Senior Test Engineer

Location: The locations for this role are Newport, Titchfield (Fareham) and Manchester.

We operate a flexible hybrid working model across the UK, with colleagues linked to one of our contractual locations and working between office and remote throughout the week. As part of the hybrid working arrangement there is a 40% minimum office attendance requirement.

Salary: £41,364-£46,654 Plus a role specific skills allowance of £750.00 (non-pensionable and non-contractual) may be payable.

Working Patterns: All our vacancies are offered as a flexible option of Full time, Part time, Flexible working, Job Share

Closing Date: Apply before 11:55pm on Tuesday 2nd September 2025

Are you ready to lead innovation in testing and make a real impact with data that matters? We're looking for a Senior Test Engineer to drive high-quality, high-impact solutions at the Office for National Statistics.

In this role, you'll lead system, integration, End to End (E2E), and acceptance testing—refining services through iterative design and championing precision and innovation. If you're passionate about quality, collaboration, and continuous improvement, this is your chance to lead with purpose.

What You’ll Do

• Design and deliver robust testing frameworks across system, integration, E2E, and acceptance levels.
• Shape requirements and lead test planning, execution, and defect management.
• Collaborate with developers, suppliers, and stakeholders to ensure seamless delivery.
• Build and maintain automated test harnesses and adapt frameworks to evolving needs.
• Mentor testers and promote best practices across ONS’s testing community.

What You’ll Bring

• Strong coding skills (expertise in one or more languages).
• Experience with risk-based testing and automation.
• Ability to translate complex requirements into meaningful test coverage.
• Excellent communication and stakeholder engagement.
• A proactive mindset and agile delivery experience.

Why Join ONS?

You’ll be part of a forward-thinking team shaping the future of data and analysis in the UK. We value innovation, collaboration, and continuous learning—helping you grow while making a national impact.

In return we offer you:

✔Hybrid working and flexi-time so you can work around your life, not the other way around!

✔A market leading pension scheme - our employer contribution rate is around 29%

✔ A choice of working patterns *for every role* full-time, part-time, job-share.

✔Maternity, adoption or shared parental leave of 26 weeks full pay (subject to qualifying criteria)

✔Opportunities to learn new technology & skills on the job, utilising blocked out Protected Learning Time in your weekly schedule and taking advantage of the support of our Communities of Practice

✔Employee Assistance Programmes

✔Diversity Network Groups

✔Mental Health Allies

✔Civil Service Sports and Social club

✔Generous holiday allowance – 25 days annual leave, rising to 30 days after 5 years service in addition to 9 public holidays

For more information about this role, a full application pack, and to apply, please hit APPLY to be taken to Civil Service Jobs.