Process Design Engineer

Company Description 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!

ALTEN is seeking an experienced Chemical Process Engineer to support major engineering programmes across the nuclear, energy and industrial sectors. The successful candidate will lead process engineering activities through concept, optioneering, feasibility and detailed design phases, supporting the development of complex process and utility systems within large-scale infrastructure projects.

This role requires strong process design capability, systems thinking, and the ability to evaluate and justify engineering solutions through structured decision-making methodologies.

• Lead process engineering studies from concept through detailed design.
• Conduct optioneering and trade-off studies using methodologies such as:
• Pugh Matrix
• Multi-Criteria Decision Analysis (MCDA)
• Gap Analysis
• Design Option Assessments
• Develop and author:
• Process Flow Diagrams (PFDs)
• Piping & Instrumentation Diagrams (P&IDs)
• System Design Descriptions (SDDs)
• Functional Specifications
• Process Design Basis documents
• Support implementation of systems engineering principles throughout the project lifecycle.
• Perform technical assessments and compare alternative design solutions.
• Interface with multidisciplinary engineering teams including systems, mechanical, electrical, civil and safety engineering.
• Participate in design reviews, HAZID, HAZOP and technical governance activities.
• Support stakeholder engagement and technical decision-making.

Qualifications

• Process design experience across water, utility, chemical, thermal, Balance of Plant (BoP), and waste/environmental systems, including treatment, distribution, storage, recovery, and sustainability projects.
• Demonstrable experience in process engineering, system design, equipment specification, PFD/P&ID development, HAZOP/risk assessments, utility and BoP systems, multidisciplinary project delivery, regulatory compliance, and stakeholder management within highly regulated industrial environments.

• A Bachelor’s or Master’s degree in Engineering , or equivalent military experience .
• Chartered Engineer status (or working towards) desirable. Desirable

Preferred Background in:

• Nuclear
• Energy
• Utilities
• Chemicals
• Waste Water
• Hydrogen
• Water Treatment

Additional Information

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.

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