PRINCIPAL ENERGY and SUSTAINABILITY CONSULTANT Watford / Hybrid Competitive Salary + Benefits Full-Time, Permanent Thomas Search are partnering with a respected sustainability and building performance consultancy at the forefront of shaping the future of net-zero, low-carbon development across the UK. As they continue to expand their specialist consultancy services, we are seeking to appoint a Principal Energy and Sustainability Consultant to play a key leadership role in delivering strategic, high-impact sustainability outcomes across major development and regeneration projects. This is a standout opportunity for an established sustainability specialist to step into a client-facing leadership role, supporting the growth of service lines, mentoring emerging consultants, and helping to shape the industry s response to climate, carbon and building performance challenges. The Role As Principal Consultant, you will lead a portfolio of technical consultancy work across energy strategy, Part L compliance, sustainability frameworks, carbon reduction, circular economy planning and wider environmental advisory. Working closely with clients, design teams, planners and developers, you will influence key project decisions from early concept stage through delivery, ensuring robust, future-proof sustainability outcomes. You will also play a central role in guiding junior team members, contributing to service development, and strengthening client relationships. Key Responsibilities Te