Dex
Lead Full Stack Engineer (up to £130k)
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This role is with one of Dex's trusted partner companies. We work closely with their teams to truly understand their culture, goals, and what they're looking for, so we can match you with the right opportunity and give you context about the role before you commit to a process.
If you're interested sign up to Dex to apply.
Dex is an AI recruiter agent that helps you run your job search. Tell Dex your stack, seniority, and what you want to build. We will manage your applications and surface other opportunities that are a fit.
The role
You'll build the operating system for the UK's home decarbonisation effort. This platform is already used by hundreds of installers, halving job times and doubling sales conversion for businesses on the front lines of the energy transition. With fresh investment from leading VCs, the roadmap extends into solar, batteries, and the wider home renewables supply chain.
You'll join a 13-person engineering team, taking technical ownership for core systems and writing high-leverage code. This isn't just another CRUD app; you'll tackle heat-loss physics, geospatial analysis, LiDAR-driven 3D floor plans, and offline-first PWAs. This role is for a senior IC ready to step into formal leadership, or an existing lead who wants to stay deeply technical. It is not for someone who wants to manage people full-time or abstract away from the code.
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The work
Define technical direction and architecture for critical systems, writing foundational code and reference implementations. Solve complex problems in heat-loss physics, geospatial analysis at scale, and LiDAR-driven 3D modelling. Build offline-first collaborative PWAs and integrate with field measurement hardware via Bluetooth. Drive the expansion of the platform into new domains like solar, batteries, and the broader renewables supply chain.
What You Bring
Deep fluency in modern TypeScript across the stack: React, Node, and Prisma, with strong API design and relational data modelling. Proven track record owning ambiguous, end-to-end projects with real-world constraints (physical, hardware, geospatial). Experience mentoring senior engineers and fostering a high-trust technical culture. A product-minded approach: you seek user feedback and understand the real-world impact of your work. Eligibility to work in the UK and willingness to attend fortnightly team meetups in London or Bristol.
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Why apply through Dex
This is a rare role: high impact, deep technical challenges, and a clear mission. Dex helps you cut through the noise. Sign up once, get matched to this role and others like it, and skip the cold application process. We'll brief you properly before any interview, so you know exactly what you're getting into.
If you're interested, sign up to Dex to apply - https://jobs.meetdex.ai/jobs/4227ed47-ae57-41a0-abef-378abdc90fe6
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