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# Front End Engineer

- **Company:** INTERACTIVE BROKERS LLC
- **Location:** London, UK
- **Experience:** Expert
- **Salary:** £38,536.0
- **Contract:** Permanent contract
- **Skills:** Clean Code Principles, JavaScript (Programming Language), Artificial Intelligence, HTML5, Browser Compatibility, Cascading Style Sheets (CSS), Software Quality, Data Structures, Design of User Interfaces, Commercial Software, Responsive Web Design, TypeScript, User-Centered Design, Web Applications, WebSocket, ReactJS, Large Language Models, Cypress (Programming Language), Vue.js, Build Management, Webpack, AngularJS, Material UI, Information Technology, Playwright, Real Time Data, Build Tools, Front End Software Development, React Redux, JestJS
- **Published:** October 1, 2026
- **Apply:** https://www.adzuna.co.uk/jobs/details/5904316576

## About the Role

* 5+ years of commercial software development experience, with a strong emphasis on single-page application (SPA) development
 * Deep, production-level experience with at least one major JavaScript framework - Vue3 (ideally), Angular or React; experience with more than one is a strong plus
 * Strong TypeScript skills; able to design and build robust, well-typed libraries and components
 * Solid command of HTML5 and CSS3, including responsive design, accessibility and cross-browser compatibility
 * Experience with modern front-end tooling: build systems (Vite, rollup), testing frameworks (Vitest, Playwright) and CI/CD pipelines
 * Familiarity with AI concepts and tooling - including AI-assisted development, LLM integration in web applications; practical experience is a strong plus
 * A solid grounding in core computer science fundamentals: data structures, algorithms and system design
 * Experience with real-time data (WebSockets, SSE or similar) is a significant advantage in this role
 * Good to have experience with AG Grid, Prime Vue, UI state management systems such as Pina, Redux, and UI design systems.
Soft Skills & Ways of Working

 * Strong communicator, equally comfortable in a detailed technical discussion with senior engineers and a user-centred design discussion with product experts
 * Able to pick up new business domains quickly, asking sharp questions and building understanding fast
 * Demonstrates strong personal integrity and accountability
 * Open to and actively seeks constructive feedback
Academic

 * A degree in Computer Science, Engineering or a related STEM discipline; a postgraduate qualification is a plus

Personal Attributes

 * A passionate advocate for clean, concise and maintainable code
 * A natural technical leader who earns the trust and confidence of peers
 * A collaborative team player - confident enough to admit mistakes, comfortable leading and following in equal measure, always willing to learn as well as teach
 * Someone who thrives in a fast-paced, high-energy environment and takes genuine ownership of outcomes

## Description

* Design and build scalable web applications within the VueJs ecosystem (VueJs, Vuex, Pinia, Vite, Cypress, webpack)
 * Owning and building high-traffic applications with a focus on speed and user experience
 * Proactively identifying and implementing improvements to architecture, performance and code quality
 * Collaborating with colleagues and peers to ideate, plan, and organize large-scale projects
 * Contribute and help maintain our company-wide Vue UI Component Library
 * Set direction and partner with other frontend engineers to implement new technologies