Mechanical Engineer, Rotating Equipment Contract, 16 weeks Outside IR35 West London November 2025 Addison Project Plc are seeking a contractor to provide Mechanical Engineering services to support the mechanical engineering design phase of a sustainable energy project. The scopes requires you to provide design office technical expertise to ensuring compliance with client specifications and UK legislation. Services to be provided * Deliver mechanical engineering design support for rotating equipment systems. * Perform calculations and ensure all designs meet regulatory and client requirements. * Collaborate with multidisciplinary teams to ensure seamless project execution. * As the Owner’s Engineer, represent the client’s technical interests throughout the project lifecycle ensuring technical compliance, quality assurance, and alignment with project objectives * Provide expert input during troubleshooting, failure analysis, and performance optimisation of rotating equipment * Oversee design office deliverables to ensure alignment with project requirements and industry standards * Review and approve vendor documentation, including datasheets, drawings, and specifications. Experience Required * Minimum HNC in Mechanical Engineering gained in a UK establishment * Chartered Engineer status or working towards * Demonstrable UK onshore refinery / petrochemical / chemical experience as a rotating equipment mechanical design engineer. * Strong understanding of rotating machinery such as pumps, compressors, turbines, and motors. * Proficiency in design tools and standards relevant to mechanical systems. * Ability to interpret technical drawings, schematics, and specifications. * Familiarity with sustainable energy or UK onshore process industry projects. * Excellent communication and stakeholder engagement skills If you have the skills and experience and would like to be considered for the role, please apply now. To all applicants: In line with legislation, this position is only open to candidates who have indefinite eligibility to work in the UK. To all recruitment agencies: The Company does not accept unsolicited agency resumes. Recruitment agencies should not send resumes to any of our employees. We are not responsible for any fees related to unsolicited resumes from recruitment agencies. Please note: If you have not been contacted within 2 weeks of your application, then you have not been selected for this position at this time. We wish you much success in the future and thank you for your interest