Senior Infrastructure Network Engineer

This is not an adjacent or architectural role. Approximately 80% of your day-to-day work will be active, production-level C/C++ development.

What You’ll Do

• Design and implement network infrastructure components for a large-scale, production security platform
• Build and optimize VPN/proxy data plane solutions
• Work at the OS/kernel boundary on Linux networking internals including routing, tunneling, and protocol implementation
• Improve networking performance, throughput, and latency
• Debug and resolve complex, production-level networking issues
• Contribute to security-focused network architecture including mTLS, secure tunneling, and zero-trust design

Do you have experience in Technical troubleshooting support?, Required:

• Strong, active C/C++ experience - non-negotiable and central to the role
• True network infrastructure or networking protocol engineering background
• Systems programming depth: memory management, concurrency, and low-level OS primitives (sockets, threads, async I/O)
• Hands-on experience in at least one of the following: VPN/proxy data plane development, L4 protocol internals, OS/kernel-level networking, networking performance optimization, or security-focused network architecture
• Ability to debug complex networking issues in production
• Stable career history - 2+ years per role is the norm for this team

Strongly Preferred:

• WireGuard, OpenVPN, or TLS VPN experience
• TUN/TAP driver experience (tuntap, utun, Wintun, virtual network interfaces)
• TCP internals: retransmission, congestion control, flow control
• UDP-based protocols: QUIC, DTLS
• P2P networking and NAT traversal: hole-punching, STUN/TURN, ICE
• DNS proxying or DNS over HTTPS (DoH, DoT, CoreDNS, dnsmasq)
• Linux networking stack: routing tables, tc, qdisc
• Packet capture and diagnostics: tcpdump, Wireshark, traceroute
• Rust and/or Go experience

United States Remote $170,000 - $220,000 a year - Full-time