About this Job:
Own Android firmware for kiosk/media devices built on Rockchip and similar SoCs.
OptiSigns is the leading digital signage company in North America, with over 30,500 customers in 121 countries. Our cloud-based platform helps organizations manage screens and content across retail, hospitality, education, and corporate environments. We are a fast-growing, customer-obsessed team building simple, scalable, and reliable products.
The Role: Firmware Engineer
Customize Android firmware for kiosk devices; ensure security and stability; collaborate with hardware, QA, and manufacturing.
Key Responsibilities
• Develop and maintain Android firmware (AOSP) for Rockchip‑based devices.
• Integrate drivers, peripherals, bootloaders, and secure update mechanisms.
• Optimize performance, thermals, and power management.
• Partner with QA to reproduce field issues; drive fixes and releases.
Requirements
• 5+ years in firmware/embedded Android on ARM SoCs (Rockchip preferred).
• Strong C/C++/Java, BSP/bootloader knowledge, and Linux/Android internals.
• Experience with device provisioning, secure boot, and OTA.
• Professional English proficiency required.
Work Arrangement & Location
• On-site, in-office role in Ho Chi Minh City, Vietnam.
Benefits

OptiSigns is the leading digital signage company in North America, with over 30,500 customers in 121 countries using their hardware and software to display signage across a variety of industries.
Try it out at https://www.optisigns.com/