Software Engineer (Full-stack)

We are looking for a Fullstack Software Engineer. As a startup, we move fast and priorities shift quickly. We need someone comfortable working across the entire stack and taking on varied challenges. Flexibility and adaptability is key. You'll own and develop new features from conception to deployment, ensuring reliability and scalability across our platform.In this role, you willBuild product features end-to-end, from backend APIs to frontend interfacesKeep the codebase maintainable through solid architecture, refactoring, and testingWork closely with design and product people to deliver smooth, intuitive user experiencesInstrument features and gather the right metrics to help the team make informed decisionsYou may be a good fit if you have(Required) React/Vite experience. Realistically, any modern frontend framework is fine (React, Vue, Svelte, etc.).(Required) Some experience with .NET and Entity Framework Core.Experience with DDDExperience with event-driven data architecture.PostgreSQL (or general SQL) expertise.Experience with Google Cloud Platform.Familiarity with Claude Code or other coding agent tools.Strong bias toward action and self-direction with the ability to work autonomously without much oversight.Anti-meeting culture mindset.This is neither an exhaustive nor a necessary list of capabilities. If none of these apply to you, but you believe you can contribute to Subsets, please reach out.How We WorkOur tech stackBackend: .NET 10, Entity Framework Core, PostgreSQL, Hangfire, Redis.Frontend: React.js, Vite, Tailwind CSS, shadcn/ui.Infrastructure & CI/CD: Google Cloud Platform (GCP), Terraform, GitHub Actions.Lightweight and efficient development cultureIssue tracking and planning via Linear2-week sprintsAnti-meeting culture - we value focused work timeBenefitsCompetitive salaryEquity package: 0.2%-0.4% (favorable taxation under §7p, read: no upfront tax on your options!)Company card for all things food/snacks: order whatever office snacks you like (we frequently get mango smoothies, protein drinks, barbells, monster, etc.)Great breakfast and lunch (and dinner when working late in the office)Office kayaks 🛶About the interviewWe will typically meet three times:For an introductory coffee in our Copenhagen office,For an in-depth technical interview, andFor a 2 day work trial.