Role Overview CCL Global is seeking experienced Mechanical Fitters to support a major UK Nuclear engineering programme. Working alongside Mechanical Technicians and other Fitters, you will provide hands-on mechanical assembly, maintenance and modification support across complex engineering equipment and systems. Location: Oxfordshire – Full-time onsite Contract: Until June 2027 (inside IR35) Security Clearance: BPSS Key Responsibilities * Support the maintenance, improvement and modification of mechanical components and equipment. * Assemble and prepare components in accordance with engineering drawings and technical documentation. * Carry out hands-on mechanical engineering and assembly activities to a high standard of accuracy. * Read and interpret engineering and assembly drawings. * Follow approved processes, procedures and safe systems of work. * Undertake general mechanical fitting activities with minimal supervision. * Work carefully with complex, sensitive and potentially fragile equipment. * Liaise with technicians and other engineering teams to ensure activities are completed to schedule. * Support the preparation and maintenance of documentation covering equipment installation, maintenance and testing. * Maintain appropriate quality, safety and engineering standards throughout all activities. Essential Requirements * Recognised engineering apprenticeship or equivalent, supported by a relevant engineering qualification. * Practical mechanical fitting, assembly or maintenance experience. * Ability to accurately read and interpret engineering/assembly drawings. * Good understanding of quality assurance procedures and documentation. * Experience working under Written Safe Systems of Work and/or Method Statements. * Able to complete tasks independently while working effectively within a multidisciplinary team. * Good written and verbal communication skills. * Competent with Microsoft Office, particularly Word and Excel. Desirable Experience * Experience with vacuum systems and vacuum technology. * Knowledge of mechanical cooling systems. * Previous experience working with complex scientific, industrial or high-integrity engineering equipment. Please note: This is a fully onsite position with no hybrid working available