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 measurable climate impact, this is a unique opportunity to shape a technology at the frontier of energy storage.

The Role
This is a hands-on senior design role leading the company’s electrical engineering capability. You’ll take ownership of the design and specification of the core electrical systems within Caldera’s product — covering power distribution (typically 400 V AC / 2 MW), protection, control integration and component selection.

Your focus will be the development and optimisation of product-level electrical systems — translating engineering intent into robust, manufacturable, and field-ready solutions. You’ll work closely with mechanical, thermal and control engineers to ensure seamless integration across disciplines.

In addition to technical leadership, you’ll:

• Mentor junior engineers
• Oversee key suppliers and subcontractors
• Guide external design partners on electrical system execution

You’ll also have two direct reports supporting the product engineering effort:

• A CAD Designer focused on system integration and internal layout
• A Commissioning & Installation Engineer who feeds site requirements back into product design and supports in-house commissioning processes

What We’re Looking For

• A strong foundation in electrical engineering, ideally with experience in power systems, plant equipment, or complex product development
• Proven leadership at Senior or Principal level, including mentoring and managing subcontractors or design partners
• Ability to translate complex requirements into practical, real-world electrical designs
• Backgrounds in clean energy, HVAC, process equipment, or electrical systems for industrial applications would be highly transferable
• Skilled in first-principles design, with a collaborative, cross-disciplinary mindset

Why Join?

• Shape the development of a new product at the frontier of clean industrial energy
• Join a mission-led team building real solutions to climate-critical challenges
• Hybrid working from a well-connected HQ in Fareham, Hampshire
• Salary from £80,000+ (flexible for high-alignment candidates)
• Share options and all travel expenses covered