Principal Mechanical Design Engineer Summary We are seeking a Principal Mechanical Design Engineer to lead and manage the mechanical design scope within civil infrastructure projects, with a particular focus on the water sector. The role involves delivering innovative, efficient, and compliant mechanical engineering solutions aligned with client and industry standards. You will oversee the full design lifecycle, from concept through to detailed design, ensuring integration with civil and other engineering disciplines. This position requires strong leadership to direct design teams, manage technical deliverables, and maintain quality assurance throughout project stages. Collaboration with multidisciplinary teams, including civils and mechanical specialists, is essential to deliver sustainable, buildable, and cost-effective solutions within the AMP 8 framework or similar infrastructure programmes.Skills Proven experience in mechanical design engineering within civil infrastructure projectsStrong knowledge of mechanical systems relevant to water and wastewater sectorsExperience managing multidisciplinary design teams and coordinating with civil engineering disciplinesUnderstanding of design delivery, procurement, and quality assurance processesFamiliarity with CDM (2015) regulations and health and safety complianceAbility to develop low carbon, buildable, and cost-effective design solutionsExcellent communication and stakeholder management skillsProficient in design risk manage