Our client, a leading consultancy specialising in aviation infrastructure, is seeking an experienced Senior Project Engineer / Design Manager to join a major, long-term programme at a major UK Airport. This is a high-profile opportunity for a design professional with strong airfields expertise-particularly in runway and pavement design-to make a significant impact within a complex and safety-critical aviation environment. The role offers a hybrid working option and is within IR35 guidelines, providing long-term contract stability in a dynamic setting.Key Responsibilities:Lead and manage design development for airfield infrastructure including runways, taxiways, aprons, and associated civil works.Oversee design assurance, compliance, and technical quality throughout all project stages.Coordinate multidisciplinary engineering inputs, ensuring integration with operational airport requirements.Manage interfaces between design teams, contractors, and airport stakeholders to deliver high-quality outcomes.Provide technical leadership, problem-solving, and risk management related to design solutions.Support project planning, reporting, and ensure delivery aligns with programme milestones.Required Experience:Significant experience as a Design Manager or Senior Project Engineer within aviation, airfields, or major civil engineering sectors.Strong background in runway and pavement design, airfield civil works, or pavement engineering.Experience working in complex, safety-critical, or re