Senior CS&A Engineer

Amentum designs and delivers civil and structural engineering solutions for complex environmental and defence projects across the United Kingdom. Senior Civil and Structural (CS&A) Engineers play a critical role in ensuring safety‑critical designs meet regulatory and operational requirements.

Responsibilities

• Lead the development of civil and structural engineering designs and solutions across the full project lifecycle.
• Prepare technical documentation, specifications and design justifications for safety‑critical systems.
• Oversee, verify and prepare safety case inputs such as Safety Functional Requirements (SFRs), Structural Design Method Statements (SDMSs), Design Substantiation Reports (DSRs), Interpretive Reports, Basis of Design, Analysis Reports, Calculations, CDM documentation, Material Specifications, Scopes of Work and Technical Reports.
• Ensure implementation of engineering designs complies with standards and regulatory requirements.
• Manage and review deliverables from junior engineers to guarantee compliance and quality.
• Provide technical guidance and mentorship to less experienced engineers.
• Interface with clients, regulators and project stakeholders on technical matters.
• Ensure designs meet nuclear safety, cybersecurity and quality standards.
• Support project planning, cost estimating and risk management activities.
• Produce high‑quality technical reports.
• Build and maintain relationships with clients, partners and peers.

Qualifications / Requirements

• Chartered or near‑chartered engineer status with a relevant professional body (Amentum will support you).
• Knowledge of civil engineering principles, design tools and relevant guidelines, standards and practices.
• Ability to simplify complex problems.
• Experience using finite element modelling software and associated post‑processing software, including validation and verification of tooling and outputs.
• Good knowledge of health and safety legislation and best practice.
• Understanding of the use of design tools within a BIM environment.
• Experience producing and checking high‑quality technical deliverables.
• Motivated team member able to meet deadlines and communicate project progress.
• Strong communication skills and the ability to articulate information to a broad range of stakeholders.
• Committed to continuous professional development.

Benefits

• Competitive package.
• UK employees receive free single medical cover and digital GP service.
• Family‑friendly benefits including enhanced parental leave pay and free membership of employee assistance and parental programmes.
• Reimbursement towards relevant professional development and memberships.
• Flexibility & Work Location: Hybrid working is available. Positions are based across our UK office network in Stockton, Newcastle, Bristol, Gloucester, Glasgow, Westlakes and Warrington.

EEO & Accommodations

• EEO including Disability/Protected Veterans Labor Laws Posters.
• Amentum is a Disability Confident employer and will interview all disabled applicants who meet the minimum criteria for a vacancy.
• We welcome applications from candidates seeking flexible working and from those who may not meet all listed requirements for a role.
• If you require reasonable adjustments to the recruitment process (e.g., an application form in a different format), please contact the team.
• If you need a reasonable accommodation for any part of the employment process, please contact us by email at TAOps@amentum.com and let us know the nature of your request.

Contact

If you need assistance, please reach out to workdaycandidateaccounts@amentum.com.