FX Client Platforms - Senior UI Software Engineer (Vice President)

We are seeking a Senior Applications Developer to join a team delivering pricing solutions for the Foreign Exchange (FX) business. You will cover the full software development lifecycle — analysis, design, implementation, and testing — while providing technical leadership to the team.

Primary Responsibilities

Design and develop high-quality trading GUIs providing compelling user experiences for internal and external traders

Define and enforce interoperability standards across web applications using FDC3, and REST/WebSocket APIs. Experience with OpenFin or Interop is desirable but not essential.

Drive AI integration within the development lifecycle — including AI-assisted coding, automated test generation, and intelligent monitoring

Influence performance engineering across the UI stack: profiling, rendering optimisation, bundle analysis, and low-latency data delivery

Contribute and influence architecture decisions for large-scale front-end systems, including monorepo governance and design system adoption across globally distributed teams

Champion best practices in TDD, code review, and AI-assisted development tooling (e.g., GitHub Copilot)

Liaise with UI leads, UX, Product, and Sales groups to translate business requirements into robust technical solutions

Mentor junior engineers and contribute to team growth and delivery standards

Essential Experience

Solid experience building and deploying complex web application platforms in production

Expert-level proficiency in TypeScript, React, HTML5, CSS, and JavaScript (ES6+)

Demonstrated experience profiling and optimising high throughput React applications (Web Workers, virtual rendering, memory management)

Experience with desktop containers: Chromium, Electron, or OpenFin; familiarity with FDC3 for cross-application interoperability

Experience with real-time messaging systems: Kafka, Solace, or Tibco

Experience with CI/CD pipelines (Jenkins or equivalent) and Agile methodologies

Strong communication skills with experience in globally distributed teams

Desirable

Experience building real-time trading platforms

FX or Fixed Income product knowledge

Java REST API development experience

Familiarity with AI-assisted development tools

This job description provides a high-level review of the types of work performed. Other job-related duties may be assigned as required.

What we’ll provide you

By joining Citi London, you will not only be part of a business casual workplace with a hybrid working model (up to 2 days working at home per week), but also receive a competitive base salary (which is annually reviewed), and enjoy a whole host of additional benefits such as:

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

Visit our Global Benefits page to learn more.

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.

#LI-AP2

Technology

Applications Development

Full time

Please see the requirements listed above.

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. View Citi’s EEO Policy Statement and the Know Your Rights poster.