Senior Software Engineer - BGP Protocol Development

Key Responsibilities

• Implement the BGP-4 protocol stack - FSM, message processing (OPEN / UPDATE / KEEPALIVE / NOTIFICATION), and the 13-step route decision process
• Implement MP-BGP extensions across address families (IPv4/IPv6, VPNv4/VPNv6, EVPN) and BGP attributes (AS_PATH, MED, LOCAL_PREF, communities)
• Implement route reflection, confederations, add-path, and graceful restart; integrate with RIB/FIB and the route policy framework
• Write and test C/C++ code, debug protocol issues with Wireshark/GDB/tcpdump, and profile for convergence performance
• Mentor 2-3 junior engineers, review their code, and collaborate with the Principal Engineer on design decisions

Requirements

• 3+ years of software development experience, with 2+ years in network protocol development (BGP, OSPF, IS-IS, or similar)
• Strong understanding of TCP/IP networking fundamentals and routing concepts
• Hands-on experience implementing or debugging network protocols in production environments
• Experience with the Linux networking stack and systems programming

Nice to Have

• Experience with open-source routing software (FRR, BIRD, GoBGP)
• Understanding of MP-BGP for VPN services (L3VPN, EVPN)
• Knowledge of BFD for fast failure detection
• Experience with CI/CD pipelines and automated testing

Key Skills

• C/C++
• BGP-4 (RFC 4271)
• MP-BGP
• Route Reflection
• Wireshark
• GDB
• Valgrind
• Netlink
• Git

What You'll Gain

• Work on cutting-edge network operating system used in carrier-grade deployments
• Learn from experienced Principal Engineers and System Architects
• Deep technical expertise in BGP and network systems programming
• Career growth path to Lead Engineer and Principal Engineer roles

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