Lead Full Stack Software Engineer

Job title: Lead Full Stack Software Engineer Type: Full-time, Permanent Location: UK, with flexible home, office, or hybrid working What you'll do You will act as the technical lead for a small, focused product team building a next-generation energy modelling platform. You will guide architectural decisions, support engineers day-to-day, and help the team deliver high-quality features at pace. In this role, you will: * Lead technical direction, making pragmatic architectural decisions that balance rapid progress with long-term maintainability. * Work hands-on across the stack to turn prototypes and product flows into robust, production-ready software. * Partner with designers, product managers and data specialists to refine requirements and translate complex concepts into workable solutions. * Provide mentorship and support to other engineers through pairing, code reviews and clear technical guidance. Why this role * This is a key role within a strategic product team working on a complex, high-visibility platform. You will have real influence over how the product is built and the engineering standards it is built on. * Own the technical approach for a new product as it moves from prototype to full-scale build. * Work in a modern, cross-functional environment with autonomy and the opportunity to take on technical leadership. * Solve interesting challenges that blend UI, business logic, modelling and AI-driven behaviour. * Enjoy the stability of a permanent role while contributing to a long-term, impactful product initiative. Who is hedgehog lab We’re an outcome-driven product consultancy where product, design and research sit side by side. You’ll join a team that values curiosity, collaboration and impact, building products that truly matter. hedgehog lab benefits * 28 days holidays + bank holidays * 5 Impact Days per year to spend on L&D, volunteering or innovation * Flexible working environment * Annual wellbeing budget + two days of wellbeing leave * Mental health support * A company supplied Apple Mac Our tech stack We're tech-agnostic; however, these are our specialisms: * Front-end: React, Next.js, TypeScript * Backend: Python, PHP * Cloud and infrastructure: AWS What we are looking for * Significant experience as a senior or lead engineer * Strong background with React and TypeScript * Strong background with Python or PHP Ready to apply? Submit your application below. Please note that we’re unable to offer visa sponsorship for this role.