Staff/Senior Software Engineer - Desktop Application

About the role

Nexthink, a provider of digital employee experience management software, is looking for a Staff or Senior Desktop Application Engineer in Lausanne. You will join the team designing, architecting and implementing an AI-powered IT self-service chat agent delivered as a native desktop application to 20+ million endpoints. You will set technical direction for the client layer, advise engineering leadership and product, and make foundational architectural decisions for the desktop platform.

Key responsibilities

• Define and drive the technical vision and architectural strategy for the desktop client application.
• Lead the design of a high-performance, native Windows and macOS application for 20M+ endpoints.
• Partner with product, backend and AI/ML teams so the client experience fits the broader AI platform.
• Provide technical leadership on client architecture, coding standards and best practices for native desktop development.
• Deliver a reliable, secure application covering signing, packaging, installation, updates and uninstallation.
• Champion observability, crash reporting, performance monitoring and diagnostics across the client stack.
• Mentor engineers and lead technical deep dives, design reviews and roadmap discussions with leadership.
• Embed security, compliance and OS-level integration best practices from day one.

Required profile

• 7+ years of desktop application engineering experience shipping native apps on Windows and macOS.
• Proven success delivering client apps to large user bases, with deep knowledge of platform constraints.
• Exceptional communication skills and a track record of mentoring engineering teams.

Required skills

• Strong proficiency in C++ and experience building cross-platform desktop apps.
• Deep knowledge of Windows and macOS OS APIs.
• Full application distribution lifecycle: code signing, packaging, auto-updates and deployment at scale.
• Performance profiling, memory management and crash diagnostics.
• Nice to have: Rust and Tauri, React and TypeScript, REST/WebSockets/gRPC integration, endpoint telemetry and APM, and enterprise software distribution.

What we offer

• Permanent contract with a competitive compensation package.
• Hybrid work model and flexible hours.
• Unlimited vacation plus 25 holiday days and 3 company-paid volunteer days.
• On-site fitness centre, public transport half-fare reimbursement and French class reimbursement.
• Relocation package for candidates coming from another country.