{"id":2976684,"url":"https://alion.io/job/assystem-mechanical-responsible-engineer-5","title":"Mechanical Responsible Engineer","company":{"id":5278,"name":"Assystem","domain":"assystem.com","url":"https://alion.io/company/assystem","size_band":"5000+","is_staffing_agency":false,"employer_type":"services","is_intermediary":false,"listed_via":null,"ats_vendor":"SmartRecruiters","truth_index":{"grade":"B","score":75,"open_postings":211,"ghost_share":0,"stale_share":1,"repost_share":0,"time_to_fill_p50_days":28,"computed_at":"2026-10-23T05:54:15Z"}},"role":"Industrial Engineering","role_family":"Industrial Engineering","seniority":null,"employment_type":"full_time","work_mode":"hybrid","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Warrington, United Kingdom"],"countries":["GB"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":{"min_usd":35000,"max_usd":73000,"period":"year","method":"role_country_seniority_unknown","sample_n":820},"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[],"status":"live","first_seen_at":"2026-10-20T11:34:27Z","employer_posted_date":"2026-10-20","last_verified_at":"2026-10-24T00:35:30Z","board_verified":true,"closed_at":null,"days_open":3,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":3},"description":"Today, Assystem is among the top three independent nuclear engineering firms worldwide. With over 60 years of experience in highly regulated sectors, the group supports public and industrial stakeholders in the execution of complex and strategic infrastructure projects, subject to high safety and security requirements.\nAssystem mobilizes 8,000 experts in 13 countries and intervenes across the entire project lifecycle, in engineering, project management and digital solutions.\n Mechanical Responsible Engineer\nWarrington\nPerm or Contract (Inside IR35)\nMechanical Responsible Engineer (RE)\nThe RE holds full technical accountability for mechanical & ventilation engineering within their area, ensuring all work is safe, compliant, and fit for purpose across the project lifecycle .\nWorking to R2A2 (ED21), you’ll provide technical leadership, governance, and assurance, while retaining responsibility for key engineering decisions-even when delegated .\nKey Responsibilities & Experience:\nStrong mechanical engineering background in regulated, safety-critical environments \nProven technical accountability & decision-making experience \nEnsure compliance with legislation, standards, and safety requirements \nEstablish governance, assurance & verification processes \nLead multi-disciplinary teams & resolve complex technical issues \nManage technical risks effectively \nInterface with project teams, regulators & assurance bodies \nPromote a strong safety, quality & compliance culture \n Essential Qualifications\nDegree (or equivalent) in Mechanical Engineering or related discipline \nExtensive experience aligned to a Responsible Engineer role \nChartered Engineer (or equivalent) with a recognised institution \nAble to meet security clearance & site access requirements \nKey Experience\nExperience as a Responsible Engineer or technical authority in nuclear/high-hazard environments \nSafety case development, substantiation & regulatory engagement \nFull lifecycle delivery: concept → commissioning & handover \nManaging deviations, concessions & non-conformances \nStrong understanding of governance, assurance & gated processes \nContribution to strategic decision-making & continuous improvement \nSpecialist Knowledge ⭐\nSQEP in high-integrity piping design (incl. seismic & safety case) \nMachinery Directive & machinery design expertise \nUKCA marking for new facilities \nFamiliarity with SEMs, Design Capability CoE & organisational structures \nSQEP aligned with SR0699 & ED21 standards \n Whilst we encourage applications from all nationalities, Assystem within the UK are subject to security and export control restrictions due to the nature of work to be undertaken.\nThese restrictions mean that factors including your nationality, any previous nationalities you have held, and/or your place of birth may limit those roles that you can perform for the organisation.\nNOTICE TO CANDIDATES ON RECRUITMENT FRAUD - We are committed to safeguarding candidates from fraudulent activity associated with our recruitment process. Please note that we will never offer specialist CV writing services, request payment or ask for sensitive personal information during the recruitment process.\nWe are committed to equal treatment of candidates and promote, as well as foster all forms of diversity within our company. We believe that bringing together people with different backgrounds and perspectives is essential for creating innovative and impactful solutions. Skills, talent, and our people’s ability to dare are the only things that matter !. 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