Wi Fi Firm Developer

Skill Set: Embedded C Development on Linux/OpenWrt, OpenSync Managers, OVSDB, UCI, MQTT, Linux Networking & LTE/5G

Job Description

• 8 + years of embedded C development on Linux-based platforms
• Strong proficiency in C programming - pointers, memory management, IPC, event-driven architectures
• Experience with OpenWrt build system, package management, UCI configuration, and JFFS2/SquashFS overlay filesystems
• Familiarity with OpenSync or similar cloud-managed CPE frameworks (OVSDB, protobuf, MQTT telemetry)
• Experience with cellular modem integration - AT commands, QMI, network interface management (rmnet/wwan)
• Strong understanding of Linux networking - routing tables, metrics, netfilter, bridge interfaces, IPv4 and IPv6 dual-stack, neighbor discovery, DHCPv4/DHCPv6, SLAAC, and prefix delegation
• Understanding of TLS handshake with mutual authentication using X.509 certificates, certificate chain validation, and secure provisioning
• Knowledge of security and tunneling protocols - GRE tunneling, IPsec, VPN overlays, and secure encapsulation for cloud-managed traffic
• Experience with event loop frameworks (libev, libuv, or similar)
• Proficiency with debugging tools - GDB, strace, tcpdump, kernel logs, serial console
• Familiarity with Git, GitLab CI/CD, cross-compilation toolchains
• Understanding of WiFi standards (802.11ax/be) and wireless driver configuration

Top Skills:

• Embedded C Development on Linux/OpenWrt
• C programming, Linux internals, debugging, IPC, event-driven design
• OpenSync/OpenWrt Platform Development
• OpenSync Managers, OVSDB, UCI, MQTT, OpenWrt build system
• Linux Networking & LTE/5G Cellular Integration
• Routing, IPv4/IPv6, failover, QMI/MBIM, modem management, GRE/IPsec