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# Embedded C Developer OpenSync/OpenWrt

- **Company:** Hptech Inc.
- **Location:** United States
- **Experience:** Expert
- **Contract:** Permanent contract
- **Skills:** C (Programming Language), Mobile Broadband Modems, LTE (Telecommunication), Unit Testing, Computer Networks, Continuous Integration, Dynamic Host Configuration Protocol, Software Debugging, Linux, File Systems, Memory Management, Embedded C, Event-Driven Programming, Firmware, Protocol Buffers, Internet Protocol Security (IP SEC), IPv4, IPv6, Linux Kernel, Message Queuing Telemetry Transport (MQTT), Routing, PCI Express, X.509, Broadcom, Shell Script, Tcpdump, USB, Wi-Fi Technology, Data Storage Management, Gitlab, Git, Openwrt
- **Published:** August 20, 2026
- **Apply:** https://www.dice.com/job-detail/c3691bf0-b24d-458b-a572-6e8b82d2d02b

## About the Role

* 5+ years of Embedded C development on Linux.
 * Strong C programming, IPC, memory management, and event-driven programming.
 * Hands-on OpenWrt experience including UCI, build system, packages, and filesystems.
 * Experience with OpenSync, OVSDB, MQTT, protobuf or similar CPE frameworks.
 * Strong Linux networking knowledge: IPv4/IPv6, routing, DHCP, netfilter, bridges.
 * Cellular modem integration using AT/QMI/MBIM.
 * Experience with GDB, strace, tcpdump, kernel logs, and serial console.
 * Git/GitLab, CI/CD, cross-compilation, and Shell scripting., * Qualcomm IPQ / Broadcom BCM / Atheros chipsets.
 * DOCSIS, WiFi 6/6E/7, PCIe/USB, eSIM/eUICC, TR-069/TR-369.
 * 5G NSA/SA, carrier aggregation, and ISP/MSO/OEM experience.

## Description

We are seeking an Embedded C Developer with strong Linux/OpenWrt experience to develop firmware for residential WiFi gateways supporting DOCSIS/Fiber WAN and LTE/5G cellular backup., * Develop and debug embedded C software on Linux/OpenWrt platforms.

 * Develop OpenSync managers, OVSDB integrations, and cloud-managed services.
 * Implement LTE/5G failover, modem management, WAN routing, and health checks.
 * Work with cellular modems using AT commands, QMI/MBIM, USB, and PCIe/MHI.
 * Configure and troubleshoot WiFi drivers on Qualcomm/Broadcom/Atheros platforms.
 * Debug Linux kernel, PCIe, USB, networking, and driver-level issues.
 * Implement secure connectivity using TLS/mTLS, X.509, GRE, and IPsec.
 * Develop OpenWrt UCI configurations, init scripts, storage management, and unit tests.


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