Agreement type: This is a remote full-time employment role requiring 40 hours per week, with direct hiring by the client. Preferred candidates' locations: United States, Canada, Europe, Latin America.

Our company description Mission.dev is the next-gen staffing platform for software talent. We help you find, evaluate, and manage top software talent (contractors or direct hires) faster, smarter, and more efficiently. Powered by AI. Backed by real humans.

About the client This company develops an AI-powered sales intelligence platform that provides real-time guidance to representatives during live conversations. By analyzing audio streams without visible recording bots, the system suggests discovery questions and surfaces insights to improve conversion rates and shorten sales cycles. The technology automates post-call workflows and accelerates onboarding for revenue teams by providing instant product expertise and process coaching directly within the user's desktop environment.

About the Role As a Desktop Systems Engineer, you will own the architectural layer connecting application logic with the operating system across macOS and Windows. This is a specialized systems role focused on native OS behavior, process architecture, and background services rather than standard frontend development. You will be responsible for moving performance-critical functionality from hybrid environments into native experiences. Your work will directly impact product reliability, system resource efficiency, and the seamless integration of real-time AI tools within the user’s daily workflow.

What You'll Do Develop and maintain high-performance desktop applications with deep integration across macOS and Windows. Manage OS-level behaviors including windowing, permissions, background processes, and system event handling. Architect native modules and system integrations to overcome performance limitations in hybrid application frameworks. Optimize application performance for minimal CPU, memory, and battery impact to ensure a lightweight footprint. Implement logic for user activity detection and desktop context awareness to trigger real-time features. Support the deployment of on-device local AI models to ensure low-latency processing and data privacy. Build robust systems for background agents, automated updates, and crash recovery to maintain high application availability.

What You Bring Proven experience building and shipping production-grade desktop software for macOS or Windows. Expertise in native development using languages such as Swift, Objective-C, C++, Rust, or C#. Deep understanding of desktop application architecture, including IPC, memory management, and process lifecycles. Experience managing complex OS permissions, installers, and background services. Strong engineering judgment with a focus on performance optimization and system stability. Senior engineer with at least 7+ years of software engineering experience.

Nice to Haves Experience with Electron, specifically regarding native modules and performance tuning. Background in building developer tools, productivity apps, or performance-sensitive endpoint agents. Familiarity with React or modern frontend architectures. Experience working with local AI inference or real-time audio/video processing. Strong product sensibility and an interest in native UI polish.

Compensation & Benefits Equity package included.