Key Responsibilities
- Develop and customize OpenWrt build systems for operator-specific router distributions
- Build high-performance network stacks and middleware for Wi-Fi 6/7 & 5G-FWA routers
- Implement TR-181/USP/TR-369 device management standards for global operators
- Design scalable, modular embedded Linux systems for complex CPE environments
- Debug and resolve critical issues: kernel panics, memory leaks, race conditions
- Collaborate with hardware and product teams to deliver carrier-grade solutions
Must-Have Skills
- OpenWrt Proficiency: Customizing build systems, package configurations, feeds
- Programming: Advanced C/C++ for resource-efficient, high-performance networking
- Network Stack & Protocols:
- IPv4/IPv6: Dual-stack, DHCPv4/v6, SLAAC, Prefix Delegation, MAP-T/E, DS-Lite
- L2/L3: Linux Bridge, VLAN 802.1Q/QinQ, SoC hardware offloading
- Routing: Multi-WAN, Failover, Policy-Based Routing, IGMP/MLD Snooping/Proxy
- Device Management: TR-181/TR-098 data models, USP/TR-369 experience
- Debugging: GDB, Valgrind, JTAG, Wireshark, Tcpdump
- System Design: Defining software interfaces & integrating cross-platform middleware
Preferred Qualifications
- Hands-on with Airoha SDKs & MediaTek WiFi drivers
- Familiarity with RDK-B, prplOS, prplLCM
- QoS/QoE: Traffic Shaping - tc, HTB, FQ_CoDEL, DPI, traffic classification for Gaming/VoIP
- Security: Firewall4/Nftables, Iptables, VPN - WireGuard, IPsec, hardware crypto-acceleration
Skills:- OpenWRT, C, C++, IPv4, IPv6, L2/L3, VLAN 802, Routing and TR-181/TR-098 data models
