Senior Front-End Engineer

2 weeks ago

London, Greater London, United Kingdom Amber Labs Full time £60,000 - £100,000 per year

Location:
Hybrid – 2 days per week in the MOD offices in London and / or Bristol

Contract:
Salaried 12-month FTC with full company benefits (NOT day rate)

Clearance:
Must hold active SC clearance and have UK government / public sector experience

  • We are unable to consider candidates who don't have SC***

The Company
At
Amber Labs
, we're a cutting-edge UK and European technology consultancy that empowers autonomy, promotes experimentation, and drives rapid learning to deliver exceptional value to our clients. Collaboration sits at the heart of our culture — every team member, regardless of role, works together to minimise risk and accelerate delivery. Our teams consist of highly skilled engineers, designers, analysts, and consultants dedicated to building world-class digital services for government and enterprise clients.

About The Role
We're seeking an experienced
Senior Front-End Engineer
to lead the development, modification, and maintenance of the front-end elements that users interact with across our government service platforms.

You'll work in multidisciplinary teams, collaborating with designers, developers, and user researchers to deliver accessible, performant, and standards-compliant services that meet the needs of real users and align with government digital standards.

This role is about setting the bar for front-end quality, defining best practices, ensuring accessibility and performance, and applying modern development techniques. You'll champion progressive enhancement, responsive design, and usability across multiple browsers and devices.

Key Responsibilities

  • Lead front-end development across multiple digital service projects.
  • Build accessible, responsive user interfaces that meet GDS accessibility and usability standards.
  • Ensure products are built with modern web development techniques and principles.
  • Collaborate with multidisciplinary teams, including UX designers, back-end developers, and testers.
  • Maintain high code quality through code reviews, testing, and documentation.
  • Optimise web performance and maintain browser/device compatibility.
  • Mentor junior developers and promote a culture of continuous improvement.
  • Contribute to design system evolution and reusable component libraries.

Key Skills & Experience

  • Proven experience as a front-end developer in production and prototype environments.
  • Strong proficiency in HTML5, CSS3, and JavaScript (including , ReactJS, ExpressJS, Mongoose).
  • Experience with templating and UI frameworks such as Nunjucks, Freemarker, Bootstrap, LESS, and SASS.
  • Working knowledge of CI/CD tooling such as Git, GitLab CI, Jenkins, SonarQube, Nexus, and Artifactory.
  • Deep understanding of accessibility, progressive enhancement, and performance optimisation.
  • Experience building services that perform efficiently across multiple devices and browsers.
  • Strong understanding of UX principles and user-centred design.
  • Experience working in Agile delivery teams.

Clearance Requirement

  • Must hold active SC clearance
  • We are unable to consider candidates requiring visa sponsorship at this time.

Benefits

  • Competitive salary and performance-based bonus structure.
  • Opportunity to work on impactful government digital services.
  • Hybrid and flexible working arrangements.
  • Private medical insurance (Aviva).
  • Company pension plan (Nest).
  • 25 days annual leave plus UK bank holidays.
  • Access to Perkbox – employee discounts, perks, and wellbeing resources.
  • Inclusive and collaborative company culture that values experimentation and innovation.
  • Choice of device – PC or Mac.

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