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# Software Engineer

- **Company:** Lefebvre Sdu
- **Location:** Netherlands
- **Experience:** Expert
- **Salary:** €6,450.0
- **Contract:** Permanent contract
- **Skills:** Amazon Web Services, User Authentication, Continuous Integration, Relational Databases, Github, PostgreSQL, MariaDB, Node.Js, OAuth, OpenID, Redis, Next.js, SQLite, TypeScript, ReactJS, Firebase, Backend, Kubernetes, Graphql, Front End Software Development, NestJS, Docker, User Administration
- **Published:** September 8, 2026
- **Apply:** https://startup.jobs/senior-software-engineer-lefebvre-sdu-8996915

## About the Role

Technical depth is a non-negotiable. You have extensive experience with TypeScript and Node.js, preferably with authentication and authorization systems in production environments, as this is the most important part of the role. You're well-versed in OAuth 2.0 / OIDC flows and aren't afraid to untangle complex system integrations around permissions and roles. You take ownership: you're comfortable with stakeholder management and proactively drive improvement, simplification, stabilization, and documentation. Frontend doesn't need to be your greatest strength, but you should be good enough at it to pick it up from time to time.

 * TypeScript / Node.js and related frameworks (e.g., NestJS, Koa)
 * Authentication and authorization (OAuth 2.0 / OIDC)
 * GraphQL / Apollo
 * Relational databases (Postgres, SQLite, MariaDB) and Firebase
 * Redis
 * Docker, CI/CD (GitHub Actions)
 * AWS / Kubernetes / Helm is a strong plus
 * Familiarity with ORMs (e.g., Prisma, MikroORM)
 * Familiarity with React / Next.js

## Description

We're bringing separate knowledge portals together into one platform, with AI as the primary way users interact with our platform. We're building GenIA-L: an agentic AI solution that understands and answers legal questions based on our own, trusted content. With you on board, the team will be able to take end-to-end ownership of its own components. In practice, the role is backend-first: you'll take ownership of business-critical Node.js services around authentication, authorization, and user management, along with components like PDF export and chat delivery via Redis. Ownership in this role at Sdu means actively driving continuous improvement, stabilization, and simplification of these systems: so you won't just be keeping the lights on. Frontend work will also come up, so a solid frontend level is desired. The product is under active development, so what you build and improve now will determine how stable and scalable this platform is a year from now.


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