Apex 2000
Apex 2000

Embedded C Developer – OpenSync/OpenWrt WiFi Router with Cellular

Denver, CO, US • Posted 4 hours ago • Updated 4 hours ago
Contract W2
12 Months
75% Travel Required
On-site
Depends on Experience
Fitment

Dice Job Match Score™

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Job Details

Skills

  • Required Skills • 5+ 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: 1. Embedded C Development on Linux/OpenWrt o C programming
  • Linux internals
  • debugging
  • event-driven design 2. OpenSync/OpenWrt Platform Development o OpenSync Managers
  • OVSDB
  • UCI
  • MQTT
  • OpenWrt build system 3. Linux Networking & LTE/5G Cellular Integration o Routing
  • IPv4/IPv6
  • failover
  • QMI/MBIM
  • modem management
  • GRE/IPsec

Summary

Embedded C Developer – OpenSync/OpenWrt WiFi Router with Cellular
Location: Denver, CO
Duration: 9-12 Month

JD

Required Skills

• 5+ 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:

1. Embedded C Development on Linux/OpenWrt

o C programming, Linux internals, debugging, IPC, event-driven design

2. OpenSync/OpenWrt Platform Development

o OpenSync Managers, OVSDB, UCI, MQTT, OpenWrt build system

3. Linux Networking & LTE/5G Cellular Integration

o Routing, IPv4/IPv6, failover, QMI/MBIM, modem management, GRE/IPsec


 

Employers have access to artificial intelligence language tools (“AI”) that help generate and enhance job descriptions and AI may have been used to create this description. The position description has been reviewed for accuracy and Dice believes it to correctly reflect the job opportunity.
  • Dice Id: 10121431
  • Position Id: 9137217
  • Posted 4 hours ago
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