Apprentice Engineering Fitter (Level 3)

We are excited to be looking for a level 3 Mechanical Fitter to be based in our Sellafield Office. The role of a Mechanical Fitter is crucial in the Engineering/Mechanical sector as it involves assembling, installing, maintaining, and repairing machinery and equipment. Mechanical Fitters play a vital role in ensuring the smooth operation of mechanical systems, contributing directly to the company's overall success by maintaining efficient production processes and minimizing downtime. This position fosters team collaboration by working closely with engineers, technicians, and other stakeholders to achieve common goals. The Mechanical Fitter role is essential for keeping machinery operational, meeting production targets, and ensuring quality standards are maintained. Effective collaboration with colleagues, supervisors, and other departments is necessary to achieve operational efficiency and successful project outcomes. This advert will close on 30th April. However, it may be closed sooner should an appropriate number of qualifying candidates be received, we encourage you to submit your application as soon as possible.

• A flexible and proactive self-starter who's passionate about developing new skills?
• Someone who can adapt and prioritise whilst juggling work and study priorities?
• Enthusiastic and curious, and willing to apply your skills to solve real-world problems?
• Empathic and with good listening skills to help you truly understand our clients' requirements?
For this role you must also have:
• Minimum of 5 GCSEs at Grades 5 (c) or above
As part of the application process, you are invited to upload a copy of your CV and a Covering Letter. Please ensure that you file name(s) includes your full name e.g. JoeBlogsCV.pdf You must have the permanent right to work in the UK. In addition to having the permanent right to work in the UK, you are also required to have been ordinarily resident in the UK, the British Overseas Territories, or Crown Dependencies (Channel Islands and Isle of Man) for at least the previous three years before the start and for the duration of the apprenticeship.

Are you looking for the opportunity to study alongside working for a company that is focused on the biggest challenges in the world today? Find out why an apprenticeship with Amentum may be the right opportunity for you.


• What else we provide:
• A flexible workstyle, embracing a hybrid working pattern and supporting those who need to balance work/life commitments a bit differently than others.
• Free single medical cover and digital GP service.
• Reimbursement towards relevant professional development and memberships.
• An inclusive and diverse work environment, embracing the variety of disciplines, cultures, backgrounds and lifestyles of our employees through our Employee Networks.
• A focus on safety, health, and wellbeing, prioritising our people through a supportive culture and positive mental health champion network.
The duration of this apprenticeship will be: 42 months. We want you to bring your whole, authentic self to work! As a Disability Confident employer, we will interview all disabled applicants who meet the minimum criteria for a vacancy. We welcome applications from candidates who are seeking flexible working and from those who may not meet all the listed requirements for a role. If you require further support or reasonable adjustments with regard to the recruitment process (for example, if you require the application form in a different format), please contact us and we'll be happy to help. Your application experience is important to us, and we're keen to adapt to make every interaction even better. We welcome feedback on our recruitment process and if you need more from us before deciding to join our company, please you can contact us here. #AmentumApprentice2026 #AmentumUKEC Compensation Details: 18000 The compensation range or hourly rate listed for this position is provided as a good-faith estimate of what the company intends to offer for this role at the time this posting was issued. Actual compensation may vary based on factors such as job responsibilities, education, experience, skills, internal equity, market data, applicable collective bargaining agreements, and relevant laws. Benefits Overview: Our health and welfare benefits are designed to support you and your priorities. Offerings include:
• Health, dental, and vision insurance
• Paid time off and holidays
• Retirement benefits (including 401(k) matching)
• Educational reimbursement
• Parental leave
• Employee stock purchase plan
• Tax-saving options
• Disability and life insurance
• Pet insurance
Note: Benefits may vary based on employment type, location, and applicable agreements. Positions governed by a Collective Bargaining Agreement (CBA), the McNamara-O'Hara Service Contract Act (SCA), or other employment contracts may include different provisions/benefits.