Middle/Senior Manual QA Engineer with Mandarin Chinese
OtherManual Qa Engineer
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Quick Summary
Requirements Summary
Fluent or native Mandarin Chinese and professional working English; Strong Manual QA experience with complex software and hardware systems; Hands-on experience testing IoT, embedded, smart-home,
Technical Tools
OtherManual Qa Engineer
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.
- Perform hands-on functional and integration testing of physical IoT devices;
- Validate end-to-end workflows from device and firmware through protocols, backend APIs, and web/mobile UI;
- Install, configure, maintain, and troubleshoot devices and test environments at the client campus;
- Test MQTT, ProtoBuf, Modbus, RS485, network connectivity, firmware upgrades, and recovery scenarios;
- Investigate defects across hardware, firmware, network, backend, protocol, and UI layers;
- Clarify technical information between Mandarin- and English-speaking engineering teams.
Requirements
~1 min read- Fluent or native Mandarin Chinese and professional working English;
- Strong Manual QA experience with complex software and hardware systems;
- Hands-on experience testing IoT, embedded, smart-home, or building-automation solutions;
- Experience with MQTT and MQTT debugging tools such as MQTTX;
- Understanding of Protocol Buffers, Modbus, RS485, REST APIs, and backend integration testing;
- Practical TCP/IP, Ethernet, Wi-Fi, DHCP, DNS/mDNS, and connectivity-troubleshooting knowledge;
- Experience testing physical hardware and embedded firmware;
- Ability to reproduce complex issues, collect logs, and produce clear defect and test documentation.
Nice to Have
~1 min read- Experience with commercial building automation systems;
- Experience testing lighting controllers, sensors, gateways, or similar embedded devices;
- Experience with OTA or firmware-upgrade testing;
- Experience with Linux, Wireshark, serial diagnostic tools, or IoT test automation.
- Work model: Onsite;
- Overlap: PST business hours;
- Target start date: October;
What We Offer
~1 min read✓Vacation and sick leave;
✓Official state holidays;
✓Professional growth through challenging projects and company-supported skills development;
✓Flexible working schedule: 8 hours per day, 40 hours per week;
✓Personal Career Development Plan;
✓Employee support program: Discount, Care, Heals, and Legal support;
✓Paid external training, conferences, and professional certifications aligned with business goals;
✓Internal workshops and seminars.
- Kirkland, WA or Bellevue, WA, United States.
Location & Eligibility
Where is the job
Bellevue, United States
On-site at the office
Who can apply
US
About this job
- Who can apply
- United States
- Posted
- 23 days ago
Listing Details
- Posted
- October 1, 2026
- First seen
- October 1, 2026
- Last seen
- October 15, 2026
Posting Health
- Days active
- 22
- Repost count
- 0
- Trust Level
- 20%
- Scored at
- October 24, 2026
Signal breakdown
freshnesssource trustcontent trustemployer trust
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