Senior Java Engineer (Equinox) – Equity Derivatives Tech – VP in London

Engineer the future of global finance. At Citi, our Tech team doesn’t just support finance – we are helping to redefine it. Every day, $5 trillion crosses through our network. We do business in 180+ countries operating at a scale few can match. From deploying advanced AI to helping shape global markets, we build systems that matter. Look to join a team where your work helps influence economies, your ideas can drive innovation and outcomes, and your growth is backed by mentorship, continuous learning and flexibility with potential hybrid work opportunities. Help solve real-world challenges that touch millions and get the opportunity to build the future of finance with Citi Tech.

Department Equities Technology at Citi is undertaking a bold, multi‑year transformation to build a best‑in‑class global platform across execution, prime, clearing and cross‑product margining. We are re‑engineering our technology estate to achieve world‑leading performance and resiliency, enabling new capabilities in advanced execution, global market connectivity, and modernised post‑trade, clearing and margin processes. Our ambition is to deliver a seamlessly integrated, highly automated platform that drives outstanding client outcomes and accelerates growth across our global franchise.

As part of the team, you’ll collaborate closely with high‑calibre engineers and deeply engaged business and product partners – working together to define and deliver the next generation of Equities technology at Citi.

About The Team: Citi Investment Strategies (CIS) Engineering group comprises four teams. The Equinox team is responsible for development, maintenance and support of a data platform for the CIS business.

Role Overview: The role of a Senior Software Engineer for Equinox requires a combination of strong technical and leadership skills. You will work together with business stakeholders from Trading and Benchmark Administration Team (BAT), and with other members of the Equity Derivatives Tech development team to provide solutions that improve efficiency, decrease operational risk, and enable the business to expand and automate their current processes.

What You Will Be Involved In:

• Defining the technical architecture for Equinox, data and process flows from upstream and to downstream systems.
• Liaising with the business stakeholders and business analysts to define new projects, ensure completeness of requirements and agree priorities.
• Designing new functionality.
• Owning iterative delivery of new features to the business.
• Ensuring ongoing system robustness and stability.
• Playing an active role in team’s response to production issues.
• Coaching and mentoring more junior team members to improve the standard of work.

What You Will Bring: This role is for someone who enjoys solving engineering challenges, has experience in building robust and high‑quality solutions, has excellent communication skills and can manage multiple priorities simultaneously. You will be a highly motivated self‑starter who is comfortable taking on new challenges and picking up and learning new technologies. Hands‑on professional software development experience at a senior level. Proven experience of defining technical architectures and leading complex projects through to delivery. Proficiency in object‑oriented and functional programming. Rigorous application of clean code and TDD principles. Demonstrated leadership skills and ability to lead by example. Proactive approach to identifying issues that affect productivity of the team, finding and implementing appropriate solutions, inspiring the team to adapt and grow. Ability to work independently in a fast‑paced and rapidly changing environment.

What Technical Skills You Will Require:

• Proficiency in Java.
• Expertise in component integration via REST APIs and message queues, such as Kafka.
• Thorough understanding of multi‑threaded programming.
• Experience in developing concurrent applications with asynchronous task processing based on actor model (Akka Actors) and streaming (Akka Streams).
• Working knowledge of NoSQL databases, such as Couchbase.
• Ability to create and maintain project builds (Gradle) and CI/CD pipelines (Jenkins, Tekton).
• Experience of building and deploying containerised applications (for instance, using OpenShift).

Education: Bachelor’s degree in computer science or engineering field involving software programming or systems engineering, or experience performing a similar role.

What We’ll Provide You:

• 27 days annual leave (plus bank holidays)
• A discretional annual performance related bonus
• Private Medical Care & Life Insurance
• Employee Assistance Program
• Pension Plan
• Paid Parental Leave
• Special discounts for employees, family, and friends
• Access to an array of learning and development resources

Alongside these benefits Citi is committed to ensuring our workplace is where everyone feels comfortable coming to work as their whole self, every day. We want the best talent around the world to be energized to join us, motivated to stay and empowered to thrive. 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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