Process Design Engineer

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.

Key Responsibilities:

• 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.

Required Skills:

• 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.

Required Qualifications:

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

Desirable Skills:

Preferred Background in:

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

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