Software Development

Akvelon

501-1000

We are looking for a Middle / Senior Manual QA Engineer - IoT / Mandarin Chinese to validate an IoT ecosystem across physical devices, embedded firmware, communication protocols, backend services, and web/mobile applications. The role combines end-to-end quality ownership with onsite work at the client campus and communication with the China-based firmware team.
<h2>Tasks</h2>
<ul>
<li>Perform hands-on functional and integration testing of physical IoT devices;</li>
<li>Validate end-to-end workflows from device and firmware through protocols, backend APIs, and web/mobile UI;</li>
<li>Install, configure, maintain, and troubleshoot devices and test environments at the client campus;</li>
<li>Test MQTT, ProtoBuf, Modbus, RS485, network connectivity, firmware upgrades, and recovery scenarios;</li>
<li>Investigate defects across hardware, firmware, network, backend, protocol, and UI layers;</li>
<li>Clarify technical information between Mandarin- and English-speaking engineering teams.</li>
</ul>
<h2>Requirements</h2>
Requirements:
<ul>
<li>Fluent or native Mandarin Chinese and professional working English;</li>
<li>Strong Manual QA experience with complex software and hardware systems;</li>
<li>Hands-on experience testing IoT, embedded, smart-home, or building-automation solutions;</li>
<li>Experience with MQTT and MQTT debugging tools such as MQTTX;</li>
<li>Understanding of Protocol Buffers, Modbus, RS485, REST APIs, and backend integration testing;</li>
<li>Practical TCP/IP, Ethernet, Wi-Fi, DHCP, DNS/mDNS, and connectivity-troubleshooting knowledge;</li>
<li>Experience testing physical hardware and embedded firmware;</li>
<li>Ability to reproduce complex issues, collect logs, and produce clear defect and test documentation.</li>
</ul>
Nice to Have:
<ul>
<li>Experience with commercial building automation systems;</li>
<li>Experience testing lighting controllers, sensors, gateways, or similar embedded devices;</li>
<li>Experience with OTA or firmware-upgrade testing;</li>
<li>Experience with Linux, Wireshark, serial diagnostic tools, or IoT test automation.</li>
</ul>
Working Conditions:
<ul>
<li>Work model: Onsite;</li>
<li>Overlap: PST business hours;</li>
<li>Target start date: October;</li>
</ul>
Benefits:
<ul>
<li>Vacation and sick leave;</li>
<li>Official state holidays;</li>
<li>Professional growth through challenging projects and company-supported skills development;</li>
<li>Flexible working schedule: 8 hours per day, 40 hours per week;</li>
<li>Personal Career Development Plan;</li>
<li>Employee support program: Discount, Care, Heals, and Legal support;</li>
<li>Paid external training, conferences, and professional certifications aligned with business goals;</li>
<li>Internal workshops and seminars.</li>
</ul>
Locations:
<ul>
<li>Kirkland, WA or Bellevue, WA, United States.</li>
</ul>

Middle/Senior Manual QA Engineer with Mandarin Chinese

Freelance

System Administrator (On-Site)

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