via Reed · 6 October 2026 ·4 days ago

Building Physics Engineer

Hays Specialist Recruitment Limited
Cardiff Full-time GBP 35,000 – 55,000
This listing is from Reed
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Hays are delighted to be partnering with a leading multidisciplinary Building Services Consultancy that operates across the UK. Due to continued growth and an expanding project portfolio, they are seeking a talented Building Physics Engineer to join their Cardiff office.
This is an excellent opportunity to become part of a forward-thinking consultancy that places sustainability, innovation, and technical excellence at the centre of everything they do. You'll work on a diverse range of projects across sectors including commercial, healthcare, education, residential, defence, and public sector developments.

The Role:
As a Building Physics Engineer, you will play a key role in helping clients achieve their sustainability and net-zero ambitions through the delivery of building performance analysis and energy modelling services.

Your responsibilities will include:

  • Dynamic thermal modelling using IES-VE.

  • TM52 and TM59 overheating assessments.

  • Energy and carbon assessments.

  • Part L compliance calculations.

  • NABERS and operational energy modelling support.

  • Daylight and sunlight assessments.

  • Building performance optimisation and façade analysis.

  • Supporting sustainability and net-zero carbon strategies.

  • Collaborating with MEP engineers, architects and wider design teams throughout project lifecycles.
What You'll Need to Succeed:
  • Experience within a Building Physics, Sustainability or Building Services environment.

  • Proficiency using IES-VE software.

  • Knowledge of UK Building Regulations and energy compliance requirements.

  • Experience undertaking thermal and energy modelling assessments.

  • Strong communication skills and the ability to work collaboratively within multidisciplinary teams.

  • A genuine passion for sustainable design and low-carbon buildings.
Desirable:
  • Familiarity with BREEAM, NABERS or Passivhaus principles.

  • Experience delivering operational energy modelling.

  • Relevant degree in Building Services Engineering, Sustainability, Environmental Engineering or a related discipline.
What You'll Get in Return:
  • Competitive salary and annual review process.

  • Flexible and hybrid working arrangements.

  • Company pension scheme.

  • Private healthcare.

  • Professional membership support.

  • Structured career development and progression opportunities.

  • Exposure to prestigious projects across the UK.

  • Opportunity to contribute towards meaningful net-zero and sustainability objectives.
Apply Now:
If you're a Building Physics Engineer looking to develop your career with one of the UK's leading Building Services consultancies, we'd love to hear from you.
Apply today or contact Hays Building Services for a confidential discussion.

Hays Specialist Recruitment Limited acts as an employment agency for permanent recruitment and employment business for the supply of temporary workers. By applying for this job you accept the T&C's, Privacy Policy and Disclaimers which can be found at hays.co.uk

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