Senior Frontend Engineer: Accessible, Secure UIs

The National Archives; London Borough of Richmond upon Thames; Hybrid; GBP 54,000 - 66,000; Full time

Benefits offered by this job

Pension

On-site gym

Sports & social club facilities

Discounted on-site cafe

Training & development

Job summary

The National Archives is seeking a Senior Frontend Developer to deliver accessible, high‑quality user interfaces for the Access Your Records and Find Case Law platforms. You will lead frontend work, coach junior colleagues, and collaborate with designers, researchers and suppliers to turn prototypes into production features.

You will apply GOV.UK Design System standards, champion accessibility to WCAG AA, and help define frontend patterns, tooling and security practices while working in a hybrid

Qualifications

• Production-quality server-side rendered frontends.
• HTML, CSS preprocessors (Sass) and JavaScript mastery.
• Web performance optimization and network fundamentals.
• Web accessibility to WCAG AA, using a design system.
• Security mindful with frontline security practices.
• Automated testing across unit, integration, visual, accessibility and performance.
• Ability to lead, review code, and mentor teammates.

Responsibilities

• Build accessible, performant frontends following GOV.UK Design System.
• Complete features end-to-end, design automated testing plans, ensure accessibility.
• Develop and expand shared component libraries.
• Own frontend standards and tooling, including linting and CI/CD alignment.
• Take ownership of frontend security, performance and maintainability.
• Mentor and coach developers, leading code reviews and pair programming.
• Work with designers, researchers, backend developers and stakeholders to turn prototypes into working software.
• Support production services during working hours as part of the in-house rota.

Skills

HTML

CSS/SASS

JavaScript

WCAG 2.2 AA accessibility

Agile methodologies

Design systems

Tools

GOV.UK Design System

Django

Flask

Storybook

Job description

The National Archives is seeking a Senior Frontend Developer to deliver accessible, high‑quality user interfaces for the Access Your Records and Find Case Law platforms. You will lead frontend work, coach junior colleagues, and collaborate with designers, researchers and suppliers to turn prototypes into production features.

You will apply GOV.UK Design System standards, champion accessibility to WCAG AA, and help define frontend patterns, tooling and security practices while working in a hybrid