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Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # [Mid Level] Software Test Engineer - 5G 4G Mobile Carrier Certification Testing (12601-1) - **Company:** JND Inc. - **Location:** Dallas, TX, United States - **Experience:** Experienced - **Contract:** Permanent contract - **Skills:** Testing (Software), 4G (Telecommunication), Software Bug Management, Software Debugging, Mobile Application Software, Regression Testing, Test Execution Engine, Wireshark, Wi-Fi Technology, Data Logging - **Published:** August 9, 2026 - **Apply:** https://www.wayup.com/i-j-Mid-Level-Software-Test-Engineer-5G-4G-Mobile-Carrier-Certification-Testing-12601-1-JND-918354212565302/ ## About the Role + Minimum 2+ years of hands-on experience in software testing for customized mobile communication terminal products (smartphones, wearables, etc.) for North American or European operators. + Strong familiarity with the testing procedures, certification processes, and node requirements of major North American operators (T-Mobile, Verizon, AT&T, and Dish). + Proficient/Fluent in Chinese (Mandarin): Must be able to facilitate direct, technical, and seamless communication/cooperation with domestic R&D project teams. + Fluent in English: Strong listening, speaking, reading, and writing skills to communicate effectively with front-line teams, local management, and carrier personnel. + Highly proficient in utilizing core logging and debugging tools (e.g., QXDM, Wireshark). + Acute eye for fault detection, proactive risk prediction, strong sense of responsibility, and high stress tolerance. + Prior experience with T-Mobile specific device validation preferred. + Experience in specialized testing areas such as Satellite network validation or Wi-Fi Passpoint environments preferred. ## Description + Seek a skilled Software Test Engineer with Chinese bilingual capability to oversee mobile software quality assurance and carrier certification testing for major North American operators. + Act as a critical technical bridge between onsite U.S. testing activities and the client's global R&D teams in Asia, ensuring seamless delivery and compliance of next-generation mobile devices. + Perform comprehensive 5G/4G protocol, Lab IOT, and live network field testing based on specific North American carrier prerequisite test cases. + Manage software defects end-to-end, escalate critical bugs and project risks, and cooperate with engineering compliance checks and regression testing. + Utilize advanced logging and debugging tools such as QXDM and Wireshark in a fast-paced, cross-functional testing environment., + Test Execution & Validation: Perform comprehensive 5G/4G protocol, Lab IOT, and live network field testing based on specific North American carrier prerequisite test cases. + Defect Management: Promptly log, track, and manage software defects in the designated bug-tracking system according to established procedures, ensuring complete resolution and closure. + Risk Escalation: Immediately detect and escalate critical software bugs, system performance blocks, or project risks to the front-end testing contacts and R&D departments. + Compliance & Compliance Checks: Cooperate with client engineering compliance checks, execute rigorous regression testing, and conduct root-cause analyses on missed tests. + Cross-Functional Collaboration: Accept and efficiently execute testing task assignments from the Software Testing Department to meet strict milestone deadlines. + Facilitate direct, technical, and seamless communication/cooperation with R&D project teams, leveraging Chinese (Mandarin) language proficiency. + Must be able to accept night-time overtime/flexible hours to accommodate time-zone differences and maintain real-time progress alignment with Asia-based R&D centers. ## Related Videos - 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