Jobs at Assystem

Coordinate electrical installation activities across contracts, develop construction sequences, integrate schedules, identify and mitigate risks, support readiness reviews and work pack delivery, liaise engineering/procurement/construction teams, use Primavera P6 and Navisworks for planning, and promote nuclear safety and right-first-time delivery.

Design and produce detailed mechanical drawings (Inventor/AutoCAD), develop Alpha Gloveboxes with safety and Design for Assembly principles, manage project workload, and communicate with team members and clients in a regulated (nuclear) environment. Applicants must meet UK security clearance residency criteria or already hold at least SC.

Lead commercial management across the full contract lifecycle for nuclear new build and SMR projects. Manage contract administration, change control, compensation events and claims under NEC, develop procurement and claims-avoidance strategies, manage supplier interfaces, commercial risk/opportunity, reporting, and support dispute resolution and bid pricing.

Provide technical specialist support for nuclear ventilation systems at Sellafield: inspect assets, commission ventilation and HEPA filters, ensure compliance and reliability, investigate faults, collaborate with plant and reliability engineers, produce reports, and coach others while following safety procedures.

Design, build, and maintain full-stack web applications using React front end and Java/J2EE back end. Implement APIs and microservices, CI/CD pipelines, server configuration (cloud), containerization, debugging, and agile delivery while collaborating with cross-functional teams and supporting client deployments.

Design, build and maintain web applications using React front end and Java back end; develop APIs and microservices; implement CI/CD pipelines; configure and manage servers/cloud; troubleshoot across environments; work in Agile teams and support deployments at client sites.

Lead development and maintenance of integrated Primavera P6 schedules for complex infrastructure programmes, manage planning teams, provide critical path analysis, schedule risk and recovery planning, support change/delay analysis, coordinate works in live operational environments, and deliver executive reporting and programme governance.

Lead architectural design and review for heritage and urban development projects, ensuring alignment with master plans, conservation requirements, and regulatory codes. Coordinate multidisciplinary teams, conduct site inspections, support restoration and adaptive reuse, review contractor submissions, and support BIM coordination while preparing technical reports and resolving construction-phase issues.

Lead local rollout of the UK change roadmap for a global ERP programme: run scoping and impact assessments, activate sponsorship, build key-user networks, coordinate training, support UAT and Go-Live, measure adoption (ADKAR/ICAP), manage hypercare and transition to BAU.

Lead local deployment of the global ERP change roadmap in the UK: stakeholder mapping, impact assessments, sponsor activation, adoption measurement (ADKAR/ICAP), user network building, training and UAT coordination, go-live support, hypercare and transition to BAU over a two-year fixed-term engagement.

Deliver detailed mechanical design deliverables for glovebox equipment: produce GA, manufacturing, layout and flow drawings, and parts lists using Inventor/AutoCAD. Ensure designs follow BS8888/GD&T, design-for-assembly and nuclear safety/operating philosophies. Manage own workload, coordinate with team and client, and comply with security/residency requirements for UK clearance.

Lead local deployment of the global ERP change roadmap in the UK: scope impacts, engage sponsors, run adoption measurement (ADKAR/ICAP), build key-user networks, coordinate readiness, support go‑live and manage hypercare to transition to BAU.

Lead local deployment of the global ERP change roadmap for the UK: stakeholder mapping, impact assessments, sponsorship activation, user network management, training and readiness, go-live support, and post-go-live hypercare to secure adoption.

Lead UK deployment of the global change roadmap for an ERP programme: stakeholder mapping, impact assessments, sponsorship activation, adoption measurement (ADKAR/ICAP), training and UAT coordination, go‑live readiness, hypercare and transition to BAU.

Lead local deployment of the global change roadmap for an ERP programme in the UK: run stakeholder mapping and impact assessments, activate sponsorship, build super-user networks, coordinate training and UAT, measure adoption (ADKAR/ICAP), support go-live and manage hypercare to transition to BAU.

Lead programme performance for the Major Works Programme: review baselines and milestones, track project completion, identify and resolve programme-level issues, manage programme and EWS CP finances (forecasting, approvals, reporting), develop performance reporting procedures, and support monthly programme review meetings and the Programme Performance Manager.

Lead governance, assurance and oversight of EIMT (Examination, Inspection, Maintenance and Testing) within the Maintenance Management Organisation. Conduct independent reviews, audits and assessments, evaluate evidence, report findings, engage regulators and contractors, verify personnel competence, identify risks and drive continuous improvement of EIMT policies, systems and compliance for Defence programmes.

Support the Infrastructure Programme Manager by maintaining programme governance and controls, managing the Major Works Programme risk register, developing the next years deliverable programme, reviewing the 10-year plan, and engaging stakeholders to improve governance and align priorities.

Lead collaboration between two UK nuclear infrastructure programmes to share knowledge, data and best practices. Support implementation of the Collaboration Agreement, manage collaboration activities, KPIs, governance and reporting, capture lessons learned, drive continuous improvement and identify efficiency opportunities to deliver measurable value across both programmes.

Lead a multi-disciplinary engineering team within the Client Design Authority to produce and assess Design Change Requests and Design Concessions for nuclear infrastructure. Ensure compliance with UK nuclear regulations (ONR, SAPs, TAGs), support Nuclear Safety Cases, lead ITAs/IPRs, manage engineering change, commissioning and through-life design intent, and provide technical leadership to stakeholders and regulators.