Mechanical Engineer - Pressure Systems

ALTEN is a global engineering and technology consultancy operating across over 35 countries worldwide. We partner with industry leaders across sectors including Aeronautics, Aerospace, Defence, Naval, Automotive, Energy, Rail, IT and many more to deliver innovative engineering solutions that drive technological advancement & support sustainable transformation.

Our teams of passionate and agile engineers work on cutting‑edge projects that shape the future of technology and sustainability. At ALTEN, we empower talented engineers to innovate, solve complex challenges, and deliver impactful solutions that build tomorrow’s world—today.

Join us and start building tomorrow’s world today!

We are looking for a Mechanical / Pressure Systems Engineer to support structural integrity and pressure equipment compliance activities across major nuclear programmes in the UK.

You will play a key role in ensuring pressure systems, vessels, and mechanical assets meet stringent regulatory and design code requirements, working within complex, multidisciplinary project environments.

Key Responsibilities:

• Deliver structural integrity and pressure systems compliance activities across nuclear assets
• Support design, assessment, and verification of pressure equipment to ASME and/or RCC-M codes
• Contribute to conformity assessment and regulatory compliance activities (UK nuclear standard)
• Liaise with regulators, supply chain partners, and internal engineering teams
• Provide technical input into pressure boundary integrity and mechanical design reviews
• Support manufacturing, installation, inspection, and lifecycle integrity activities
• Work within multi‑disciplinary engineering teams across large‑scale infrastructure projects

Required Skills:

• Background in Mechanical Engineering or related discipline
• Experience in pressure systems, pressure vessels, or structural integrity engineering

Exposure to regulated industries such as:

• Nuclear
• Oil & Gas
• Experience working to ASME
  , RCC-M, or similar pressure design codes
• Understanding of conformity assessment or regulatory compliance frameworks
• Experience in large‑scale engineering or asset management projects
• Comfortable working in matrix / multi‑stakeholder environments
• Knowledge of UK nuclear industry standards and regulators (e.g. ONR)
• Multi‑cultural / international project experience

Required Qualifications:

• A Bachelor’s or Master’s degree in Engineering
  , or
  equivalent
  military experience.
• Chartered Engineer (CEng / IMechE) preferred, or working towards chartership
• Strong communication and stakeholder management skills
• Ability to influence technical teams and external partners
• Proactive, solutions‑focused approach to engineering challenges
• Ability to work independently while contributing to team delivery goals
• Awareness of technical limitations and when to elevate or involve specialists

We bring together entrepreneurial, tech‑driven people to deliver innovative solutions for leading companies.

At ALTEN, you’ll work on exciting projects, supported by ongoing learning, mentoring, and clear career development tailored to your goals.

Join a passionate team and help build tomorrow, today.

• A personalised career path and a rewarding management style
• A huge diversity of engineering projects and industries
• Private Medical Insurance
• Employee assistance programme
• Life insurance & Pension Scheme
• Social atmosphere, regular gatherings &team buildings
• Flexible way of working (role dependent)

We are proud to support the Armed Forces Covenant & actively encourage applications from members of the Armed Forces community, including veterans, reservists, service leavers, and military spouses/partners. We recognise the value of military skills and experience and are committed to ensuring that no applicant is unfairly disadvantaged during our recruitment and selection processes.

ALTEN is committed to fostering a diverse and inclusive workplace and values the strength that comes from a global mix of backgrounds and perspectives. We welcome applications from all suitably qualified candidates, regardless of background or protected characteristics under the Equality Act 2010. If you require any reasonable adjustments during the recruitment process, please let us know.

This role may require you to have or be willing to go through Security Clearance. As part of the onboarding process candidates will be asked to complete a Baseline Personnel Security Standard; details of the evidence required to apply may be found on the government website  If you are unable to meet this and any associated criteria, then your employment may be delayed, or rejected .

Details of this will be discussed with you at interview.