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

Citigroup Inc.; Greater London; Hybrid; GBP 90,000 - 130,000; Full time

Benefits offered by this job

27 days annual leave

Discretional annual bonus

Private Medical Care & Life Insurance

Pension Plan

Parental Leave

Job summary

Citigroup Inc. in London seeks a Senior UI Software Engineer (Vice President) to own the frontend for FX trading platforms, delivering robust, user-friendly GUIs for traders and integrating AI-assisted tooling.

You will work across globally distributed teams, enforce interoperability standards with FDC3, and help guide architecture, testing, and performance optimization in a fast-paced environment.

Hybrid work up to two days per week with strong compensation and benefits.

Qualifications

• Strong experience delivering complex web platforms in production.
• Expert-level TypeScript, React, HTML5, CSS, and JavaScript (ES6+).
• Experience with desktop containers: Chromium, Electron, or OpenFin; FDC3 interoperability.
• Experience with real-time messaging systems: Kafka, Solace, or Tibco.
• Familiarity with CI/CD pipelines and Agile methodologies.

Responsibilities

• Design and develop high-quality trading GUIs for internal and external traders.
• Define interoperability standards across web apps using FDC3 and REST/WebSocket APIs.
• Lead AI integration in development lifecycle.
• Drive performance engineering and low-latency data delivery.
• Mentor junior engineers and contribute to team growth.

Skills

TypeScript

React

HTML5

CSS

JavaScript

Web Workers

Memory management

Tools

Chromium

Electron

OpenFin

FDC3

Kafka

Solace

Tibco

Jenkins

Job description

## FX Client Platforms - Senior UI Software Engineer (Vice President)Apply: Hybrid: London United Kingdom: Full time: Posted Today: End Date: November 1, 2026 (9 days left to apply): 261002996**FX Client Platforms - Senior UI Software Engineer (Vice President)****About the Role**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 toolsThis 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 resourcesVisit 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------------------------------------------------------## **Job Family Group:**Technology------------------------------------------------------## **Job Family:**Applications Development------------------------------------------------------## **Time Type:**Full time------------------------------------------------------## **Most Relevant Skills**Please see the requirements listed above.------------------------------------------------------## **Other Relevant Skills**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.*