Modem System Test Engineer, 6G/5G Air Interface
Confirmed on the employer's own hiring board on Oct 28, 2026. First seen by Alion on Jul 3, 2026. Qualcomm scores B on the Alion truth index.
Company:
Qualcomm CDMA Technologies, Y.K.Job Area:
Engineering Group, Engineering Group > Software Applications EngineeringGeneral Summary:
General Summary
As a leading technology innovator, Qualcomm pushes the boundaries of what's possible to drive the evolution of wireless connectivity, delivering industry-leading modem innovations across 5G and next-generation cellular technologies. Qualcomm’s modem innovation have enabled breakthrough advances in performance, power efficiency, global interoperability, and commercialization at scale.
We are seeking a motivated engineer to join the Modem System Test (MST) team inTokyo. In this role, you will contribute to building next-generation wireless technologies including 5G NR and emerging 6G systems, with opportunities to apply AI/ML techniques to end products and engineering workflows. You will work closely with cross-functional teams, including software development, system design, hardware design, and RF design, to integrate, test, characterize, certify, and commercialize 6G/5G modem products for global markets.
You will directly impact the quality, performance, and commercialization of global modem products, enabling cutting-edge wireless experiences across mobile devices and networks. The ideal candidate is curious about emerging technologies, eager to learn, and comfortable working in a collaborative technical environment. Strong communication and interpersonal skills are essential, along with a proactive, hands-on approach to testing and lab-based work.
Key Responsibilities:
You will support verification and performance evaluation for complex digital modem products across 6G and 5G cellular technologiesin carrier lab mainly, infra vendor lab, field and with test equipment like protocol simulator. Core responsibilities include:
- Validate end-to-end system functionality and performance across the cellular protocol stack (PHY, MAC/RLC/PDCP, RRC, NAS, TCP/IP).
- Define modem key performance indicators and evaluate system performance, optimizing based on data from conducted, radiated, and live 6G/5G network testing.
- Develop and execute system-level test strategies, methodologies, and test plans for modem features and use cases.
- Analyze 3GPP specifications and carrier requirements, translating them into robust validation scenarios and test coverage.
- Perform log analysis, debugging, and root cause investigation of modem issues across lab and field environments.
- Support feature integration, certification, and commercialization of global wireless products.
Minimum Qualifications:
3+ years System Test Engineering experience in 5G/4G mobile communications system, protocols, or related work experience.
Preferred Qualifications:
- Strong understanding of digital and wireless communication systems, signal processing, and RF propagation.
- Strong understanding of physical layer procedures such as signal detection, channel estimation, link adaptation, mmWave beam refinement, and massive MIMO.
- Knowledge of 5G NR PHY, MAC, RLC, PDCP, and RRC protocols.
- Knowledge of OFDMA, Wi-Fi, and LTE.
- Knowledge of air interface performance analysis, characterization, and optimization.
- Experience with test equipment such as protocol simulator call boxes and channel emulators for wireless product verification.
- Programming skills in Python, Perland MATLAB.
- Knowledge of AI/ML concepts and their application to digital communications is a plus.
- Proficient communication and reporting skills
- Speaking Japanese and English is required at operator lab
Minimum Qualifications:
• Bachelor's degree in Engineering, Information Systems, Computer Science, or related field.Applicants: Qualcomm is an equal opportunity employer. If you are an individual with a disability and need an accommodation during the application/hiring process, rest assured that Qualcomm is committed to providing an accessible process. You may e-mail [email protected] or call Qualcomm's toll-free number found here. Upon request, Qualcomm will provide reasonable accommodations to support individuals with disabilities to be able participate in the hiring process. Qualcomm is also committed to making our workplace accessible for individuals with disabilities. (Keep in mind that this email address is used to provide reasonable accommodations for individuals with disabilities. We will not respond here to requests for updates on applications or resume inquiries).
Qualcomm expects its employees to abide by all applicable policies and procedures, including but not limited to security and other requirements regarding protection of Company confidential information and other confidential and/or proprietary information, to the extent those requirements are permissible under applicable law.
To all Staffing and Recruiting Agencies:Our Careers Site is only for individuals seeking a job at Qualcomm. Staffing and recruiting agencies and individuals being represented by an agency are not authorized to use this site or to submit profiles, applications or resumes, and any such submissions will be considered unsolicited. Qualcomm does not accept unsolicited resumes or applications from agencies. Please do not forward resumes to our jobs alias, Qualcomm employees or any other company location. Qualcomm is not responsible for any fees related to unsolicited resumes/applications.
If you would like more information about this role, please contact Qualcomm Careers.