Job Search

Principal - Associate Building Physics Engineer
London
Up to £85k

A leading building services consultancy is seeking an ambitious and technically excellent Principal - Associate Building Physics Engineer to join their London office. This is a rare and exciting opportunity to build a team from the ground up, act as the face of sustainability and building performance, and work towards leading your own P&L function in the near future.

With a strong pipeline of technically complex, low-energy projects across commercial, residential, education, and healthcare sectors, this role puts you in a strategic position to shape how building performance is delivered across the UK and Europe.

The Role
You'll lead the building physics and performance modelling services, guiding clients and design teams toward high-performance, low-carbon outcomes. From early-stage passive design advice to detailed compliance modelling, you'll drive the technical delivery while growing and mentoring a new team around you.

Key responsibilities include:
* Delivering and reviewing dynamic thermal modelling, energy compliance, and overheating assessments (TM54, TM59, TM52, Part L & O)
* Leading the use of tools such as IES-VE, ApacheSim, and Apache HVAC to assess building performance
* Supporting Net Zero strategies, carbon assessments, and wider sustainability inputs as needed
* Acting as the key client contact, leading presentations, advising design teams, and championing performance-led design
* Growing a new team of engineers under your leadership, with support from the wider practice
* Contributing to business development and eventually taking ownership of your own P&L responsibility

About You
* Degree-qualified with 7+ years' experience in building physics or sustainable design
* Proficient in IES-VE (including Apache HVAC) and familiar with compliance tools and frameworks
* Experienced in leading projects and managing client relationships
* Strong communicator, confident advising stakeholders and representing the practice externally
* Passionate about shaping the future of Net Zero design and performance-driven buildings
* Ready to step into a strategic leadership role and grow a specialist team

Why Apply?
* Define and grow your own building physics & sustainability offering
* Work toward owning and managing your own P&L and team structure
* Lead the delivery of high-impact projects with technical depth and real-world value
* Join a flexible, supportive consultancy that empowers individuals to take ownership
* Enjoy hybrid working, chartership support, bonus scheme, CPD, and a collaborative culture

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 (DfP / NABERS / Apache HVAC)
London
Up to £68k

Are you a building performance expert ready to lead on some of the UK's most exciting low-energy projects? One of the UK's top multidisciplinary consultancies is looking for a Senior-Principal Building Physics Engineer to lead the delivery of Design for Performance (DfP) and NABERS UK modelling, with strong experience using Apache HVAC within IES-VE.

This is a rare opportunity to take a technical leadership role within a nationally recognised team delivering Net Zero strategies and operational energy modelling at the highest level.

The Role
* Lead on DfP and NABERS UK performance modelling across a wide portfolio of commercial and mixed-use developments
* Deliver detailed simulations using Apache HVAC in IES-VE to support operational energy assessments
* Coordinate with internal design teams, external consultants, and architects to influence design from early stage
* Develop and manage robust energy strategies that align with Net Zero Carbon and ESG frameworks
* Support certification processes and engagement with Independent Design Review (IDR) panels
* Mentor junior team members and contribute to service innovation and thought leadership

About You
* Strong experience with IES-VE, specifically Apache HVAC for operational energy modelling
* Proven experience delivering NABERS UK and DfP models to industry benchmarks
* In-depth knowledge of UK Building Regulations, Part L, TM54, and energy compliance pathways
* Excellent communicator, confident engaging with design teams, developers, and certifiers
* Experience leading projects and supporting business development is a plus
* Passionate about driving down operational energy use and promoting performance-led design

Why Join?
* Play a lead role in advancing operational energy modelling at a national level
* Work in a flexible, hybrid environment with offices across the UK
* Join a growing sustainability team with a strong pipeline of commercial and complex projects
* Benefit from structured progression, training support, and a highly collaborative culture

Interested in shaping how buildings perform, not just how they look? Get in touch or apply today.

