino, Kerberos Authentication, and S3 Object Storage.
• Perform comprehensive data analysis to identify and address data discrepancies or gaps within production datasets.
• Demonstrate proficiency in deploying applications across both Virtual Machine (VM) and containerized environments.
• Actively contribute to daily scrum discussions, ensuring a clear understanding of assigned tasks and stories, and committing to their timely delivery.
• Serve as a technical advisor and coach to mid-level developers and analysts, providing guidance and allocating work as necessary.
• Partner with multiple management teams and stakeholders to ensure the appropriate integration of functions and define system enhancements for new products and process improvements.

• Minimum of 6+ years' hands‑on software development experience with at least 5 years' hands‑on experience in backend development using Java (17+ preferred).
• Extensive experience with the Spring ecosystem, including Spring Boot, Spring MVC, and Hibernate.
• Hands‑on experience with Big Data technologies such as PySpark, Hive, HDFS, Impala, and Presto/Trino is highly preferred.
• Solid understanding of object‑oriented programming (OOP) principles, data structures, and software design patterns.
• Demonstrated experience designing and building RESTful APIs and microservices.
• Proficiency with both relational databases (e.g., Postgre
  
  SQL, Oracle) and No
  
  SQL databases (e.g., Mongo
  
  DB).
• Experience with message brokers like Apache Kafka for building asynchronous, event‑driven systems.
• Familiarity with containerization technologies (Docker, Kubernetes) and CI/CD pipelines.
• Expert experience in Linux environments.
• Strong understanding of software development best practices, including automated testing, security, and performance tuning.
• Demonstrated leadership, project management, and mentoring skills.
• Previous experience in a lead or senior developer role with mentoring responsibilities is highly desired.
• Excellent problem‑solving, analytical, and communication skills, with the ability to adjust priorities as circumstances dictate.
• Experience developing in Python and with cloud platforms (e.g., AWS, GCP) is desired.
• Prior work experience in Capital Markets trade processing is a significant plus.

• Bachelor’s degree in a relevant field is required; a Master’s degree is preferred.

Job Family Group:
Technology

Job Family:
Applications Development

Time Type:
Full time

Primary

Location:

Jersey City, New Jersey, United States

Primary Location Full Time Salary Range: $ - $

Benefits include medical, dental & vision coverage; 401(k); life, accident, and disability insurance; and wellness programs. Citi also offers paid time off packages, including planned time off (vacation), unplanned time off (sick leave), and paid holidays. For additional information regarding Citi employee benefits, please visit  Available offerings may vary by jurisdiction, job level, and date of hire.

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.

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