Job Summary
At Citi, we believe in the power of engineering to drive success and foster a culture where innovation, collaboration, and professional growth thrive.
Join Citi's Oasys Financial team as a Senior Java Developer and take a pivotal role in a landmark modernization project. Oasys is Citi’s core sub-ledger system for the Over-the-Counter (OTC) business, processing millions of trades daily. We are embarking on a major strategic initiative to transform this key platform, moving it from a legacy system built on shell scripts into a state-of-the-art architecture based on modern Java microservices.
We are seeking a highly skilled and motivated technical leader to drive the design, development, and delivery of our next-generation financial accounting systems, ensuring they meet the highest standards of scalability, performance, and security.
Key Responsibilities
As a Senior Developer, you will be a technical leader at the heart of this transformation. Your duties will include:
Re-Architect and Modernize: Lead the re-architecture of our legacy financial ledger,



migrating complex business logic from shell scripts and stored procedures into a contemporary, event-driven platform built on Java microservices.
Hands-On Development: Design, develop, and implement high-performance, scalable, and secure Java applications that will form the new backbone of our financial systems.
Champion Code Quality: Write clean, well-documented, and thoroughly testable Java code. Act as a champion for software engineering best practices, including Object-Oriented Design, SOLID principles, and Test-Driven Development (TDD).
Database Integration: Collaborate closely with database teams to design and implement strategies for data integration and migration as part of the transition to the new Java architecture.
Problem Solving: Act as a key technical expert, troubleshooting and resolving complex issues that arise during system migration, modernization, and in production.
Mentorship and Leadership: C

📌 Senior Java Developer Assistant Vice President (Pune)
🏢 Citi
📍 Pune