Senior/Principal Mechanical Engineer Must have British Nationality in order to obtain SC Clearance Our nuclear and defence client is looking for a Senior/Principal engineer with Design Substantiation and Safety case experience with nuclear and/or Defence experience to author Mechanical Design substantiation reports which will underpin the design of the various processes systems. The role will be responsible for reviewing and producing substantiation reports to build the required evidence to support the Safety Case They will contribute to the delivery of Work Interrogating the Engineering Schedule and evidencing claims made against Systems, Structures, and Components (SSC) in the documentation. Reviewing the updated designs inline with the Safety Case Documentation to identify any shortfalls Assess quality of substantiation evidence and identify where supplementary or supporting evidence is required Authoring nuclear substantiation documentation, including Design Substantiation Reports (DSR) providing the assurance and evidence to enable confidence in our technical solutions. Liaising with both internal and external designers and equipment vendors to gather information. Interfacing with other stakeholders such as Human Factors, Fire Safety, Criticality, Radiological and the client Technical Authority. Responsible for: Input to, and creation of, the Design Substantiation Reports using appropriate templates. Checking and assessing the Design hubs substantiation documentation to select the required detail to address the Safety Functional Requirement. Provide feedback to the design teams and Project Engineering managers on any shortfalls in the substantiation. Detail and agree any further work required to fully substantiation the systems SSFRs with the relevant PEMs and PMs. Providing feedback and information to the Safety Case leads to ensure documentation and evidence is suitable Qualifications and Experience Engineering qualification related to Engineering Design Several years’ experience working in design engineering. Ideally hold a degree in relevant Engineering Discipline. Ideally Chartered or working towards Held similar position in the production, or review of, design substantiation documentation Questioning attitude, confident to challenge information where needed. Fully familiar with all aspects of safety case methodologies and legal framework relevant to nuclear safety. Good Understanding of Safety Case involvement and development for highly regulated industries. Good oral and written communication skills, including presentation and report writing.Must have British Nationality in order to obtain SC Clearance Our nuclear and defence client is looking for a Senior/Principal engineer with Design Substantiation and Safety case experience with nuclear and/or Defence experience to author Mechanical Design substantiation reports which will underpin the design of the various processes systems. The role will be responsible for reviewing and producing substantiation reports to build the required evidence to support the Safety Case They will contribute to the delivery of Work Interrogating the Engineering Schedule and evidencing claims made against Systems, Structures, and Components (SSC) in the documentation. Reviewing the updated designs inline with the Safety Case Documentation to identify any shortfalls Assess quality of substantiation evidence and identify where supplementary or supporting evidence is required Authoring nuclear substantiation documentation, including Design Substantiation Reports (DSR) providing the assurance and evidence to enable confidence in our technical solutions. Liaising with both internal and external designers and equipment vendors to gather information. Interfacing with other stakeholders such as Human Factors, Fire Safety, Criticality, Radiological and the client Technical Authority. Responsible for: Input to, and creation of, the Design Substantiation Reports using appropriate templates. Checking and assessing the Design hubs substantiation documentation to select the required detail to address the Safety Functional Requirement. Provide feedback to the design teams and Project Engineering managers on any shortfalls in the substantiation. Detail and agree any further work required to fully substantiation the systems SSFRs with the relevant PEMs and PMs. Providing feedback and information to the Safety Case leads to ensure documentation and evidence is suitable Qualifications and Experience Engineering qualification related to Engineering Design Several years’ experience working in design engineering. Ideally hold a degree in relevant Engineering Discipline. Ideally Chartered or working towards Held similar position in the production, or review of, design substantiation documentation Questioning attitude, confident to challenge information where needed. Fully familiar with all aspects of safety case methodologies and legal framework relevant to nuclear safety. Good Understanding of Safety Case involvement and development for highly regulated industries. Good oral and written communication skills, including presentation and report writing. With over 90 years' combined experience, NES Fircroft (NES) is proud to be the world's leading engineering staffing provider spanning the Oil & Gas, Power & Renewables, Chemicals, Construction & Infrastructure, Life Sciences, Mining and Manufacturing sectors worldwide. With more than 80 offices in 45 countries, we are able to provide our clients with the engineering and technical expertise they need, wherever and whenever it is needed. We offer contractors far more than a traditional recruitment service, supporting with everything from securing visas and work permits, to providing market-leading benefits packages and accommodation, ensuring they are safely and compliantly able to support our clients