About this Job:
Own Android firmware for kiosk/media devices built on Rockchip and similar SoCs.

Company Overview
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

• 13th month 
• Comprehensive healthcare insurance package MacBook / Windows laptops, monitors, and other necessary equipment to support your work. 
• Yearly team outings and events. Detailed induction, training, and on-going career development. 
• Opportunities for overseas training and travel. 
• English training programs to enhance your skills. 
• Flexible working hours from Monday to Friday. 
• Free drinks, snacks, parking, and access to internal clubs.