We Make Big Ideas Happen

The Tinno team is comprised of 4,000 employees worldwide and over 1,500 experienced R&D staffs with over 15 years of experience in the industry. We uphold our mission and continued efforts to be a key global provider of mobile communication products and services with innovation, transparency, and best business practices.

 

We have 4 offices in the United States: Plano (TX), Alpharetta (GA), Seattle (WA), Los Angeles (CA),  and several testing sites in Dallas, Los Angeles, Miami, Philadelphia, and Seattle. 

JOB OPENNINGS

SR. TESTING ENGINEER

Plano, TX

Sr. Testing Engineer needed in our Plano, TX office to plan, prioritize, and lead multiple engineering support assignments and projects, and provides customer and lab supports on site.

 

Requirement:

  • 5 years’ experience on software QA/software development experience (telecom industry preferred).

  • In-depth knowledge and hands-on experience of wireless technologies including GSM/CDMA/WCDMA/LTE/5G and Radio.

  • Demonstrated experience in functional and performance testing.

  • Good knowledge in IMS SIP (Session Initiated Protocol), Message Session Relay Protocol (RCS), VoLTE & IR94 call processing.

  • Familiarity and understanding of 3GPP specifications and U.S. Carrier Requirements (AT&T/T-Mobile/Verizon/TracFone)

  • Plan, organize and prioritize multiple engineering support assignments and projects in small testing teams as directed by the head of department and/or other departmental leaders.

  • Ability to take ownership and bring innovations in test methodology.

  • Strong verbal and written communication skills.

 

Preferred Skills:

  • Previous experience of 5G NR technology is preferred.

  • Fluency in Chinese (Mandarin) is preferred

10-20% Travel Required

FIELD TESTING ENGINEER

Plano, TX

Filed Testing Engineer needed in our Plano, TX office to

execute field/lab test for US carriers (AT&T/T-Mobile/Verizon/TracFone), analyze failure logs and track issues until they are resolved.

 

Requirement:

  • 3 years of hands-on experience in mobile device testing/failure analysis with system simulators and in field, including 3G, 4G, 5G.LTE, VOLTE.

  • Ability to collect log, track defect, debug end to end system performance and functional issues.

  • Experience in Mediatek Tools (ELT); Qualcomm Tools (QXDM, QCAT).

  • Familiarity with U.S. Carriers requirements and certification procedures (AT&T/T-Mobile/Verizon/TracFone).

  • Strong wireless technologies background including 5G SA/ NSA, 4G/ LTE, VoNR, VoWiFi, AGPS, IMS protocol and VoWifi call flow.

  • Deep understanding of modem protocol layer stack – L1, MAC, RRC for 3G/LTE/5G.

  • Ability to take ownership and bring innovations in test methodology.

  • Strong verbal and written communication skills.

 

Preferred Skills:

  • Previous experience of 5G NR technology is preferred.

  • Fluency in Chinese (Mandarin) is preferred

  • 40% Travel Required