Senior Java Developer Assistant Vice President

Citi · Pune · 8+ yrs experience · Posted 2026-07-18

Tech stack: Docker, Java, Linux, SQL, Spring Boot, Unix

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About the role

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
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 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:
- 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: - 8+ years of hands-on professional experience in designing and building robust, scalable, and maintainable server-side applications using Java.
- Technical Depth: Strong expertise in Object-Oriented Design, data structures, design patterns, and concurrency.
- Database Skills: 5+ years of significant experience with SQL databases demonstrating proficiency in writing complex queries and optimizing database performance.
- Operating Systems: Strong command of the Unix/Linux environment, including familiarity with system-level operations and administration.
- Bachelor’s degree in Computer Science Engineering, or a related field.
- 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-native microservices architectures.
- Modern Technologies: Deep familiarity with modern Java frameworks (e.g., Spring Boot)
- microservices architecture, and containerization platforms (e.g., Docker, OpenShift).
- AI-Assisted Development: 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: Proficiency in shell scripting, which will 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 a cutting-edge platform 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.

Qualifications

- 8+ years of hands-on professional experience in designing and building robust, scalable, and maintainable server-side applications using Java.
- Technical Depth: Strong expertise in Object-Oriented Design, data structures, design patterns, and concurrency.
- Database Skills: 5+ years of significant experience with SQL databases demonstrating proficiency in writing complex queries and optimizing database performance.
- Operating Systems: Strong command of the Unix/Linux environment, including familiarity with system-level operations and administration.
- Bachelor’s degree in Computer Science Engineering, or a related field.
- 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-native microservices architectures.
- Modern Technologies: Deep familiarity with modern Java frameworks (e.g., Spring Boot)
- microservices architecture, and containerization platforms (e.g., Docker, OpenShift).
- AI-Assisted Development: 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: Proficiency in shell scripting, which will 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 a cutting-edge platform 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.

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 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:
- 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.

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