Senior Product Engineer, Full Stack - Energy£70,000 to £95,000PermanentLondon, hybridThe opportunityOur client is hiring a Senior Product Engineer, Full Stack, to help build the next generation of customer-facing software in the energy market.Operating in a complex, high-value sector, the business is combining technology, data, and product thinking to modernise an area of the energy industry that has historically been underserved by great software.We have already placed 3 people into the business and are pleased to be supporting them again on this important hire.This is a genuinely exciting opportunity for a frontend-strong engineer who wants real ownership, autonomy, and the chance to build products from scratch. They are looking for someone with strong React and TypeScript capability, alongside solid backend exposure across Python, APIs, and databases.As a Senior Product Engineer, Full Stack, you will play a key role in shaping what gets built, how it is built, and how it evolves as the business scales. For the right person, this is a chance to join a growing company at the right stage and make a visible impact.The role is based in Mayfair, London, with a hybrid setup of 2 to 3 days per week in the office.The roleThis Senior Product Engineer, Full Stack role has a clear frontend lean.They need someone who can build high-quality frontend products from scratch, while also working confidently across backend services, integrations, and data-driven workflows. The frontend is a c