Senior Mechanical Engineer - Rail and Infrastructure (HS2)Shape the Future of UK InfrastructureAre you an experienced Mechanical Design Engineer ready to leave a lasting legacy on the UK''s largest infrastructure project?We are seeking a Senior Mechanical Engineer to join our world-class Rail and Infrastructure Engineering team. In this pivotal role, you will lead the technical delivery, coordination, and assurance of complex mechanical systems for the landmark HS2 programme. Working within a dynamic, multidisciplinary MEICA environment, you will take innovative engineering solutions from initial concept all the way through to testing, commissioning, and handover.If you thrive on solving complex engineering interfaces, managing high-profile stakeholders, and mentoring the next generation of engineering talent, this is your opportunity to elevate your career.Key ResponsibilitiesTechnical Design Leadership: Lead the development and review of complex mechanical engineering solutions, including HVAC, tunnel ventilation, pumping stations, drainage, and fire suppression systems.Engineering Assurance and Compliance: Take ownership of mechanical calculations (hydraulic, ventilation, pressure loss) and ensure all designs rigorously comply with HS2 Technical Standards, Building Regulations, CIBSE Guidelines, and CDM Regulations (2015).Multidisciplinary Integration: Lead Inter-Disciplinary Coordination and Reviews (IDC/IDR), collaborating closely with electrical, civil, structural, arch