Our client is an established energy & sustainability services firm, expanding their technical team and seeking an Energy Engineer to support a portfolio of industrial, commercial, and public-sector clients. The Role You will work as part of a multidisciplinary energy engineering team, delivering a mix of analytical, technical, and client-facing work across: Energy Audits & Assessments Conduct site-based energy audits across manufacturing, commercial buildings, pharma, food, datacentre and public-sector environments. Analyse energy consumption, asset performance, baseloads, tariffs, operational profiles and identify opportunities. Technical Analysis & Modelling Develop energy models, savings calculations, measurement & verification plans. Evaluate HVAC, CHP, boilers, compressed air, refrigeration, lighting, pumps, motors, BMS/controls, renewables and storage technologies. Prepare feasibility studies for energy reduction and decarbonisation projects. Design & Engineering Produce technical scopes, outline and detailed designs for energy efficiency upgrades (mechanical/electrical/controls). Support the design of optimisation strategies for HVAC, BMS, heat recovery, electrical systems, and renewable/BESS integration. Project Delivery & Implementation Work with contractors and project managers to ensure upgrades are delivered to spec. Review drawings, commissioning documentation, and performance data. Support client teams through implementation, troubleshooting and continuous optimisation. Carbon & Sustainability Work Support carbon reporting, SEAI reporting, BER/non-domestic certification, and emissions reduction planning. Assist in developing decarbonisation pathways for large organisations. The successful applicant will have: Degree in Mechanical, Electrical, Energy, Building Services, Environmental Engineering, or similar. 16+ years experience in energy engineering, HVAC/BMS optimisation, industrial utilities, sustainability consulting, or building services. Strong analytical and technical understanding of energy systems. Comfortable working with clients, presenting findings, and managing projects end-to-end. Ability to work on varied projects across industrial and commercial environments. What's in it for you? Broad project exposure across multiple sectors. Opportunity to work with a team passionate about energy, carbon, and sustainability. Hybrid working, clear progression pathways, and support for CPD/chartership (IEI, CIBSE, etc.). Work on impactful energy reduction and decarbonisation initiatives with real client impact. Skills: Energy Energy Management Energy Audit Decarbonisation Sustainability