This position is listed on behalf of a partner company, who manages all applications and next steps. Our partner is looking for a Ruby on Rails Senior Developer based in Switzerland. Join a fully remote engineering team building scalable backend solutions for modern cloud-based applications. In this role, you will design and develop robust APIs, microservices, and integrations that power high-performance software systems. You'll collaborate with experienced engineers throughout the full software development lifecycle, contributing to architecture, implementation, testing, and production releases. The position is ideal for a developer who enjoys solving complex technical challenges, working independently, and continuously improving their craft. You'll have the opportunity to influence system design while working in a collaborative, innovation-driven environment that values accountability and technical excellence. If you're passionate about backend engineering and building scalable applications, this role offers an exciting opportunity for long-term growth.