Process Engineer
Confirmed on the employer's own hiring board on Oct 25, 2026. First seen by Alion on Oct 23, 2026. ALTEN scores B on the Alion truth index.
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 seeking a Process Engineer to support the design and delivery of critical systems on a major UK nuclear project. This position is ideal for candidates with either a Chemical Engineering background or demonstrable experience in the process design of mechanical plant and equipment within highly regulated industries such as Nuclear, Energy, Power Generation, Oil & Gas, Chemicals, Water Treatment, or Pharmaceutical sectors.
The successful candidate will contribute to the development of process solutions, equipment specifications, and engineering documentation for Balance of Plant and utility systems, ensuring compliance with nuclear safety and quality standards.
Key Responsibilities:
- Develop and review process engineering deliverables including PFDs, P&IDs, calculations, datasheets, and technical specifications.
- Support the design and integration of utility, water treatment, chemical dosing, thermal management, and mechanical process systems.
- Specify and assess process equipment including pumps, tanks, filters, heat exchangers, valves, and associated package systems.
- Participate in design reviews, HAZOPs, risk assessments, and multidisciplinary engineering meetings.
- Manage technical interfaces with mechanical, piping, civil, electrical, and control & instrumentation teams.
- Support procurement activities, vendor reviews, and commissioning preparation.
- Ensure engineering solutions comply with safety, quality, and regulatory requirements.
Required Skills:
- Experience delivering process engineering projects within highly regulated industries.
- Knowledge of process design principles and engineering documentation.
- Experience with PFDs, P&IDs, process calculations, equipment sizing, and system specifications.
- Experience of either:
- Chemical process systems and process plant design; or
- Mechanical process equipment and utility systems design.
- Understanding of engineering risk assessment and safety methodologies (e.g. HAZOP, ALARP).
- Strong communication and stakeholder management skills.
Required Qualifications:
- A Bachelor’s or Master’s degree in Engineering, or equivalent military experience.
Desirable Skills:
- Nuclear sector experience.
- Experience with water treatment, chemical dosing, utility distribution, steam, compressed air, or cooling water systems.
- Chartered Engineer status or working towards professional accreditation.
- Knowledge of UK nuclear quality and regulatory requirements.
Why join us?
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.
In short you get:
- A personalised career path and a rewarding management style
- A huge diversity of engineering projects and industries
- Private Medical Insurance
- Cycle & Tech Scheme
- 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 Gov.UK. 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.