Senior UI Engineer — Accessible, Scalable Interfaces

IBU; Greater London; On-site; GBP 65,000 - 100,000; Full time

Job summary

IBU is seeking a frontend UI Engineer to turn business requirements into deliverable UI work and ship iteratively to production.

You will design UI solutions with strong accessibility and semantic HTML, build with vanilla JS and Web Components, and contribute to shared UI libraries. You will champion standards and help reduce technical debt while supporting production support and continuous improvement.

Qualifications

• Strong knowledge of semantic HTML and accessible UI design.
• Experience building with vanilla JS and Web Components.
• Ability to design UI with layout, hierarchy, and interaction patterns.
• Experience consuming RESTful APIs and handling auth/errors.

Responsibilities

• Turn business requirements into deliverable UI work (stories/tasks), shipping iteratively to production.
• Design UI solutions (layout, hierarchy, interaction patterns, error/empty/loading states) that meet user needs.
• Build accessible UI using semantic HTML, CSS, vanilla JS and Web Components.
• Contribute to shared UI libraries/patterns and the documentation that drives consistent adoption (everyone owns the libraries).
• Champion standards: semantic HTML, accessibility, UI patterns; raise capability via pairing, reviews, workshops and documentation.
• Identify and address technical debt alongside delivery.
• Participate in production support and continuous improvement.

Skills

Semantic HTML

Accessible UI

UI design judgment

RESTful APIs

Collaboration

Tools

Web Components

Vanilla JS

Job description

IBU is seeking a frontend UI Engineer to turn business requirements into deliverable UI work and ship iteratively to production.

You will design UI solutions with strong accessibility and semantic HTML, build with vanilla JS and Web Components, and contribute to shared UI libraries. You will champion standards and help reduce technical debt while supporting production support and continuous improvement.