Principal Sustainability Consultant (Energy focus)
🔒 Confidential Employer
Posted 7 May 2026
LOCATION
Cardiff
TYPE
Full-time
LEVEL
Mid-Senior level
CATEGORY
Consulting & Professional Services
This employer holds a UK Home Office sponsor license — sponsorship for this specific role is at the employer’s discretion
SKILLS
Energy Performance Simulation
BREEAM
WELL Building Standard
Whole Life Carbon Assessment
OneClick LCA
Project Leadership
Building Regulations Part L
Passivhaus
FULL DESCRIPTION
Principal Sustainability Consultant (Energy focus)
[Employer hidden — sign up to reveal] - Cardiff, CF23 8RD GB - Competitive - Closing date: 27 May 2026
Job Description
Principal Sustainability Consultant – South West – Cardiff. This role is based in our Cardiff office and is part of our broader Sustainability discipline with a presence in every [Employer hidden — sign up to reveal] office across the country.
Responsibilities
- Act as Discipline (sustainability) Project Lead for medium to large scale projects at all RIBA stages, including the delivery of documents to support outline and detailed planning submissions.
- Act as Workstream Lead, taking ownership of delivery and supporting senior team members in project delivery of large scale projects.
- Develop and coordinate resource and project plans where acting as Discipline Project Lead and support Discipline Project Lead in the development of resource plans where acting as Workstream Lead.
- Lead workshops with the client and design team and communicate information in a clear and concise manner.
- Effectively delegate, manage and review work undertaken by others.
- Be responsible for undertaking and supporting others on a range of detailed analyses, including, but not limited to: Energy performance simulations such as Building Regulations Part L, overheating / thermal comfort assessment, operational energy assessment; BREEAM and other core environmental certifications such as HQM and WELL; Energy strategies in support of planning (outline and detailed) and design development; Whole life carbon assessments; Net Zero carbon.
- Support in house Technical Excellence communities in advancing the firm's knowledge to allow us to stay at the cutting edge of knowledge in our industry.
- Support the mentoring and training of junior members of the team e.g. in workstream delivery, consultancy and project planning.
Qualifications
- Energy and building performance consultancy including: Advanced simulation capabilities: Building Regulations Part L assessments using Elmhurst and IES; Building Regulations Part O assessment; Thermal comfort assessments.
- Demonstrable experience in project leadership, including resource planning.
- Demonstrable experience in training/mentoring junior team members.
- Experience in completing environmental and wellbeing assessments at both design and post construction, such as BREEAM, Home Quality Mark and WELL Building Standard.
- Whole life carbon assessments, including use of online platforms such as OneClick LCA.
- Delivery of successful planning applications and experience of local authority collaboration. Experience in the local market and London market would be particularly advantageous.
Additional Qualifications
- Operational energy assessment experience will be a considerable advantage and could include: CIBSE TM54 e.g. using ApacheSim and/or ApacheHVAC; NABERS UK Design for Performance; Passivhaus (Passivhaus Planning Package (PHPP)).
- Development of holistic sustainable strategies / charters / implementation plans.
- Environmental impact assessment, specifically focusing on greenhouse gas emissions and climate change adaptation.
- Circular economy statements.
- Developing fee proposals.
- Line management experience.
About You
- Experience working at a principal level and within sustainability consultancy, looking for a new challenge within a practice at the very forefront of our field.
- Registered with a professional body and working towards Chartership. Chartership would be advantageous.
- Expertise (with a degree in an applicable field) and a passion for creating sustainable solutions.
- Confident in leading workshops with design teams.
- Relish being part of a dynamic team within a progressive and well respected firm.
- Good communication skills and an enthusiasm for working within a team environment.
- Like us, you will be serious about sustainability.
Benefits
Private medical cover, electric vehicle salary sacrifice scheme, stock options, up to 30 days of annual leave, 9 day fortnight scheme, varied social and networking events, and extensive professional and technical development schemes.
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