QA Engineer (Firmware & Device)

Top 3 reasons to join us

• Competitive salary
• Full statutory insurance
• Professional, international working environment

Job description

About the role:

The QA Engineer (Firmware / Device) is responsible for validating the firmware and hardware-software integration of Safetrust's readers, sensors, and gateways. This position plays a key role in the QA organization, ensuring devices behave correctly across BLE, Wi-Fi, NFC, secure boot, OTA updates, and the full credential-presentation flow.

This role focuses on hands-on device testing, tooling, and defect triage, and contributes to Safetrust's continued growth by ensuring firmware releases are reliable in real environments before they reach customers.

Key Responsibilities:

• Design, develop, execute, and maintain comprehensive test plans, test cases, and validation procedures for embedded firmware and connected devices.
• Perform functional, integration, regression, system, interoperability, end-to-end, performance, stress, endurance, and environmental testing across Safetrust's embedded product portfolio.
• Validate firmware functionality across BLE, Wi-Fi, NFC, Ethernet, USB, wired, and other communication interfaces under normal and adverse operating conditions, including edge cases such as low signal strength, interference, and power loss.
• Verify secure boot, OTA firmware updates, factory provisioning, credential management, encryption, and recovery mechanisms.
• Develop automated test scripts, frameworks, and small tooling using Python, Shell, or other scripting languages to improve regression coverage, testing efficiency, and log analysis.
• Design, build, maintain, and continuously improve hardware test labs, fixtures, automation rigs, racks, instrumentation, and validation environments.
• Investigate firmware defects and customer-reported field issues by collecting logs, reproducing issues, analyzing root causes, and partnering with engineering teams to resolve problems.
• Track and document defects with detailed reproduction steps, logs, risk assessments, impact assessments, and recommended corrective actions in the bug-tracking system.
• Participate in design reviews, requirements reviews, and release readiness activities to ensure quality is built into products early.
• Collaborate with Firmware, Embedded Linux, Hardware, AI, Mobile, Cloud, and Product teams throughout the software development lifecycle.
• Develop and maintain regression test suites supporting continuous integration, continuous delivery pipelines, and release sign-off criteria.
• Monitor quality metrics including defect leakage, regression coverage, release readiness, and production quality trends.
• Support manufacturing validation, production testing, and investigation of customer-reported field issues.
• Continuously improve QA methodologies, automation coverage, and testing standards across Safetrust's engineering organization.

Your skills and experience

Skills & Experience:

• Bachelor's degree in Computer Engineering, Electronics, Information Technology, or a related field.
• 1–3 years of QA experience, ideally on hardware/firmware or IoT products (Junior: 1–2; Middle: 2–3+).
• Working knowledge of software QA methodologies, test planning, and bug-tracking tools (Jira or similar).
• Comfortable using lab equipment such as multimeters, logic analyzers, and serial console tools.
• Basic scripting in Python or shell for log parsing and test automation.
• Understanding of common protocols: BLE, Wi-Fi, TCP/IP, USB, UART.
• Strong attention to detail, methodical approach, and good written English for clear bug reports.

Nice to Have / Preferred

• Experience with access-control, RFID/NFC, or IoT device testing.
• Exposure to test automation frameworks (pytest, Robot Framework).
• Familiarity with embedded debug tools (J-Link, ST-Link, oscilloscopes).
• ISTQB Foundation Level certification.

Success Profile:

The ideal candidate is:

• Methodical and detail-oriented when validating hardware/firmware behaviour.
• Hands-on and comfortable working directly with lab equipment and physical devices.
• A clear communicator who writes precise, reproducible bug reports.
• Able to triage and troubleshoot issues independently before escalating.
• Comfortable working across regions and functions in a global environment (Vietnam, US, Australia).

Why you'll love working here

• Competitive salary based on experience and performance
• 13th-month salary 
• Daily lunch is provided at the office
• Free coffee, tea, and refreshments
• Full statutory insurance (social, health, unemployment)
• Annual health check-up and paid annual leaves
• Professional, international working environment