**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 modern, 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 current 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 inproduction. + **Mentorship and Leadership:** ?Conduct rigorous code reviews, mentor junior developers, and contribute to the continuous improvement of team standards and development processes.



+ **Cross-Functional Collaboration:** ?Work in close partnership with product managers, business analysts, and other global teams to ensure technical solutions are perfectly aligned with evolving business requirements. **Qualifications** **Required:** + **Experience:** ?8+ years of hands-on professional experience in designing and building robust, scalable, and maintainable server-side applications using Java. + **Technical Depth:** ?Strongexpertisein Object-Oriented Design, data structures, design patterns, and concurrency. + **Database Skills:** ?5+ years ofsignificant experiencewith SQL databases,demonstratingproficiencyin writing complexqueriesandoptimizingdatabase performance. + **Operating Systems:** ?Strong command of the Unix/Linux environment, including familiarity with system-level operations and administration. + **Education:** ?Bachelor's degree in Computer Science, Engineering, ora relatedfield. **Preferred (Highly Desirable):** + **Legacy Modernization:** ?Proven experience in migrating complex, large-scale legacy systems (particularly those heavily reliant on shell scripting and monolithic databases) to modern, cloud-nativemicroservicesarchitectures. + **Modern Technologies:** ?Deep familiarity with modern Java frameworks (e.g., Spring Boot),microservicesarchitecture, and containerization platforms (e.g., Docker, OpenShift). + **AI-Assisted Development:** ?Experience using AI-powered development tools (e.g., GitHub Copilot, Claude, Devin) to accelerate development and improve code quality. + **Database Systems:** ?Hands-on experience with enterprise-level SQL databases such as MSSQL. + **Scripting:** ?Proficiencyin shellscripting, whichwill be essential for understanding and migrating the legacy system. + **Domain Knowledge:** ?A solid understanding of the financial accounting domain, including concepts like posting, calculations, and sub-ledger processes.



**Why Join Us?** + **Impact:** ?Take a leadership role in a high-visibility modernization project that will directly shape the future of Citi's global financial operations. + **Challenge:** ?Solve unique and rewarding technical challenges while dismantling a legacy system and building acutting-edgeplatform from the ground up. + **Culture:** ?Be part of a world-class engineering team in a dynamic, collaborative, and supportive environment that encourages innovation and continuous learning. + **Growth:** ?Access Citi's extensive professional development resources and enjoy clear pathways for career advancement within a leading global financial institution. ------------------------------------------------------ **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 (https://www.citigroup.com/citi/accessibility/application-accessibility.htm)_ _._ _View Citi's_ _EEO Policy Statement (https://www.citigroup.com/global/eeo-aa-policy)_ _and the_ _Know Your Rights (https://www.eeoc.gov/sites/default/files/2023-06/22-088_EEOC_KnowYourRights6.12ScreenRdr.pdf)_ _poster._ Citi is an equal opportunity and affirmative action employer. Minority/Female/Veteran/Individuals with Disabilities/Sexual Orientation/Gender Identity.

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