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Principal - Associate Building Physics Engineer
Up to £75k
London

A leading multidisciplinary design practice is looking for a talented and experienced Principal - Associate Building Physics Engineer to take a technical leadership role within their London sustainability and environmental design team.

This is a fantastic opportunity to shape the performance and sustainability strategy of diverse, design-led projects-while working closely with architects, clients, and other engineering disciplines to influence outcomes from concept through to delivery.

The Role
As the technical lead for building physics, you will:
* Deliver and oversee dynamic thermal modelling, overheating analysis, and energy compliance assessments
* Advise design teams and clients on passive design strategies, operational energy, and performance-led design
* Guide the integration of building physics into early concept work, detailed design, and construction stages
* Manage project deliverables and act as a mentor and team lead for junior engineers
* Add value by spotting opportunities to improve building performance, reduce energy use, and support sustainable outcomes
* Represent the practice externally in meetings, workshops, and industry forums
While the primary focus of the role is building physics, knowledge or interest in broader sustainability areas (e.g., Whole Life Carbon, certification, Net Zero strategy) would be welcomed.

About You
* Strong technical expertise in building performance analysis, ideally using IES-VE or similar tools
* Proven experience working on complex, multidisciplinary design projects
* Confident communicator, comfortable engaging directly with clients, architects, and design teams
* Leadership skills with the ability to mentor and guide other engineers
* Collaborative, solutions-focused, and passionate about driving sustainable outcomes
* Previous experience at Principal or Associate level (or ready to step up into that role)

Why Join?
* Influence award-winning, high-profile projects with a leading design consultancy
* Take ownership as the technical lead in building physics and shape project strategies
* Work in a collaborative, multidisciplinary environment where design and sustainability go hand in hand
* Enjoy a flexible working culture, comprehensive benefits, and strong career progression opportunities

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.

Associate Director - Building Physics & Sustainability
Up to £95k
London

Are you ready to take ownership of a fast-growing sustainability and building physics function? A forward-thinking building services consultancy is looking for a highly experienced Associate Director to take a leading role in the delivery and growth of their building performance offering from their London office.

This is a rare opportunity for an experienced professional to step into a strategic leadership position-owning client relationships, delivering technical excellence, growing a team, and shaping the future direction of the sustainability function. In the medium term, there is a clear path to owning your own P&L and leading a dedicated performance engineering unit within the business.

The Opportunity
As Associate Director, you will act as the face of building performance and sustainability, leading the technical delivery of complex projects and working directly with developers, architects, and institutional investors. You will also be responsible for growing and mentoring a new team, driving innovation, and positioning the business as a leader in Net Zero and energy performance strategies.

Key Responsibilities
* Lead delivery of advanced building physics modelling, including TM54, TM59, TM52, Part L/O, and operational energy strategies
* Own and develop key client relationships and act as a senior technical advisor
* Oversee and guide the use of tools such as IES-VE, ApacheSim, and Apache HVAC
* Contribute to and review carbon assessments, compliance modelling, and Net Zero strategies
* Lead recruitment, training, and management of a growing team of performance engineers
* Represent the business externally, contributing to industry forums (e.g. UKGBC, LETI, CIBSE)
* Work closely with senior leadership to shape the service line and move towards P&L ownership

About You
* 10+ years' experience in building physics, building performance, or sustainability consultancy
* Track record of delivering and managing technically complex projects and multidisciplinary teams
* Expert user of IES-VE (especially Apache HVAC), with in-depth understanding of UK building compliance
* Strong commercial awareness, able to identify opportunities and drive growth
* Confident, credible and articulate in front of clients, design teams, and executive stakeholders
* Ambitious, entrepreneurial, and ready to lead a high-impact business unit

Why Join?
* Lead and shape a growing team in one of the UK's most progressive consultancies
* Deliver industry-leading building performance and Net Zero projects
* Build a business unit with autonomy and a pathway to P&L responsibility
* Enjoy a flexible, collaborative culture that supports personal and professional growth
* Competitive salary, bonus, hybrid working, CPD support, and a clear path to Director

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.

Intermediate Building Physics Engineer
London
Up to £45k

A multidisciplinary Built Environment Consultancy is seeking an Intermediate Building Physics Engineer to support the delivery of sustainable and energy-efficient design solutions across a broad range of sectors, including education, healthcare, commercial, and public sector projects.

You'll be part of an experienced and supportive team, working closely with senior engineers, architects, and clients to develop building performance strategies from concept through to construction.

What You'll Be Doing:
* Supporting the delivery of thermal modelling, energy analysis, and Part L compliance
* Assisting in overheating assessments, natural ventilation analysis, and thermal comfort studies
* Producing IES-VE or DesignBuilder models for energy simulations
* Collaborating on low-energy design strategies and carbon reduction studies
* Contributing to sustainability assessments such as BREEAM, WELL, and LEED
* Working with multidisciplinary teams on new-build and refurbishment projects

About You:
* 2-4 years' experience in a building physics or energy modelling role
* Familiar with IES-VE, TAS, or DesignBuilder software
* A good understanding of UK Building Regulations, TM52, TM54, TM59, and SAP/SBEM
* Eager to contribute to sustainable building design and develop your technical and consultancy skills
* Strong communication and collaboration skills

Why Join?
* Be part of a well-established consultancy delivering award-winning work across the UK
* Work on meaningful, sustainable projects with expert guidance and mentoring
* Access to clear progression routes, professional development, and chartership support
* Competitive salary and comprehensive benefits

Apply now to build your career in building performance and sustainable design.

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 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 IES-VE, TAS, or similar
* Strong knowledge of UK compliance standards and sustainable design principles
* Excellent communication skills with a confident and collaborative approach
* A passion for low-carbon, performance-driven buildings

Why Apply?
* Work on a diverse and meaningful portfolio of projects across the UK
* Be part of a forward-thinking, supportive team
* Excellent scope for career progression and professional development
* Competitive salary and benefits package

Apply now to join a consultancy committed to improving the built environment through high-performance, sustainable design.

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.