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Senior-Principal Building Physics Engineer
Up to £60k
City of London

We are an established sustainability consultancy based in London Bridge. Since our inception in 2012, the company has grown from 2 people to 60. Our clients include developers and investment firms to deliver low-carbon buildings, upgrade MEP services, retrofit buildings and to decarbonise existing portfolios. Our Energy, Carbon & Sustainability team is made up of 15 people and with a great balance of Associates, Principals and Seniors, there is a plenty of opportunities to progress.

We are seeking a Senior-Principal Building Physics Engineer to join our team. This is a technical role that requires a deep understanding of energy modelling and building physics. The role also involves working closely with clients and colleagues to deliver high-quality projects.

Key Responsibilities:
* Lead dynamic thermal modelling and energy performance analysis using IES-VE, with expertise in Apache HVAC.
* Deliver NABERS and Design for Performance (DfP) modelling, supporting Net Zero and energy efficiency strategies.
* Conduct Part L, TM52, TM54, and TM59 assessments, as well as overheating analysis, daylight studies, and thermal comfort assessments.
* Provide technical leadership in building physics and energy modelling, ensuring best practices across projects.
* Support other areas of sustainability, including Whole Life Carbon (WLC) and Embodied Carbon, working closely with specialists.
* Mentor and support junior engineers, fostering technical development within the team.
* Engage with clients, architects, and multidisciplinary teams to integrate low-carbon, sustainable design strategies into projects.
* Stay ahead of industry regulations, net zero carbon strategies, and evolving modelling methodologies.

About You:
* 6+ years experience in Building Physics, Energy Modelling, or Sustainability Consulting.
* Expertise in IES-VE, Apache HVAC, NABERS, and Design for Performance (DfP) modelling.
* Strong knowledge of Part L compliance, TM52, TM54, TM59, and SAP/SBEM assessments.
* Chartered Engineer or working towards CIBSE/IEMA accreditation is highly desirable.
* Experience leading projects, mentoring junior engineers, and engaging with key stakeholders.
* Passion for low-carbon, high-performance building design and Net Zero Carbon strategies.

Why Join?
* Work on cutting-edge projects across commercial, residential, and data centre sectors.
* Join a forward-thinking, innovative team committed to sustainability and energy efficiency.
* Strong opportunities for career progression, leadership, and professional development.
* A collaborative environment that values expertise, learning, and technical excellence.

Whether you're working in the larger corporate companies or a small SME this is certainly one to take note of. Please don't hesitate to apply or get in touch for further info on the email below, we can arrange a confidential conversation anytime to suit you.

Your expert recruitment consultant is Lakshman Sivanesan, call today on 0207 422 7463 or email [email protected] Eden Brown is committed to equality in the workplace and is an equal opportunity employer.

Eden Brown is committed to equality in the workplace and is an equal opportunity employer.

Senior / Principal Building Physics Engineer
Location: London (Hybrid)
Salary: Up to £65k

Are you passionate about delivering low-energy, high-performance buildings? A leading global architectural, engineering, and construction consultancy is seeking a Senior or Principal Building Physics Engineer to join its London team, supporting projects across Europe, the USA, and Asia.

You'll play a pivotal role in the development and delivery of thermal and energy modelling strategies for commercial interiors and complex buildings. With a strong background in building physics, energy modelling, and sustainable design, you'll collaborate with architects, engineers, and sustainability consultants to develop data-driven design solutions that support Net Zero ambitions and industry-leading performance.

What you'll be doing:
* Deliver advanced energy and thermal simulations using IES-VE, EnergyPlus, or DesignBuilder
* Apply UK and international standards including Part L, TM54, TM52, TM59, ASHRAE 90.1, and LEED/BREEAM guidelines
* Lead operational energy modelling, overheating analysis, thermal comfort, and passive design assessments
* Conduct feasibility studies, Life Cycle Assessments (LCA), and renewable energy simulations
* Support carbon footprinting and Net Zero carbon strategies
* Mentor junior engineers and contribute to knowledge-sharing across the team
* Present energy strategies and modelling outcomes clearly to both technical and non-technical stakeholders

About You:
* 8+ years' experience in energy modelling, building physics, and thermal analysis
* Expertise with tools such as IES-VE, DesignBuilder, Rhino + Grasshopper (Ladybug/Honeybee) CFD experience is a bonus
* Strong understanding of passive design, building envelope optimisation, and operational performance
* Confident communicator with experience leading project workstreams and mentoring junior team members
* Professional certifications such as LEED AP, WELL AP, CIBSE LCC or working towards Chartership are highly desirable

Why Join?
* Work on global, high-impact projects that prioritise health, performance, and sustainability
* Be part of a collaborative and multidisciplinary team of experts
* Enjoy hybrid working and support for your career development
* Engage with innovative solutions through cutting-edge Living Labs initiative

Whether you're working in the larger corporate companies or a small SME this is certainly one to take note of. Please don't hesitate to apply or get in touch for further info on the email below, we can arrange a confidential conversation anytime to suit you.

Your expert recruitment consultant is Lakshman Sivanesan, call today on 0207 422 7463 or email [email protected] Eden Brown is committed to equality in the workplace and is an equal opportunity employer.

Eden Brown is committed to equality in the workplace and is an equal opportunity employer.