Modem System Test Engineer – 6G/5G Air Interface

Technology, Data & Digital · Software & Web Development · Software Engineering · QA & Testing

In short

We are looking for a Modem System Test Engineer to join our team in San Diego. You will validate and test next-generation 5G and 6G modem technologies, ensuring quality and performance for global markets. This role involves close collaboration with cross-functional teams and the application of AI/ML techniques.

Responsibilities

Support verification and performance evaluation for complex digital modem products across 6G and 5G cellular technologies.
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.

Requirements

Bachelor's degree in Electrical Engineering, Computer Engineering, Computer Science, or a related field.
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.
Exposure to 5G infrastructure vendor-specific 5G NR call flows, including Ericsson, Nokia, Huawei, ZTE, and Samsung.
Programming skills in Python and MATLAB.

Desired Qualifications

Knowledge of AI/ML concepts and their application to digital communications is a plus.

Benefits

Competitive annual discretionary bonus program
Opportunity for annual RSU grants
Highly competitive benefits package designed to support your success at work, at home, and at play.
Competitive salary: $112,200.00 - $168,400.00