Senior Software Engineer - IPv6 Networking

Lead end-to-end design and implementation of IPv6 features in SonicWall firewall networking stack including routing, DHCPv6, NDP, MLDv2, and PBR.

Drive IPv6 feature parity and protocol correctness across subsystems such as VPN, IPsec/IKEv2, SSL-VPN, Syslog, SNMP, and NAT64 ensuring dual-stack and IPv6-only operation.

Architect and optimize high-performance IPv6 packet processing paths and resolve complex IPv6 protocol interoperability and compliance issues.

7-9+ years of hands-on C/C++ systems development for networking platforms (routers, Layer-3 switches, CGNAT, or network security appliances).

Deep production-level IPv6 expertise covering addressing, subnetting, DHCPv6-PD, NDP, RA, MLDv2, IPv6 routing protocols (OSPFv3, BGP with IPv6 AFI/SAFI, RIPng), IPsec/IKEv2 over IPv6, IPv6 ACLs, PBR, and transition mechanisms (Dual-Stack, 6in4, NAT64, 464XLAT).

Strong understanding of L2/L3/L4 networking including Ethernet, VLANs, bridging, routing, NAT, firewall state, and VPN tunneling for IPv4 and IPv6.

Proven skills in debugging and diagnostics using tcpdump, Wireshark, GDB, kernel trace tools and network emulators (GNS3, EVE-NG). Notice Period: Not explicitly mentioned in the JD.

Experienced engineer with a strong focus on embedded network security domains and IPv6 protocol design in carrier-grade or high-performance networking products.

Capable of owning complex protocol conformance, feature parity, and architectural decisions for next-generation firewall platforms at scale.

Proven leader able to mentor other engineers and lead cross-functional IPv6 technical design and product architecture reviews.