At CASUS, we’re building AI-powered tools to revolutionize legal and compliance workflows. We’re looking for a Fullstack Engineer with a backend focus and a hacker’s mindset to join our team. In this role, you’ll design, prototype, and ship features that leverage our modern tech stack (Node.js, TypeScript, React, Firestore, Google Cloud, and Azure LLMs).

You’ll thrive if you:

• Love building from 0 to 1 and validating ideas quickly.
• Have a backend-leaning fullstack skillset but enjoy collaborating across the stack.
• Are curious about AI integration (e.g., LangChain, Azure LLMs) and want to push boundaries.
• Prefer startup speed over corporate processes.

This role is ideal for someone who wants to shape a product, work with cutting-edge tech, and see their code in the hands of real users - fast.

• Backend Development: Build and maintain scalable APIs, database schemas (Firestore), and cloud services (Google Cloud).
• Prototyping: Rapidly validate new features (e.g., AI agents, Word Add-ins) with POCs and iterate based on feedback.
• Fullstack Collaboration: Work on frontend components (React, TypeScript) when needed, with a focus on backend logic.
• AI Integration: Experiment with AI frameworks (LangChain, Azure LLMs) to enhance our product’s capabilities.
• Testing & QA: Ensure code quality with automated tests and contribute to our CI/CD pipelines.
• Ownership: Take end-to-end responsibility for features, from design to deployment.

Essential:

• 5+ years of Fullstack development with a backend focus (Node.js, TypeScript).
• Experience with NoSQL databases (Firestore or similar) and cloud platforms (Google Cloud/Azure).
• Prototyping skills: Ability to build quick POCs (proof-of-concept) and iterate.
• Startup mentality: Comfortable with ambiguity and building products from scratch.
• Collaboration: Enjoy working in cross-functional teams and mentoring others.

Preferred:

• Experience with AI agent frameworks (LangChain, etc.) or Office.js (Word Add-ins).
• Knowledge of legal/Compliance-tech or similar domains.
• German language skills (not required).

Soft Skills:

• Proactive and curious – you love solving problems creatively.
• User-focused – you care about building products that people actually want to use.

What We Offer

• Impact: Your work will directly shape a product used by thousands of legal professionals.
• Flexibility: Potential to work remote (within ±2-3h of Zurich) or onsite in Zurich.
• Tech Stack: Modern tools (TypeScript, React, Node.js, Google Cloud, AI APIs).
• Culture: Flat hierarchies, fast decisions, and a people-first approach.
• Growth: Opportunities to learn and experiment with AI, scalability, and cutting-edge tech.
• Sports & food: Free sports classes from spinning to Pilates and weekly brunch.

CASUS simplifies legal compliance with AI-powered tools. Our mission is to make complex workflows intuitive and efficient for businesses worldwide. Founded in 2019, we’re a fast-growing team of engineers, lawyers, and designers based in Zurich.