# Firmware Engineer - Senior

> OptiSigns Inc. · Ho Chi Minh City, Vietnam · Full-time · Posted 2025-11-14

**Workplace:** on_site

## Description

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.

## Apply

[Apply at OptiSigns Inc.](https://apply.workable.com/optisigns-inc/j/034E9F5E69/apply)

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