Senior Software Engineer — Distributed Systems & Trading Infrastructure

Citi is a leading financial institution seeking a highly skilled Senior Back-end Java Developer for their trading application technology team. The role involves designing, building, and maintaining scalable software solutions for back-office trading applications, emphasizing engineering excellence and financial technology transformation.

Responsibilities:

• Design, develop, and maintain robust, scalable, and high-performance back-office trading applications following SOLID principles, clean code standards, and modern software design patterns
• Implement trunk-based development practices, feature flags, and progressive delivery strategies to enable continuous integration and rapid, safe deployment cycles
• Apply Test-Driven Development (TDD) and Behavior-Driven Development (BDD) methodologies to ensure high unit test coverage, code quality, and production reliability
• Drive the adoption of CI/CD pipelines, DevOps practices, infrastructure as code, and automated testing to enhance system reliability and delivery velocity
• Conduct rigorous code reviews and vulnerability assessments, enforcing secure coding standards and ensuring compliance with organizational security policies
• Design and deliver distributed, event-driven microservices leveraging messaging platforms such as Kafka, Solace, Tibco, and MQ, with a focus on low-latency and high-availability requirements
• Collaborate with architects, product owners, and cross-functional teams to design scalable, resilient system architectures and contribute to technical design documentation
• Mentor junior engineers, lead technical discussions, and foster a culture of continuous learning, engineering excellence, and shared accountability
• Partner with DevOps teams to optimize deployment pipelines, observability tooling, and production resilience for critical trading systems