Principal Product Engineer

Job description

Job requirements

• A proven AI-native builder — you have taken at least one AI-powered product from concept through MVP to production scale, and you come with a specific story, not just a resume claim
• Deep hands-on fluency with AI coding and prototyping tools (Claude, Cursor, or equivalent) as a genuine force multiplier in how you design, build, and ship products
• Strong product instincts grounded in direct customer conversations — you’ve shaped what you built by talking to the people who use it
• Experience leading small, fast-moving squads and influencing product direction without relying on hierarchy
• Exceptional communication skills — written, verbal, and demo — credible with engineers, executives, and customers alike
• High bias for action and comfort with ambiguity — you make good decisions with incomplete information and don’t wait for a perfect brief
• Low ego, high standards — you’ll kill your own work when the data says to, and you know the best ideas don’t always come from you
• Experience in energy, utilities, cleantech, or adjacent domains — even if not deep
• Familiarity with home energy management devices
• Full-stack capability that lets you prototype independently without blocking on others
• A portfolio of things you’ve shipped — products, demos, or tools that prove how you work
• Experience or strong instincts around driving customer growth — particularly in how product design, onboarding, and enrollment experiences directly influence acquisition and retention

Job responsibilities

• Define, evolve and own the product vision for our end users (customers) — shaping the products, experiences, and capabilities that will define our next stage of growth
• Partner closely with Commercial, Demand Generation, and CEO leadership to identify key market and technology trends
• Turn ambiguous customer pain points into compelling product concepts, rapid experiments, and experiences that delight
• Act as a trusted product and technology voice with customers, strategic partners, and stakeholders across the energy ecosystem
• Influence not only what we build, but why we build it — balancing customer value, commercial impact, technical feasibility, and speed to market
• Turn concepts into working prototypes and demos in days, not months — good enough to test with real customers, not perfect enough to slow you down
• Partner with Commercial and Demand Generation to actively support customer growth — bringing new product concepts and working prototypes into sales conversations, pilot programmes, and client engagements
• Know when a rough AI-generated prototype is right for the moment and when production-grade engineering is needed — and apply that judgment
• Kill weak ideas early, scale promising ones aggressively, and maintain an uncompromising focus on product impact and customer value
• See hard product problems as puzzles to solve through customer insight and rapid experimentation — and bring the kind of energy and enthusiasm for building products people love that raises the bar for the entire team
• Operate with AI as a core part of your daily workflow — using tools such as Claude, Cursor, and emerging technologies to dramatically increase speed, quality, and leverage
• Set the standard for what modern AI-native product engineering looks like — combining rapid execution, technical fluency, and strong product intuition
• Share knowledge openly, challenge outdated ways of working, and raise the capability bar across the wider Technology organisation
• Push ideas forward without waiting for perfect information or full alignment — move, then adjust
• Help shape a culture that values experimentation, velocity, ownership, and commercial impact as much as technical excellence

Job benefits

• Cash amount of up to 10% of your monthly salary, to cover the cost of buying or leasing an EV
• Equity - you'll own a part of the business through our share options program
• Healthcare options - to help keep you and your family in tip-top condition (provided by Bupa & Medicash)
• Life assurance of 4x your salary
• Co-working access via WeWork (if you'd like it)
• Annual 'Team Week' whole company offsite
• L&D allowance of £1,000 per year - everyone is learning, developing and challenging themselves so we have a professional development fund per year for you to learn new skills