Job Vacancy Senior Software Engineer - Office for National Statistics - SEO

United Kingdom

Government Digital & Data

CI/CD

CSS

HTML

Javascript

Software

Job position Senior Software Engineer - Office for National Statistics - SEO

Permanent

As soon as possible

£44k-47k

Hybrid

United Kingdom

Published on 14/05/2026

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The Office for National Statistics (ONS) is hiring a Software Engineer to join its Digital Services team, working on high‑impact platforms like Census 2031 and the next generation of ONS websites.

This is an opportunity to work with modern, cloud‑first technologies and help deliver services that support how the UK understands its economy, population and society.

About the role

You’ll join a multidisciplinary team responsible for the ONS Design System, helping teams across the organisation build consistent, accessible and user‑focused digital services.

Working closely with designers, researchers and stakeholders, you’ll play a key role in improving how services are developed and delivered at scale.

What you’ll be doing

Developing and improving front-end components used across major ONS platforms
Maintaining and enhancing the ONS Design System
Collaborating with designers and researchers to deliver user-centred solutions
Supporting accessibility and performance improvements across services
Contributing to continuous integration and delivery practices (CI/CD)
Identifying and prioritising fixes and improvements with product and delivery teams
Supporting improvements in team processes and ways of working

Candidate profile

What we’re looking for

Experience as a Software Engineer, ideally with front-end focus
Strong skills in technologies such as JavaScript, HTML, CSS and modern frameworks
Experience working in Agile environments and modern development lifecycles
Understanding of CI/CD and test-driven development
Knowledge of web accessibility standards (WCAG)
Ability to collaborate with multidisciplinary teams and represent user needs
Strong problem-solving skills and attention to detail

Working environment

Location: Newport or Titchfield

Interested?
This partner post gives you a quick overview

Click through to the full Civil Service Jobs advert to find out more and apply.

Discover Government Digital & Data

London, England, United Kingdom

> 1000 employees

Corporate / Direct Employer

Government Digital and Data is a community of experts leading digital transformation in government, creating more efficient services that have a meaningful impact on people’s lives. Government Digital and Data professionals benefit from cross-government events and learning. From webinars from the world’s leading innovators to digital upskilling sessions.They enhance our professionals’ skills and capabilities, which ultimately enables them to be a part of the world-leading advancements in digital transformation and government innovation.

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Senior Software Engineer - Office for National Statistics - SEO

Government Digital & Data