Principal Process Engineering Responsible Engineer

Company: Costain Group PLC

Location: Whitehaven

Posted: May 20th, 2026

Process Engineering Responsible Engineer (RE)

We are looking to hire a Process Engineering Responsible Engineer (RE) who will manage the process design and engineering aspects of the programme, ensuring all specific nuclear licensed site requirements are met.

Costain provides engineering services to the Energy, Water, Transport, Nuclear and Defence sectors. The Process Engineering Discipline primarily works on Energy Transition, Energy Resilience and municipal wastewater treatment projects across the full engineering project lifecycle including Feasibility, Concept, FEED and EPC/EPCm Detailed Design project phases.

The Process Engineering Responsible Engineer (RE) will manage the process design and engineering aspects of the programme, ensuring all requirements for the nuclear licensed site are met. This role requires an experienced process engineer with extensive knowledge of nuclear facility design to lead the process team on assigned engineering design projects.

The RE will manage both internal engineers and external consultants or subcontractors, ensuring that designs are delivered on time, within budget, and in technical compliance. It is essential that all designs are safe, sustainable, and efficient to construct. A key responsibility is ensuring that management systems, including digital processes, are followed to provide stakeholder assurance.

Work on a hybrid, site‑based role in Cumbria – typically 3-4 days a week with occasional office attendance in Risley as per business needs. The role is suitable for someone based in the Cumbria region.

Eligible candidates must be able to obtain security clearance (British National or 5 years UK residency).

Responsibilities

Essential Knowledge, Skills, and Experience

Desirable

Essential Qualifications

Desirable Qualifications

Equal Opportunity Statement

A Disability Confident employer will generally offer an interview to any applicant that discloses they have a disability and meets the minimum criteria for the job as defined by the employer.

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