Senior Java and AI Engineer - Hybrid FX Tech Lead

Citi Group; Greater London; Hybrid; GBP 90,000 - 130,000; Full time

Job summary

Citi London is seeking a Senior Java Engineer to shape a team delivering next‑level FX technology solutions. You will write production‑grade Java with Spring, contribute to low‑latency path optimizations, and mentor colleagues in a hybrid London setting.

You will work across FX technology, collaborating with sales, trading, quants and product to translate需求 into scalable, data‑driven systems, while maintaining strong documentation and adherence to Citi policies.

Qualifications

• Master's degree or above in a STEM discipline.
• Proven software engineering experience and systems knowledge.
• Hands on Experience in Java, Spring with ultra-low-latency development practices.
• Proven understanding of FX highly preferred.
• Familiar with AI coding tools like Devin, Claude code and Codex and delivered production grade applications.
• Strong SQL / Databases.
• Strong understanding of Messaging tech like Kafka, Solace, MQ.
• Ability to design scalable, data-driven solutions and troubleshoot issues.

Responsibilities

• Hands-on development of cross-border FX payments and custody solutions using cloud-native tech and CI/CD.
• Drive design and development of system architecture with end-users and teams.
• Ensure staff follow Citi policies and maintain comprehensive documentation.
• Develop features across design, development and testing phases.
• Provide 3rd line production support and mentor junior members.
• Collaborate with sales, trading, quants and product to translate needs into data-driven solutions.

Skills

Mentoring

Stakeholder communication

Cross-team collaboration

Problem solving

Education

Master's degree in STEM

Tools

Java

Spring

Kubernetes

OpenShift

Kafka

Solace

MQ

KDB

Job description

Citi London is seeking a Senior Java Engineer to shape a team delivering next‑level FX technology solutions. You will write production‑grade Java with Spring, contribute to low‑latency path optimizations, and mentor colleagues in a hybrid London setting.

You will work across FX technology, collaborating with sales, trading, quants and product to translate需求 into scalable, data‑driven systems, while maintaining strong documentation and adherence to Citi policies.