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

Citi; Greater London; Hybrid; GBP 90,000 - 120,000; Full time

Benefits offered by this job

27 days annual leave (plus bank hols)

Discretional annual bonus

Private Medical Care & Life Insurance

Employee Assistance Program

Pension Plan

Parental Leave

Special employee discounts

Learning and development resources

Job summary

Citi London is seeking a Senior Applications Developer to lead the front-end effort for FX pricing platforms. You will own the full software lifecycle, drive AI-assisted coding, and guide UI architecture across distributed teams.

The role focuses on high-throughput React applications, real-time messaging, and cross-application interoperability, with a hybrid work model and a strong compensation package.

Qualifications

• 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

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.
• 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

Skills

TypeScript

React

HTML5

CSS

JavaScript

Web Workers

OpenFin

FDC3

Kafka

CI/CD

Jenkins

Agile

TDD

AI tooling

Tools

OpenFin

Chromium

Electron

GitHub Copilot

Job description

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 tools

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 ourGlobal Benefitspage 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.

Job Family Group

Technology

Job Family

Applications Development

Time Type

Full time

Most Relevant Skills

Please see the requirements listed above.

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.