Principal Sustainability Consultant South West - Cardiff We are delighted to be partnering with a highly regarded engineering consultancy known for delivering intelligent, sustainable, and people-centred solutions across the built environment. Due to continued growth, they are seeking an ambitious and forward-thinking Principal Sustainability Consultant to join their established Sustainability team in Cardiff. Role Benefits 9-day fortnight working pattern Inclusive community groups and active social networks Comprehensive technical and professional development programmes Private medical insurance Electric vehicle salary sacrifice scheme Share/stock options Up to 30 days' annual leave Key Responsibilities Lead sustainability workstreams and act as Discipline Project Lead. Develop and manage project resource plans. Prepare and deliver sustainability statements and reports for planning submissions. Facilitate and lead client and multidisciplinary design team workshops with confidence. Delegate, manage, and review work produced by junior team members. Undertake or oversee: Part L, Part O, overheating and energy modelling Environmental and wellbeing assessments (BREEAM, WELL, HQM) Whole life carbon assessments Net zero carbon strategies Operational energy analysis Contribute to Technical Excellence communities and support internal knowledge sharing. Mentor and train junior colleagues across technical delivery, consultancy skills, and project management. Candidate Requirements Advanced experience in building performance modelling, including Part L, Part O, and thermal comfort assessments. Proven ability to lead sustainability workstreams and multidisciplinary project teams. Demonstrated experience in mentoring and training junior staff. Strong track record delivering environmental and wellbeing assessments. Whole life carbon assessment experience (One Click LCA desirable). Experience supporting successful planning applications; knowledge of the Cardiff and London markets would be advantageous. If you are interested in this role or other opportunities within Sustainability and Energy, please contact Caitlin Richards for further information. This is a permanent position. Penguin Recruitment is acting as a Recruitment Agency in relation to this vacancy