ZeroTier, Inc.
11 - 50 employees
Founded 2015
📡 Telecommunications
🏢 Enterprise
Telecommunications • Networking • Enterprise
ZeroTier, Inc. is a company that simplifies global networking by providing software solutions for secure and seamless connectivity across various devices and networks. Their platform allows users to create private networks, connect IoT devices, and access resources securely without traditional VPN complications. ZeroTier's services cater to individuals, IT teams, and developers, offering features like end-to-end encryption, device-centric architecture, and software-defined networking. The company emphasizes ease of use, scalability, and security, making it suitable for both personal and commercial network management needs.
Staff Network Engineer – Low-Level Networking Agent
Job not on LinkedIn
🕒 December 13, 2025
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ZeroTier, Inc.
11 - 50 employees
Founded 2015
📡 Telecommunications
🏢 Enterprise
Telecommunications • Networking • Enterprise
ZeroTier, Inc. is a company that simplifies global networking by providing software solutions for secure and seamless connectivity across various devices and networks. Their platform allows users to create private networks, connect IoT devices, and access resources securely without traditional VPN complications. ZeroTier's services cater to individuals, IT teams, and developers, offering features like end-to-end encryption, device-centric architecture, and software-defined networking. The company emphasizes ease of use, scalability, and security, making it suitable for both personal and commercial network management needs.
📋 Description
• Participate in design and implementation strategies to enhance and improve ZeroTier’s networking agent. • Develop and maintain communication primitives using protocols such as TCP and UDP, as well as custom transport layers. • Implement secure tunneling, NAT traversal techniques, and robust reconnection/keepalive mechanisms. • Work with low level, OS-specific operations (sockets, netlink, firewall rules, etc.) to optimize data paths. • Profile and optimize network performance (latency, throughput, connection reliability). • Build cross-platform abstractions enabling the agent to run in varied environments. • Write clean, maintainable, well-tested code and contribute to architecture documentation. • Collaborate with cross-functional teams on system design, threat modeling, and deployment strategies.
🎯 Requirements
• Senior Level experience in network engineering or systems programming. • Strong proficiency in C, C++ or Rust for low-level development. • Deep understanding of: • - Networking and protocols: OSI Model, IPv4/IPv6, IP routing, Ethernet • - Internet routing, including IPAM, firewalls, NAT, multipath • - NAT traversal techniques (STUN/TURN/ICE, hole punching) • - Encryption standards and secure session establishment • Experience with Linux and/or Windows networking internals and socket programming. • Familiarity with overlay networks, VPN tunneling, mesh networking, or SD-WAN. • Solid debugging and performance profiling skills using tools like tcpdump, Wireshark, perf, strace, etc. • Ability to write technical documentation and communicate effectively with team members. • Experience in a startup or fast-paced environment is a strong plus.
🏖️ Benefits
• 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.
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