This website emits an average of 1.6 g of CO₂ per page,* ASY 43,65 EURSenior Mechanical EngineerOur Vacancy# Senior Mechanical Engineer* Nuclear* Permanent /* Whitehaven* United Kingdom* 12/02/26* On site* Share##Assystem is an international company with one mission: accelerate the energy transition around the world. Every day, our 8,000 switchers located in 12 countries (Europe, Middle East, Pacific Asia & Africa) connect their six thousand billion neurons to tackle the task of the century: switching to low-carbon energy. We are a collective committed to the actors who are making the energy switch. Sharing our knowledge, expertise and values allows us to innovate and think differently about the energy transition. Drawing on more than 55 years’ experience in highly regulated sectors subject to strict security and safety requirements, we provide our customers with engineering and project management services, as well as digital services and solutions to optimize the performance of complex infrastructure projects throughout their life cycle. The Group is currently ranked second in the world for nuclear engineering. To ensure a viable, efficient, and reliable energy future for all.## Job DescriptionSenior Mechanical Engineer**Location:** Whitehaven **Type:** Staff / Contract (Inside IR35)Role Description The **Mechanical Senior Engineer** is required to deliver the mechanical work scope, including production and checking, reporting to a Principal Engineer. They will need to deliver detailed design work packs and supervise designers in the production of layout and detailed design drawings. The project is in the latter stages of preliminary design with mock-up parts, with certain assemblies in final manufacturing and testing. The Mechanical Senior Engineer will be required to support the design through all project phases, testing, and execution of the parts required in this current phase. They will work closely with the multi-discipline design team and plant-based team. The role includes guiding Mechanical Designers and Engineers in the production of detail drawings, sub-assemblies, GA, layout drawings, flow diagrams, and parts lists. May be required to produce calculations to verify detailed design and design substantiation. The production and compilation of technical files for machinery/UK CA compliance (e.g., RA’s, O&M manuals, etc.) will also be a requirement.## My profileEssential Experience & Qualifications Experience of working within a highly regulated industry, preferably within the nuclear industry. Familiarity with ‘Design for Assembly’ within a nuclear facility. Ability to manage own workload and drive the completion of the work scope. Strong understanding of delivering mechanical designs in the nuclear sector. Experience in producing technical files (UK CA and machinery directive compliance). Knowledge of machining and fabrication manufacturing processes. Experience in producing and checking mechanical engineering calculations and deliverables. Skilled in liaising with key stakeholders and other design disciplines. Competent report writing skills for clear and concise findings. Comfortable working under time and cost constraints. Excellent communication skills with team members and the Client.**Security clearance:**Due to the nature of work to be undertaken applicants will be required to meet certain residency criteria in order to attain a minimum level of UK security clearance if not already security cleared to a minimum SC level.We 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 !. Bring your unique contributions and help us shape the future.# Other vacancies might interest you* ## Permanent Whitehaven 12/02/26* ## Permanent Whitehaven 07/02/26* ## Permanent Whitehaven 07/02/26 #J-18808-Ljbffr