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Device Driver Engineer

Embedded Linux / Open WRT

Reports to: Embedded Linux/OpenWRT Engineer (Lead)

Location: India

About the Role

Writes and maintains the kernel-level drivers that let the device's operating system talk to its specific radio chipsets and peripherals — the layer between the OS image and the physical hardware.

Key Responsibilities

• Develop and maintain Linux kernel drivers (C/C++) for the device's radio chipsets (Wi-Fi/LTE/BLE) and onboard peripherals (sensors, storage, GPIO, power management)
• Debug hardware/firmware interaction issues alongside the Embedded Systems Engineer during board bring-up
• Upstream or maintain out-of-tree kernel patches required for new hardware revisions
• Write and maintain unit/integration tests for driver code, coordinating with the QA/Test Engineer on hardware-in-the-loop coverage
• Document driver interfaces and known hardware quirks for the rest of the squad

Required Qualifications

• 4+ years of professional C/C++ development, including 2+ years writing Linux kernel or kernel-adjacent (userspace driver, HAL) code
• Experience with at least one radio/networking chipset vendor SDK (Qualcomm, MediaTek, Realtek, Nordic, or similar)
• Comfortable reading datasheets and chip errata, and debugging at the register level
• Familiar with version control and code review workflows in a small, fast-moving team

Preferred Qualifications

• Direct experience with BLE stacks or GATT services
• Experience with Open WRT or another embedded Linux distribution
• Exposure to RF test equipment or hardware-in-the-loop test rigs

Tech Stack

C/C++, Linux kernel device drivers, OpenWRT, I2C/SPI/UART, radio chipset vendor SDKs

What Success Looks Like (First Two Quarters)

Drivers for the device's core radios and peripherals merged and passing HIL regression; no P0 hard