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We’re looking for innovative talent to join our team. See all positions and submit your CV.


Plano, TX

Wireless System Test Engineer needed in our Plano, TX office to identify and troubleshoot software issues, and provide logs using tools like QXDM, MediaTek ELT, Wireshark, and ADB; work closely with R&D team to come up with comprehensive test strategies to evaluate the fixes with a patch or in a new software version via JIRA system; perform F4L, AGPS, GCF, DFIT tests to evaluate RF signal coverage, Audio Quality, Call Performance, Data Speed, and create reports to U.S. carriers; configure lab testing environment using equipment CMW500, Nomad and Datum, and conduct RF protocol test and analyze RRC/SIP/SUPL Messages according to 3GPP protocols.


Position requires Master’s degree in Electrical Engineering and minimum 2 years of testing experience in the Wireless Communication industry to include the following: RF performance testing on Android devices with Qualcomm and MTK chipset; Hands-on experience with different testing equipment: Nomad, Datum, CMW500, Power Monitor; Network issues debugging experience with different wireless communication systems such as GSM/UMTS/LTE, 5G mmWave; deep understanding of TCP/IP(v4, v6), VoLTE E911 network architecture, wireless protocols, and regulatory requirements and certification process for U.S. carriers.


Send resumes to HR, Attn: Anna Sun, Tinno USA Inc, 2301 W Plano Pkwy, Suite 102, Plano, TX 75075, or email to

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