Band 3 Mechanical Engineering Inspector

ONR is not a Civil Service department, however, we are an arms length body of Department of Work and Pensions.

Job Purpose

As the UK’s independent nuclear regulator, our mission is to ensure safe nuclear for a secure and sustainable future. ONR is changing with the sector: nuclear is set to play a central role in economic growth, energy security, national defence, decommissioning and the development of new technologies. Our role is to enable innovation and growth through proportionate, enabling regulation, while maintaining public confidence that the highest standards of nuclear safety, civil nuclear security, safeguards, and conventional health and safety are met across nuclear facilities in Great Britain.

This is an exciting role at a pivotal time for the UK nuclear sector. You will help regulate work that supports decarbonisation, energy security, national defence, new reactor technologies, fuel manufacture, decommissioning and waste management. A career with ONR offers the opportunity to shape how nuclear technology is used safely and securely, while contributing to a regulator that is becoming more modern, agile and productive.

Principle Responsibilities

As a Mechanical Engineering Inspector your work will be varied and strategically important. You are likely to undertake a range of roles across the sector, from assessing new reactor designs and advanced nuclear technologies to regulating construction, operational and decommissioning sites. Some inspectors undertake planned and reactive inspections at operational facilities, while others assess submissions, manage discrete intervention projects, conduct investigations, commission research, or mentor and develop the next generation of inspectors. Across these activities, you will help ONR deliver proportionate, enabling regulation that supports safe innovation and maintains public confidence.

ONR Mechanical Engineering Inspectors assess and inspect systems that are comprised of a wide range of mechanical engineering equipment, we focus on those systems that are important to safety. Many of the systems that operate within the nuclear industry use proven techniques, such as applying redundancy, diversity, and segregation. These systems require a range of through life tasks to be undertaken, such as design analysis and equipment qualification etc.

We are looking for people with in-depth technical knowledge of nuclear safety significant mechanical systems. This includes their design, installation, commissioning, maintenance, operation and decommissioning. The type of systems you will be expected to show a knowledge of includes the following: ventilation and containment (in particular Alpha containment), lifting, fuel handling, power reactor, chemical and process plant, heat transfer, pressure, and transport package systems. Applicants should be experienced in asset and maintenance management processes. A working knowledge of automation techniques such as, robotics, digitisation or artificial intelligence would be an advantage.

As well as providing guidance and advice in your specialism, you would need to be able to take the lead on the technical assessment of Mechanical Engineering aspects of safety cases and in making judgements on the adequacy of the safety case and site-based interventions.

Extensive training will be provided on the legal and regulatory aspects of the role, along with opportunities to continue to develop the expand and deepen knowledge in the specialist area and on a range of nuclear technologies.

Line Management Responsibilities

None currently, however, there could be an expectation to manage staff in the future.

Location / Travel

This post may be undertaken from the closest ONR office (Bootle, Cheltenham, or London).

You may be eligible for relocation package up to £15,000.This post requires some travel including overnight stays predominantly across the United Kingdom and occasionally abroad. The successful applicant requires a full driving licence which permits the holder to drive in the UK unless reasonable adjustments can be made under the Equality Act 2010.

ONR operates hybrid working (working in the office and or at home) as part of our flexible working policy. There is an expectation that everyone will spend time in the office on a regular basis, recognising that some work is better done face to face. Managers will work with their teams on what works best to meet individual, team, business and organisational needs to enable collaboration, as well as balancing personal choice and wellbeing.

Work with Us

Our colleagues are from all walks of life with varied personal experiences and career journeys into ONR. We want the best people for our roles. As an inclusive employer we value individuals’ contributions, regardless of their age, gender, race, ethnicity, disability, sexual orientation, social background, religion, or belief. Our values ‘supportive, open-mindedness, fairness and accountability’ are central to this. We invest in our people to build capability, resilience, and promote wellbeing in our great teams, underpinned by our inherent focus on inclusion and excellence.

Security Clearance

The successful candidate must hold or can achieve and retain National Security Vetting clearance at SC level.

Person Specification

Inclusion

We are committed to being an inclusive employer and welcome applicants from all backgrounds. We will consider reasonable adjustments to ensure the recruitment process is inclusive and barrier-free. If you require reasonable adjustments as part of your application, please contact ONR HR as soon as possible, preferably before the vacancy closes, by emailing ONR.Human-Resources@onr.gov.uk/ or Stephanie.Glen@onr.gov.uk to discuss further.

We will also offer an interview to disabled people who meet the minimum criteria for applicants who opt into the guaranteed interview scheme.

We recognise we have a role to play in helping those leaving the Armed Forces and have a Veterans guaranteed interview scheme. We offer an interview to Veterans who meet the minimum criteria for applicants who opt into the scheme. Please see eligibility criteria below.

• served for at least one year in His Majesty's Armed Forces (as a Regular or Reserve).
• be in transition from, or ceased to be a member of, His Majesty’s Armed Forces.
• not already be employed by ONR.

This job is broadly open to the following groups:

• UK nationals
• nationals of the Republic of Ireland
• nationals of Commonwealth countries who have the right to work in the UK
• nationals of the EU, Switzerland, Norway, Iceland or Liechtenstein and family members of those nationalities with settled or pre-settled status under the European Union Settlement Scheme (EUSS) (opens in a new window)
• nationals of the EU, Switzerland, Norway, Iceland or Liechtenstein and family members of those nationalities who have made a valid application for settled or pre-settled status under the European Union Settlement Scheme (EUSS)
• individuals with limited leave to remain or indefinite leave to remain who were eligible to apply for EUSS on or before 31 December 2020
• Turkish nationals, and certain family members of Turkish nationals, who have accrued the right to work in the Civil Service

Further information on nationality requirements (opens in a new window)

For more information about this vacancy please contact Mike Webb.

E – Michael.Webb@onr.gov.uk

How To apply

Please submit your application through the recruitment portal.

The closing date for receipt of applications is 30th September 2026 at 11:45

Your application should include:

• CV to include a full record of your education and professional qualifications and a full employment history.
• A suitability statement (maximum of 800 words) highlighting how you meet the ‘essential skills and experience” required for the role, which will be used at shortlisting in conjunction with your CV.
• Where applicable highlight if you have any experience under ‘desirable skills and experience’ within the application form.

Throughout our shortlisting process, we will make decisions about your capability to do the job, based on evidence you provide against the essential criteria (and the desirable if applicable).

Artificial Intelligence

Artificial intelligence can be a useful tool to support your application, however, all examples and statements provided must be truthful, factually accurate and taken directly from your own experience. Where plagiarism has been identified (presenting the ideas and experiences of others, or generated by artificial intelligence, as your own) applications may be withdrawn and internal candidates may be subject to disciplinary action. Please see our candidate guidance (opens in a new window) for more information on appropriate and inappropriate use.

Important guidance when providing CV’s – please upload text-based CVs with no graphics or pictures to ensure the anonymisation function works correctly.

Please note - if whilst completing your application, you use special characters such as (‘; “- _ *) within your examples, Hireserve will convert these characters into symbols. We are currently unable to change this.

Whilst these examples will appear on your application, this will not prevent it from being reviewed at the shortlisting stage.

Please submit your application through the recruitment portal on the ONR website directly by clicking onto the link above apply at advertisers site where you can also download full job description.

Feedback will only be provided if you attend an interview or assessment.