Principal Electrical Engineer Fareham, Hampshire (Hybrid: typically 3–4 days in the office) From £80,000 (dependent on experience) Share options available We’re proud to be supporting one of the UK’s most exciting clean-tech innovators in their search for a Principal Electrical Engineer. This mission-led company is developing a first-of-its-kind thermal energy storage system to help decarbonise industrial heat — one of the toughest climate challenges. Their product is innovative, sustainable, and scalable — offering a zero-carbon alternative to fossil fuel boilers for industrial users. If you're passionate about solving real engineering problems with a measurable climate impact, this is a unique opportunity to shape a technology that sits at the frontier of energy storage. The Role This is a hands-on senior design role leading Caldera’s electrical capability. You’ll take ownership of power system design for thermal storage units, typically operating at 400 V AC / 2 MW scale, and help develop these into fully engineered, field-ready products. You’ll lead the specification and design of the electrical architecture — working across power distribution, protection, control integration and component selection — and contribute across the full development lifecycle. As well as hands-on technical delivery, you’ll also mentor junior engineers, manage suppliers, and guide external partners on design execution. You’ll have two direct reports: A CAD Designer supporting site integration layouts A Site Commissioning & Installation Engineer who supports field delivery What We’re Looking For A strong background in electrical engineering, ideally with experience in power systems, plant equipment, or complex product development Proven leadership experience at a senior or principal level, including mentoring and managing subcontractors Practical design expertise, with the ability to translate engineering intent into real-world solutions Experience in HVAC, renewables, process equipment, or electrical systems for plant would be highly transferable Ability to read, challenge, and contribute to electrical and multidisciplinary designs from first principles Why Join? Shape the development of a new product at the frontier of energy storage Join a mission-driven, agile team building a real solution to industrial decarbonisation Hybrid working from a well-connected HQ in Fareham Salary from £80,000 (flexible for high-alignment candidates) Share options and all travel expenses covered