_{01st December, 2025}

Principal Sustainability Consultant

Location: Cardiff (South West Region)

Contract: Full-time

An exciting opportunity has arisen for an experienced and forward-thinking Principal Sustainability Consultant to join a leading UK engineering and sustainability consultancy.

This role is based in Cardiff and forms part of a nationwide sustainability team renowned for delivering innovative, human-centred and environmentally responsible design solutions.

About the Role:
As a key member of the sustainability discipline, you will take a leading role in shaping sustainable outcomes across a diverse range of medium to large-scale projects. Your work will span all RIBA stages and will involve close collaboration with clients, design teams and internal specialists.

In this varied and influential position, you will:

• Lead sustainability workstreams and act as Project Lead on significant projects.
• Develop and coordinate resource and project plans.
• Facilitate workshops and present complex information clearly and confidently.
• Delegate, manage and review work delivered by colleagues.
• Undertake and support a wide range of detailed analyses, including:
  
  • Building performance and energy modelling (e.g. Part L, Part O, thermal comfort).
  • Environmental and wellbeing certifications such as BREEAM, HQM and WELL.
  • Energy strategies for planning and design.
  • Whole life carbon assessments and net zero strategies.
• Contribute to internal technical excellence initiatives.
• Mentor and support junior team members with professional development.

This is a rare chance not only to advance your own career, but also to influence the industry’s approach to sustainability on a broader scale.

What We’re Looking For:
You will bring expertise in sustainability consultancy and a passion for driving positive environmental outcomes.

While not all competencies are required, applicants should have strong capabilities in several of the following areas:

Core Competencies:

• Advanced building performance and energy consultancy, including:
  
  • Part L assessments (e.g., Elmhurst, IES)
  • Part O assessments
  • Thermal comfort analysis
• Proven experience in project leadership and resource planning.
• Track record in mentoring junior team members.
• Experience delivering BREEAM, Home Quality Mark, WELL or similar assessments.
• Knowledge of whole life carbon assessment tools (such as OneClick LCA).
• Experience supporting successful planning applications and working with local authorities.

Advantageous Competencies:

• Operational energy assessment (e.g., TM54, NABERS UK, PHPP).
• Development of holistic sustainability strategies or charters.
• Environmental impact assessment focused on GHG emissions and climate adaptation.
• Circular economy statements.
• Fee proposal development.
• Line management experience.

About You:

• Experienced at Principal level within sustainability consultancy.
• Degree-qualified in a relevant field, with professional registration; working towards Chartership (or Chartered status) is advantageous.
• Confident in leading design team workshops and engaging stakeholders.
• Passionate about sustainability and motivated to work in a dynamic, collaborative environment.
• Strong communicator with excellent organisational and problem-solving skills.

What’s on Offer:
You will join a supportive and progressive consultancy that values individuality, wellbeing and continuous development. Expect access to:

• Structured career pathways.
• Professional and technical development programmes.
• Inclusive networks, social and industry engagement opportunities.
• A comprehensive benefits package, including private medical cover, electric vehicle schemes, stock options and generous annual leave.
• A 9-day fortnight working pattern designed to support work–life balance.

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