Core platform growth engineering

Job description

Making preventive health the default for every human in Europe The mission At Lucis , we believe healthcare should be preventive, not reactive. We’re building the OS for human longevity to help people add more healthy years to their lives. You can read more about who we are and how we work here . The role We've processed 200,000+ clinical tests across 4 countries with a team of 20. We're growing 10% week over week. And we're still early. We need engineers who build systems, not features, people who own outcomes end-to-end, orchestrate AI to execute, and raise the bar for everyone around them. You won't spend your days writing boilerplate. You'll write specs that agents execute, review AI-generated code with a critical eye, and make decisions that compound over time. This is what engineering looks like now. If that excites you, keep reading. We'll shape the exact scope together, mobile, infra, platform, AI, full-stack, based on where you're strongest and where we need it most. What we are looking for: Backend: Membership & payments. A confirmed backend engineer (5+ years) who thrives on designing really reliable data models and services, without over-engineering them. You reach for the simplest model that holds. You'll own the systems membership growth runs on: subscriptions and their lifecycle, checkout and payments, promotions and partner offers. We're scaling across the EU, with the complexity that comes with it: new countries, currencies, payment methods, and regulations. This is code where a subtle bug costs real money and real trust. You care that the model is right before the endpoint exists, and that every edge case fails safely. Frontend: Engagement & world-class experience. A confirmed frontend engineer (5+ years) with very good craft and a real sensibility for design. You like things crystal clear for the user, you build neat interfaces, and you don't wait for designs to be ready to propose something delightful. You'll own what a first-time visitor meets and what keeps members coming back: the acquisition funnel, onboarding, checkout, the everyday surfaces of the product. Your work has to be delightful and reliable for people who have never heard of us and decide in minutes whether to trust us with their health. About you You’re passionate about the future of human health and want your work to help people stay healthy for longer. You move quickly…