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 Network Engineer / Systems Developer 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.
More About ZeroTier
Founded in 2013 by Adam Ierymenko, ZeroTier’s mission is to make peer-to-peer networking with strong encryption so simple, secure, and intuitive that it becomes the default for the internet.
To do this ZeroTier simplifies complex networking across physical boundaries, unifying cloud and edge environments. Our network virtualization platform offers enterprise-grade software-defined networking for every device, service, and applications, whether at the edge or in the cloud. It's powerful enough for large businesses and defense applications, yet easy for individuals to use for tasks like gaming or remote access.
Our team is the best of the best, working diligently to solve the hard technical challenges underlying high-performance decentralized networking. We help our customers run networks free of handcuffs and endless minutiae. Come join us!
PLEASE NOTE: Individuals seeking employment at ZeroTier are considered without regard to race, color, religion, national origin, age, sex, marital status, ancestry, physical or mental disability, veteran status, or sexual orientation. Direct applicants ONLY. Any recruiter/3rd party submissions we receive will be considered a gift. Written CV’s and Cover Letters are encouraged. No calls please.