{"id":3817141,"url":"https://alion.io/job/sizewell-c-pre-commissioning-workpack-engineer","title":"Pre-Commissioning WorkPack Engineer","company":{"id":1777214,"name":"Sizewell C","domain":"sizewellc.com","url":"https://alion.io/company/sizewellc","size_band":"1001-5000","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"SuccessFactors","truth_index":{"grade":"A","score":100,"open_postings":6,"ghost_share":0,"stale_share":0.167,"repost_share":0,"time_to_fill_p50_days":19,"computed_at":"2026-11-08T05:47:12Z"}},"role":"Industrial Engineering","role_family":"Industrial Engineering","seniority":null,"employment_type":null,"work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Bridgwater, United Kingdom"],"countries":["GB"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":null,"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"HPC","optional":false}],"status":"live","first_seen_at":"2026-11-05T16:29:47Z","employer_posted_date":"2026-11-05","last_verified_at":"2026-11-08T21:18:11Z","board_verified":true,"closed_at":null,"days_open":3,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":3},"description":"The HPC Jobs Service supports local people into exciting, long-term careers across our Project.\nPre-Commissioning WorkPack Engineer\nBilfinger UK\nHinkley Point C\nMain Duties:\nPrepare detailed pre-commissioning work packs, including scope, drawings, test procedures, and safety documentation.\nCoordinate with engineering, construction, and commissioning teams to define system boundaries, test requirements, and completion criteria.\nEnsure all pre-commissioning activities comply with project specifications, quality standards, and regulatory requirements.\nReview and interpret P&IDs, system flow diagrams, isometrics, and equipment datasheets.\nSupport the planning and sequencing of pre-commissioning activities to align with project schedules and system handover milestones.\nTrack progress of pre-commissioning deliverables and maintain accurate records within completion systems (e.g., CMS, ITPs, check-sheets).\nParticipate in field walkdowns, punch-listing, and readiness reviews.\nLiaise with the client, commissioning teams, and other contractors to resolve technical or system boundary issues.\nEnsure documentation is complete and accurate for system turnover packages.\nDevelop Bill of Materials (BOM) and coordinating with design and procurement teams to ensure tools, consumables, and parts are available before work starts.\nDefine requirements for temporary equipment needed to conduct pressure test.\nIntegrating Risk Assessments and Method Statements (RAMS) and ensuring all tasks meet technical, safety, and regulatory standards.\nSupport Installation and Commissioning teams.\nRequirements:\nHNC/HND or degree in Mechanical, Process, or Piping Engineering.\nFamiliarity with leak testing, hydrostatic testing, nitrogen/helium testing, or mechanical completion workflows.\nExperience working in a pre commissioning, commissioning, or system completion role on large industrial, energy, or infrastructure projects.\nStrong understanding of mechanical, piping, or process engineering principles.\nAbility to read and interpret P&IDs, isometrics, system boundaries, and engineering drawings.\nExperience preparing or managing work packs (construction, pre commissioning, or commissioning).\nKnowledge of system handover processes, ITPs, test procedures, and quality documentation.\nGood understanding of industry standards and safe working practices.\nProficiency with completion management systems (e.g., CMS, MCPlus, GoCompletions, or similar).\nCCNSG\nExperience/Qualifications - Desirable\nExperience working on nuclear, oil & gas, power generation, or major infrastructure projects.\nPrior experience working at Hinkley Point C or within a highly regulated environment.\nKnowledge of hydrostatic testing, flushing, cleaning, leak testing, or mechanical completion processes.\nUnderstanding of commissioning workflows, LOTO procedures, and system energisation requirements.\nExperience with digital work pack systems or structured handover platforms.\nKnowledge of AVEVA 3D software suite, Blueabeam, MS Visio\nExperience working in multicultural environment\nTraining or certification in joint integrity/bolting (e.g., ECITB MJI10/18/19, Bolt Tightening, or similar).\nFor this role you must have evidence of right to work in the UK. As a project, we do not discriminate on the grounds of age, gender, race, colour, religion, disability or sexual orientation, and we welcome applications from all sections of the community.\nThe HPC Jobs Service supports local people into exciting, long-term careers across our Project.\nPre-Commissioning WorkPack Engineer\nBilfinger UK\nHinkley Point C\nMain Duties:\nPrepare detailed pre-commissioning work packs, including scope, drawings, test procedures, and safety documentation.\nCoordinate with engineering, construction, and commissioning teams to define system boundaries, test requirements, and completion criteria.\nEnsure all pre-commissioning activities comply with project specifications, quality standards, and regulatory requirements.\nReview and interpret P&IDs, system flow diagrams, isometrics, and equipment datasheets.\nSupport the planning and sequencing of pre-commissioning activities to align with project schedules and system handover milestones.\nTrack progress of pre-commissioning deliverables and maintain accurate records within completion systems (e.g., CMS, ITPs, check-sheets).\nParticipate in field walkdowns, punch-listing, and readiness reviews.\nLiaise with the client, commissioning teams, and other contractors to resolve technical or system boundary issues.\nEnsure documentation is complete and accurate for system turnover packages.\nDevelop Bill of Materials (BOM) and coordinating with design and procurement teams to ensure tools, consumables, and parts are available before work starts.\nDefine requirements for temporary equipment needed to conduct pressure test.\nIntegrating Risk Assessments and Method Statements (RAMS) and ensuring all tasks meet technical, safety, and regulatory standards.\nSupport Installation and Commissioning teams.\nRequirements:\nHNC/HND or degree in Mechanical, Process, or Piping Engineering.\nFamiliarity with leak testing, hydrostatic testing, nitrogen/helium testing, or mechanical completion workflows.\nExperience working in a pre commissioning, commissioning, or system completion role on large industrial, energy, or infrastructure projects.\nStrong understanding of mechanical, piping, or process engineering principles.\nAbility to read and interpret P&IDs, isometrics, system boundaries, and engineering drawings.\nExperience preparing or managing work packs (construction, pre commissioning, or commissioning).\nKnowledge of system handover processes, ITPs, test procedures, and quality documentation.\nGood understanding of industry standards and safe working practices.\nProficiency with completion management systems (e.g., CMS, MCPlus, GoCompletions, or similar).\nCCNSG\nExperience/Qualifications - Desirable\nExperience working on nuclear, oil & gas, power generation, or major infrastructure projects.\nPrior experience working at Hinkley Point C or within a highly regulated environment.\nKnowledge of hydrostatic testing, flushing, cleaning, leak testing, or mechanical completion processes.\nUnderstanding of commissioning workflows, LOTO procedures, and system energisation requirements.\nExperience with digital work pack systems or structured handover platforms.\nKnowledge of AVEVA 3D software suite, Blueabeam, MS Visio\nExperience working in multicultural environment\nTraining or certification in joint integrity/bolting (e.g., ECITB MJI10/18/19, Bolt Tightening, or similar).\nFor this role you must have evidence of right to work in the UK. 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