Senior-Principal Passivhaus Consultant London Up to £68k Join one of the UK's leading multidisciplinary consultancies and play a key role in delivering the next generation of ultra-low energy buildings. This is an exciting opportunity for a Senior or Principal Passivhaus Consultant to help grow and lead a specialist service within a national consultancy known for its technical excellence, collaborative culture, and strong sustainability credentials. The Opportunity: You'll be a subject matter expert in Passivhaus and EnerPHit methodologies, responsible for leading design advice and certification strategies on both residential and non-residential projects. This role offers a high degree of autonomy and the chance to shape how Passivhaus principles are integrated into major UK developments. What You'll Be Doing: * Leading the delivery of Passivhaus and EnerPHit projects from concept to certification * Advising clients, architects, and design teams on fabric-first, low-energy design strategies * Coordinating PHPP modelling, thermal bridging, airtightness, and MVHR design inputs * Managing and reviewing submissions for Passivhaus certification * Supporting the wider sustainability team on Net Zero Carbon and Whole Life Carbon strategies * Representing the business at design team meetings and industry events * Mentoring junior team members and contributing to thought leadership About You: ...