Senior Building Physics Engineer London Up to 63k A well-established multidisciplinary Built Environment Consultancy is looking for a Senior Building Physics Engineer to join their growing sustainability and engineering team. With offices across the UK and a broad portfolio of work in sectors including education, healthcare, commercial, and defence, this consultancy offers a dynamic environment for those passionate about building performance and sustainable design. The Role: You''ll lead the development and delivery of building performance strategies across a wide range of projects, from early concept stages through to completion. Your work will focus on evaluating and improving energy, carbon, and comfort performance, helping clients meet their environmental and operational targets. What You''ll Be Doing: Carrying out building performance modelling and simulation using tools like IES-VE or DesignBuilder Leading thermal comfort assessments, energy strategy reports, and advising on Part L compliance Supporting design teams with passive design strategies and energy-efficient solutions Working closely with clients, architects, and engineers across all design stages Mentoring junior team members and contributing to service development Keeping up to date with UK Building Regulations, sustainability frameworks, and industry trends About You: Proven experience in building physics, energy modelling, or environmental design Proficiency in building simulation tools such as I