Our client, a large international oil and gas energy company, is seeking a Senior Facilities Engineer to join their team, based in their office in London, UK. This is an ongoing contract role (PAYE) and initial duration is to Spring 2027. This role plays a key part in supporting the company’s strategic growth targets and provides a fantastic opportunity to gain broad experience across a range of assets, regions, and energy sectors, including oil & gas and renewables. It also provides valuable exposure to the commercial dimensions of mergers, acquisitions (M&A), and new ventures (NV). RESPONSIBILITIES Evaluate facility designs, development schedules in accordance to CIMS and Stage Gate Process. Provide engineering expertise in the design, development, and optimization of oil and gas production facilities. Deliver facility parameters used in the cost estimations; Deliver facilities cost estimates and schedules. Identify key risks, mitigations and opportunities in projects, ensure compliance with industry regulations, safety standards, and environmental policies in facility design and operations. Present evaluations and recommendations to Company's Expert Review Team & Senior Management. Ensure familiarity with new technologies and best practices related to current M&A / NV projects for Oil & Gas as well as Renewables; As part of the M&A due diligence process, review / comment on the proposed scope, schedule and cost associated with the project. Assist in building CIMS processes, workflows and standards for facility evaluations. Provide mentorship and technical guidance to junior engineers. REQUIREMENTS A Bachelor’s degree (or above) in related discipline. Professional membership with a recognised professional body. Strong experience and understanding of Oil & Gas Facility Engineering. Expertise in the use of appropriate software and analytical tools. Excellent knowledge of industry regulations, safety standards, and environmental compliance requirements. Expertise in process simulation software and equipment sizing. Experience in Oil & Gas facility engineering evaluation on upstream assets. Strong experience with M&A and NV evaluations is key, with a strong track record of managing projects independently. General knowledge of the offshore engineering, fabrication and construction industry. Strong analytical skill and effectively communicate technical data. Commercial awareness.