Senior Software Engineer, Sandboxes

📋 Description

• Lead sandbox product development: Design, develop, and drive improvements across agent integration
• Build secure runtime infrastructure: Develop and evolve isolated microVM-based environments with
• Improve cross-platform reliability: Address correctness, performance, and stability across macOS
• Optimize sandbox lifecycle management: Improve reliability, performance, and scalability of sandbox
• Drive architecture and technical strategy: Collaborate to evolve system architecture as product and
• Provide technical leadership: Set high standards through design/code reviews and mentorship of

🎯 Requirements

• 8+ years of software engineering experience with demonstrated technical leadership on production
• Bachelor’s degree in Computer Science, Engineering, or related field, or equivalent practical
• Experience building developer tools, desktop applications, runtime infrastructure, or comparable
• Strong understanding of the agentic software development ecosystem and how coding agents interact
• Experience with containers, virtual machines, sandboxes, isolated runtimes, or secure execution
• Strong ability to reason about security and isolation boundaries and secure-by-default behavior.

🎁 Benefits

• US compensation of $160,900–$260,700 plus equity, depending on relevant factors and location.
• Equity participation and opportunities to share in the organization’s growth.
• Remote-first environment with offices in Seattle and Paris.
• Wellness days, end-of-year wellness break, home office setup, and technology stipend.
• 16 weeks of paid parental leave after six months, PTO, and conference/course/studies training
• Medical benefits, retirement programs, holidays, and other employee perks.