Job Title: Principal Mechanical Engineer Location: London (Hybrid - 3 days WFH) Salary: £70k to £75k per annum Are you a driven and experienced Principal Mechanical Engineer ready to take the next step in your career? Our client, a respected building services consultancy based in central London, is looking for a talented individual to join their growing team - with the flexibility to work from home three days a week. This is a fantastic opportunity to join a close-knit, collaborative consultancy that punches above its weight on high-profile residential and hotel projects across London and beyond. With a strong pipeline of work and ambitious growth plans, they're looking for someone who is technically strong, people-focused, and eager to keep learning. What you'll be doing: * Leading the mechanical design on projects, from concept to delivery. * Mentoring junior engineers and contributing to a positive team culture. * Liaising directly with clients, architects, and project teams. What they're looking for: * Strong experience in building services mechanical design (preferably within the UK). * Exposure to residential and/or hospitality projects. * Strong CP1 Guide knowledge (essential). * A proactive communicator who enjoys working with clients and colleagues alike. * Someone who is always looking to improve - technically and professionally. * CEng or working toward chart...