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Benison Technologies
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Open Wrt Developer

Open Wrt Developer

Benison Technologies

3 - 4 years

5 - 6 Lacs

Bengaluru

Posted:1 day ago| Platform:

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Skills Required

Automation Networking Ethernet Debugging Embedded Linux Shell scripting Packaging Firmware Troubleshooting Python

Work Mode

Work from Office

Job Type

Full Time

Job Description

Job_Description":"

Key Responsibilities

Bring up OpenWRT on multiple hardware targets (MediaTek, Qualcomm, etc.)

Create and maintain custom OpenWRT firmware images using ImageBuilder/Buildroot

Integrate and debug 4G/5G modems (Quectel, Sierra, etc.) using QMI, MBIM, PPP

Develop debug utilities and monitoring tools in Python, shell, or C for diagnostics

Customize and extend the LuCI web interface for configuration and diagnostics

Handle network driver integration , kernel configuration, and system-level tuning

Troubleshoot hardware-software issues using logs, serial consoles, and kernel tools

Work closely with hardware, QA, and platform teams for complete modem stack validation

Support multi-WAN , link failover , and routing policies in real-world deployments

Core Technical Skills

Strong expertise in OpenWRT internals (UCI, netifd, procd, ubus, hotplug)

Solid knowledge of QMI, MBIM , and modem tools like uqmi, libqmi, ModemManager

Experience with virtual Ethernet interfaces exposed by WWAN devices

Proficient in C and Python development for embedded utilities and system tools

Skilled in shell scripting and automation within OpenWRT environments

Experience customizing the LuCI web UI for configuration and diagnostics

Excellent troubleshooting skills using strace, tcpdump, usbmon, sysfs/procfs

Hands-on with driver integration for Ethernet, Wi-Fi, WWAN modules

Working knowledge of multi-WAN , mwan3 , VLANs , firewall rules , and routing

Familiarity with firmware packaging , ipk feed management, and OTA updates

Networking Knowledge

Deep understanding of TCP/IP, NAT, DHCP, DNS, VLAN, QoS , and VPN technologies

Experience with WireGuard, OpenVPN, or SoftEther on embedded devices

Complementary Skills

Knowledge of Git and experience working with CI/CD pipelines for firmware

Exposure to Yocto , Buildroot , or other embedded Linux distros

Awareness of secure firmware practices (HTTPS for LuCI, config hardening, key mgmt)

Basic understanding of hardware watchdogs, SIM failover , and device tree overlays

Ability to document technical work clearly for internal and field teams

Soft Skills

Strong debugging and problem-solving mindset

Ability to work independently in a fast-paced, high-ownership environment

Comfortable collaborating across hardware, QA, and cloud teams

Detail-oriented and proactive in identifying issues before they impact the field

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Open Wrt Developer