Building Physics Engineer

Our Client is an innovative building services consultancy delivering high-performance mechanical, electrical and public health (MEP) design solutions. With a strong focus on building performance, energy efficiency and low-carbon outcomes, the business works collaboratively with design teams to create comfortable, compliant and future-ready buildings. Role Overview The Sustainability Division is seeking a skilled Building Physics Consultant to support the analysis and optimisation of building performance across a range of projects. The role will focus on thermal comfort, energy use, overheating risk and regulatory compliance, working closely with MEP engineers, sustainability consultants and external design teams. This role is ideal for someone with a strong technical background in building modelling who is passionate about improving real-world building performance. Key Responsibilities * Deliver building performance modelling and analysis across all project stages * Undertake dynamic thermal modelling (TM54, TM59, TM52) * Carry out overheating risk assessments and thermal comfort analysis * Support compliance with UK Building Regulations (Part L and Part O) * Produce SAP and SBEM calculations where required * Assess energy demand, operational energy and passive design strategies * Provide input into façade, glazing, shading and fabric performance * Support sustainability and net zero carbon strategies * Collaborate closely with MEP engineers to optimise building systems * Prepare clear technical reports and client-facing documentation * Engage with architects, clients and wider design teams * Stay up to date with building physics standards, guidance and legislation Desirable Skills & Experience * Degree in Building Physics, Engineering, Architecture, or a related discipline * Experience in a building physics or building performance role * Proficiency in dynamic simulation tools (e.g. IES-VE, TAS, DesignBuilder) * Solid understanding of thermal comfort, energy use and overheating analysis * Knowledge of UK building regulations and relevant guidance * Strong analytical, problem-solving and report-writing skills * Ability to manage workloads across multiple projects * Confident communicator with technical and non-technical stakeholders Desirable Skills & Qualifications * Experience producing TM54 operational energy assessments * Knowledge of Part O compliance and overheating mitigation strategies * Experience with Passivhaus, BREEAM or similar standards * Familiarity with embodied carbon or whole-life carbon concepts * Experience working within an MEP or multidisciplinary consultancy * Working towards or holding professional accreditation (CIBSE, IEMA, etc.)