Senior Design Substantiation Engineer – Nuclear Safety

Amentum; United States; Hybrid; USD 87,000 - 128,000; Full time

Benefits offered by this job

Hybrid work

Job summary

Amentum are recruiting a Senior / Principal Engineering Design Substantiation Engineer (EDS) to author Substantiation Reports which underpin the design of process systems. You will work with cross‑discipline teams, ensure safety case alignment, and liaise with suppliers and stakeholders.

Hybrid work is available, but may require visits to Chorley, Aldermaston, and Twyford, with main location in Chorley or Aldermaston.

Qualifications

• Experience in design substantiation and safety case involvement for regulated industries.
• Ability to author Design Substantiation Reports (DSR) and substantiate SSFR against SSC.
• Excellent written and oral communication; report writing and presentations.

Responsibilities

• Authoring mechanical, nuclear substantiation documentation and DSRs.
• Interrogating the Engineering Schedule and evidencing SSFR against systems.
• Reviewing Safety Case and supplier documents to identify evidentiary gaps.
• Liaising with internal/external designers and vendors for information gathering.
• Interfacing with Human Factors, Fire Safety, Criticality, Radiological and Technical Authority.

Skills

Questioning attitude

Guiding internal/external designers

Strong communication

Education

Degree with honours in a related subject

Chartered Engineer Status or equivalent

Job description

Amentum are recruiting a Senior / Principal Engineering Design Substantiation Engineer (EDS) to author Substantiation Reports which underpin the design of process systems. You will work with cross‑discipline teams, ensure safety case alignment, and liaise with suppliers and stakeholders.

Hybrid work is available, but may require visits to Chorley, Aldermaston, and Twyford, with main location in Chorley or Aldermaston.