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 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:
* Certified Passivhaus Designer or Consultant, with several projects delivered to certification
* Strong working knowledge of PHPP, thermal bridge analysis (e.g., THERM), and airtightness detailing
* Experience engaging with architects and clients to influence low-energy design
* Ability to lead projects independently and contribute to business development
* Excellent communication skills and a genuine passion for sustainable, high-performance buildings

Why Join?
* Be part of a fast-growing sustainability team within an established, multidisciplinary consultancy
* Work on a wide range of high-profile, impactful projects across the UK
* Enjoy flexible working, excellent progression opportunities, and support for further qualifications
* Help shape the future of Passivhaus delivery within a collaborative, people-first business

Ready to lead the charge on Passivhaus design? Apply now or get in touch to learn more.

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 - International Projects
London, UK
Up to £65k

Join a leading global planning and engineering consultancy with a strong presence in the UK and the Middle East. Our London office is seeking a dynamic and experienced Senior / Principal Building Physics Engineer to contribute to innovative building services projects across diverse sectors.

About Us:
With over 20 years of experience in the UK and a global team of 6,000+ professionals, we deliver integrated engineering solutions across civil, structural, building services, façade, and related disciplines. Our London office, located in the heart of the city, fosters a collaborative and supportive work environment, emphasising both professional excellence and employee well-being.

Role Overview:
As a Senior / Principal Building Physics Engineer, you will be involved in all design stages of projects, from early-stage concept development to detailed design and construction. Your role will involve close collaboration with clients, architects, and multidisciplinary teams to deliver sustainable and high-performance building solutions.

Key Responsibilities:
* Lead building physics analyses, including energy modeling, thermal comfort assessments, and daylight simulations.
* Engage directly with clients, providing expert advice and building strong relationships.
* Participate in design team meetings, confidently presenting and challenging design concepts to ensure optimal outcomes.
* Collaborate with architects and engineers to integrate sustainable design strategies into projects.
* Mentor junior team members, fostering a culture of continuous learning and development.

Qualifications:
* Proven experience in building physics engineering, with a strong portfolio of completed projects.
* Proficiency in relevant simulation tools (e.g., IES-VE).
* Excellent communication skills, with the ability to articulate complex concepts to diverse audiences.
* A proactive approach to problem-solving and a commitment to sustainable design principles.

Why Join Us:
* Be part of a globally recognised consultancy with a diverse project portfolio in the UK and the Middle East.
* Work in a modern, centrally located London office designed to promote collaboration and well-being.
* Engage in a culture that values innovation, professional growth, and community involvement.
* Enjoy a supportive environment that encourages work-life balance and continuous development.

If you're ready to take your career to the next level and make a meaningful impact on sustainable building design, we invite you to apply.

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.

Building Physics Engineer - M&E Contractor
 Up to £45k
 London, UK

Are you passionate about sustainable building design and energy efficiency? A leading M&E Design & Build Contractor is looking for a Building Physics Engineer to join their growing team. This is a fantastic opportunity to work on high-profile projects across commercial, residential, data centres, retail, and pharmaceutical sectors, contributing to the development of energy-efficient, low-carbon buildings. 

Key Responsibilities: 
* Conduct dynamic thermal modelling and energy performance analysis using IES-VE or similar tools. 
* Perform Part L, TM52, TM54, and TM59 assessments to ensure compliance with building regulations. 
* Lead overheating analysis, daylight studies, and thermal comfort assessments. 
* Provide technical input on Whole Life Carbon (WLC) and Embodied Carbon assessments. 
* Work closely with MEP engineers, architects, and sustainability consultants to integrate energy-efficient strategies into designs. 
* Support BREEAM, LEED, WELL, and NABERS assessments where required. 
* Stay updated on building regulations, net zero carbon strategies, and industry best practices. 

About You: 
* Degree in Building Physics, Mechanical Engineering, Sustainability, or related field. 
* 2+ years experience in a Building Physics or Energy Modelling role. 
* Proficiency in IES-VE, TAS, DesignBuilder, or similar simulation tools. 
* Strong knowledge of Part L, TM52, TM54, TM59, and SAP/SBEM assessments. 
* Passion for low-carbon, high-performance building design. 
* Excellent communication skills and ability to work in a multidisciplinary team. 

Why Join? 
* Work on landmark projects across multiple sectors, including data centres and commercial developments. 
* Be part of a forward-thinking, innovative team driving sustainable solutions. 
* Strong opportunities for career progression and professional development. 
* A company culture that values collaboration, learning, and innovation. 

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.