Principal Mechanical Engineer Building Services Location: South Croydon or London Bridge Working Pattern: Hybrid (3 days in office, 2 from home) Are you a hands-on Principal Mechanical Engineer ready to lead complex, high-value building services projects while mentoring a talented team This opportunity sits within a long-established building services consultancy with more than 30 years experience delivering MEP projects across the UK. About the Organisation This respected engineering practice specialises in healthcare, commercial, leisure, high-end residential, industrial, defence and education sectors. What sets them apart: A deep engineering heritage, successfully delivering building services engineering projects for over 25 years. A strong sustainability ethos with expertise in low-carbon design, renewable technologies, and modern environmental engineering. A stable team with decades of combined experience, working with well-known national and international clients. Operating primarily across London and the South, backed by strong client relationships and repeat business. With a strong delivery-focused culture, this is the ideal setting for a senior mechanical engineer who wants influence, responsibility, and meaningful impact. The Role As a Principal Mechanical Engineer, you will take full technical and leadership ownership of multiple building services projects across varied sectors. Responsibilities include: Leading mechanical engineering design across heal