About Ethos Ethos is a collaborative team of engineers, consultants, and creative thinkers designing and delivering data centre and energy infrastructure across the world's most dynamic markets. As a multidisciplinary consultancy, we combine technical expertise, creativity, and integrated delivery to lead complex, mission-critical projects. Built on strong relationships, clear leadership, and a can-do mindset, Ethos is entering an exciting phase of growth, expanding our capabilities and taking on increasingly high-impact projects across EMEA and beyond. Sustainability guides how we design, collaborate, and deliver, creating innovative solutions and lasting value for our clients and communities — making Performance Made Possible. About the Job At Ethos, we’re leading the way in sustainable building services. As part of our continued commitment to innovation and environmental stewardship, we're seeking a passionate and experienced Senior Sustainability Consultant to join our dynamic team.  In this role, you'll take the lead on environmental certifications, with a particular focus on LEED AP, playing a key part in shaping sustainability strategies across a diverse range of projects including commercial, residential, and data centres. You'll collaborate closely with clients, design teams, and internal stakeholders to deliver robust and forward-thinking solutions that align with sustainability best practices and legislative requirements.  This is an exciting opportunity to influence real-world environmental outcomes while contributing to the growth and excellence of our sustainability consultancy services.  Responsibilities: • Lead and manage sustainability certification processes (LEED, EU Taxonomy, etc.). • Liaise with clients, design teams, and other stakeholders to establish sustainability criteria and project goals.  • Conduct pre-assessments, credit reviews, and gap analyses for LEED, and other rating systems.  • Coordinate and compile documentation for environmental credits and certification evidence.  • Undertake Life Cycle Assessments (LCA) to inform design and material decisions.  • Support the Sustainability Directors in evolving the company’s sustainability service offering and QA/QC processes.  • Produce clear, high-quality reports and sustainability guidance for clients and internal teams.  • Attend site visits and project meetings to monitor progress and maintain alignment with project sustainability targets.  • Mentor junior team members and oversee their contributions to project deliverables.  About You Experience & Qualifications • 5+ years' experience as a sustainability consultant or in a related role. • A degree in sustainability, construction, environmental science, engineering, or a related discipline. • LEED AP (with Speciality) qualification. • Proven experience delivering third-party certification schemes (e.g. LEED) • Experience supporting the implementation of sustainability strategies across large-scale or complex projects. • Previous experience mentoring or line-managing junior sustainability professionals. Technical Skills • Strong technical expertise and a passion for delivering measurable change in the built environment. • Strong working knowledge of environmental assessments such as LEED and EU Taxonomy. • Practical experience conducting Life Cycle Assessments (LCA). • Familiarity with net-zero carbon, operational and embodied carbon strategies. Soft Skills • Skilled at working in collaborative, multi-disciplinary environments. • Confident in managing your own workload and supporting junior consultants. • Excellent communication and stakeholder management skills. • Comfortable engaging with clients and project teams at all stages. Why Join Us? • Join collaborative leaders – Work alongside experienced, approachable professionals who combine technical excellence with calm, supportive leadership. • Make a real impact – Contribute to mission-critical infrastructure projects that support the digital and energy transition across EMEA and beyond. • Grow with us – As a rapidly growing consultancy, we offer opportunities to develop your skills, broaden your experience, and build your career. • Shape a more sustainable future – Sustainability isn't an initiative—it's embedded in every project, every discipline, and every decision we make. We offer: • Flexible Fridays and a 9-day fortnight working schedule — enjoy every second Friday off to maintain work–life balance. • A culture that values flexibility, learning, and teamwork, with clear progression pathways and support toward professional accreditation. • Opportunities to work alongside some of the most experienced engineers in the industry, within a forward-thinking, technology-driven consultancy. Benefits: • Flexible working times • 20 Days holidays up to 25 days • Pension Scheme • Refer a Friend scheme • Gym / Fitness membership Allowance • Subsidised Health Insurance Allowance • Healthcare check-ups and flu vaccinations • Working travel out-of-pocket expenses • Travel tax scheme or bike-to-work scheme • Regular training/mentoring / further college support • Support for Chartership • A Professional Subscription Fee paid by the company • Paid Statutory Leaves • Heavily subsidised social committee Recruitment Agencies: Please do not reply to this job advert. Should Ethos require assistance with this posting you will be contacted by our Talent Acquisition Team.