About Us
ZeroTier leads the world in next-generation connectivity and cybersecurity. Our platform provides highly secure, peer-to-peer virtual networks, relied upon by millions of users and businesses — from individual users and startups to mid-scale enterprises and Fortune 500 companies. We’re backed by awesome investors including Battery Ventures, Bonfire Ventures, and Anorak Ventures.
The Role
We are seeking a skilled Software Engineer to help build, extend, and maintain the ZeroTier client, the lightweight virtual networking engine that runs on millions of devices. This role blends networking, distributed systems, and systems-level engineering, focusing on secure, reliable, and high-performance connectivity.
You will contribute to the client’s networking stack, peer discovery, session management, and data-path performance, requiring strong knowledge of network protocols, OS internals, and low-level optimization. You’ll work closely with platform, infrastructure, and security teams to evolve a cross-platform codebase that runs consistently on Linux, Windows, macOS, mobile, and embedded environments.
Your work will shape how devices join virtual networks, discover peers, establish encrypted sessions, and communicate efficiently under real-world network conditions.
