Staff/Senior Desktop Application Engineer

Nexthink is the leader in digital employee experience management software. The company provides IT leaders with unprecedented insight allowing them to see, diagnose and fix issues at scale impacting employees anywhere, with any application or network, before employees notice the issue. As the first solution to allow IT to progress from reactive problem solving to proactive optimization, Nexthink enables its more than 1,500 customers to provide better digital experiences to more than 25+ million employees. Dual headquartered in Lausanne, Switzerland and Boston, Massachusetts, Nexthink has 9 offices worldwide. We are looking for a Staff or Senior Desktop Application Engineer to be part of the team designing, architecting, and implementing our AI-powered IT self-service chat agent — a native desktop application distributed to 20+ million endpoints worldwide. This client is the face of Nexthink’s AI platform, giving employees a seamless, responsive experience directly on their Windows and macOS devices. As a Senior Desktop Engineer, you will go beyond implementation: you will set technical direction for the client layer, influence cross-team design decisions, and serve as a trusted advisor to both engineering leadership and product. You’ll tackle problems of performance, reliability, and native OS integration while partnering with backend, infra, and security teams to ship a production-grade application at global scale. This is a high-impact, high-ownership role where you’ll make foundational architectural decisions about the client platform and help shape the desktop engineering practice at Nexthink. Responsibilities Define and drive technical vision and architectural strategy for the desktop client application. Lead design of a high-performance, native desktop application running on Windows and macOS at 20M+ endpoints. Partner with product, backend, and AI/ML teams to align the client experience with the broader AI platform. Provide technical leadership on client arch