Senior Developer, Endpoint Agent

1Password is growing faster than ever, surpassing $400M in ARR and earning a spot on the Forbes Cloud 100 for four consecutive years. We are building the foundation for a safe, productive digital future by ensuring every identity is authentic, every application sign-in is secure, and every device is trusted. As a Senior Engineer, you will join the team that owns our device-resident agent, expanding how 1Password software is installed, configured, and managed across customer devices. You will work on a deeply technical client daemon that runs directly on macOS, Windows, and Linux as a background service, with close integration into each operating system. In this role, you will help design and build mechanisms that simplify enterprise deployment while ensuring reliability, security, and observability at scale. Your primary focus will be the endpoint agent and its communication model, and you will also shape the contracts and supporting services around it. This is a remote opportunity within Canada and the US. **What we're looking for:** - 5+ years of experience developing system-level or device-resident software for macOS or Windows - Strong proficiency in Go - Experience developing background services (e.g., Windows Services, macOS launchd) - Solid understanding of OS concepts: file systems, permissions, process lifecycle, and privilege boundaries - A passion for and experience with security development best practices, coding standards, and design patterns.