Senior Frontend Architect & Fullstack Lead (Hybrid)

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

Benefits offered by this job

27 days annual leave (plus bank hols)

Discretionary annual bonus

Private Medical Care & Life Insurance

Employee Assistance Program

Pension Plan

Paid Parental Leave

Learning and development resources

Job summary

Citi is seeking a Senior Front End (UI) Software Engineer to lead the architecture and implementation of scalable, secure web applications. You will mentor teams, drive design systems, and align frontend delivery with enterprise standards across fullstack integration.

The role emphasizes modern frameworks (React/TypeScript), accessibility (WCAG 2.1 AA), and collaboration with product, UX, and backend teams in a hybrid work environment.

Qualifications

• Extensive experience in UI/Frontend engineering and fullstack delivery.
• SME in React/TypeScript ecosystem with strong backend integration.
• Experience in enterprise web app architecture and design systems.
• Proven track record delivering complex projects in Agile/Scrum.
• Strong leadership, mentoring, and cross-functional collaboration.
• Clear, professional communication with technical and executive stakeholders.

Responsibilities

• Architect and lead Front End/UI initiatives with enterprise standards.
• Drive UI libraries, design systems, testing automation, and CI/CD practices.
• Lead responsive, accessible web apps using modern frameworks (React/TS, Next.js/Angular).
• Design and optimize REST/GraphQL APIs, BFF layers, and microservices integration.
• Collaborate with product, UX, and backend teams to deliver value.
• Mentor teams, solve complex problems, and ensure secure, scalable delivery.

Skills

Frontend Architecture

React/TypeScript

UI Design Systems

API Integration

Leadership

Agile/Scrum

Tools

Node.js

Java/Spring Boot

Python

REST/GraphQL APIs

Job description

Citi is seeking a Senior Front End (UI) Software Engineer to lead the architecture and implementation of scalable, secure web applications. You will mentor teams, drive design systems, and align frontend delivery with enterprise standards across fullstack integration.

The role emphasizes modern frameworks (React/TypeScript), accessibility (WCAG 2.1 AA), and collaboration with product, UX, and backend teams in a hybrid work environment.