Lead Full-Stack Engineer (all) - TypeScript

We're looking for a Lead Full-Stack Engineer (all) to drive the development of our modern, high-performing web applications. You'll take ownership of technical direction, lead a team of engineers, and ensure our product remains scalable, reliable, and thoughtfully built.

• Team Leadership: Lead, coach, and develop a team of full-stack engineers, fostering growth, clarity, and high performance.
• Application Development: Design and implement robust, scalable full-stack web applications.
• Code Quality: Ensure clean, maintainable, and testable code that meets high engineering standards.
• Architecture: Steer architecture decisions and long-term technical planning together with other leads.
• Performance: Optimize application performance and system reliability across the stack.
• Mentorship: Enable skill development, support career growth, and model best practices.
• Review & Feedback: Conduct thoughtful code reviews and drive a culture of constructive feedback.
• Documentation: Contribute to technical documentation and cross-team knowledge sharing

• Experience: 8+ years of professional software development experience.
• Leadership: Proven experience leading or mentoring engineers.
• Fundamentals: Solid understanding of full-stack development principles.
• Core Expertise: Strong expertise in TypeScript / JavaScript and Node.js.
• Frontend: Advanced experience with React and modern front-end development.
• Database Layer: Hands-on experience with ORM tools, especially Prisma.
• Backend: Extensive experience in backend development with Node.js.
• APIs: Strong experience with RESTful API design and implementation.
• Data Modeling: Experience with database schema design and data modeling.
• DevOps Foundation: Understanding of CI/CD pipelines and deployment workflows.
• Platform Ops: Familiarity with container orchestration and GitOps workflows, ideally with Kubernetes and tools like Argo CD.
• Version Control: Proficiency with Git version control.

Nice to Have

• UI Libraries: Familiarity with Chakra UI.
• Testing: Experience with testing frameworks (e.g., Playwright, Vitest).

This role can be performed in a hybrid setup from our offices inLuxembourgorBerlin, or remotely from anywhere in Germany or Luxembourg.

• An engineering-driven culture with modern tools and clean code practices.
• A product-focused environment where quality and performance matter.
• A collaborative team that values learning, pragmatism, and ownership.
• Attractive compensation aligned with your skills.
• Flexible work arrangements.
• 30 days of vacation per year.
• The chance to work on products that directly shape the future of healthcare.

With Sonia, doctors are successful doctors. We create and deploy AI-enhanced solutions that make doctors' lives easier, patients' care better, and healthcare systems more efficient. If you're proactive, impact-driven, and ready to shape the future of healthcare, join us.