C# Developer – Build Greenfield Platform

About the role

We are building a next‑generation, greenfield platform from the ground up and need a C# developer who also enjoys hands‑on UI work. Based in Zug, you will help design and implement a high‑availability system that moves real‑world money from backend to browser.

Key responsibilities

• Architect and develop a new C# platform with a focus on high availability and performance.
• Design and implement robust, well‑designed APIs for internal systems and client applications.
• Continuously optimise the codebase for peak performance and maintainability.
• Collaborate on the frontend, delivering responsive and secure web applications.
• Integrate security best practices across the entire stack from day one.

Required profile

• Proven expertise in C# with substantial project experience (e.g., public GitHub contributions).
• Strong JavaScript/TypeScript abilities and a passion for building great user interfaces.
• Experience designing high‑availability systems and robust APIs.
• Attention to clean, maintainable architecture.
• Basic knowledge of Linux, Docker and networking.
• Self‑starter attitude, comfortable wearing many hats and driving end‑to‑end delivery.

Required skills

• C#
• JavaScript
• TypeScript
• Linux
• Docker
• Networking

What we offer

• Rapid growth environment with quick feedback loops.
• Collaborative team of experts in coding and trading.
• Competitive perks and a prime office location in the heart of Zug.