Modem System Test Engineer
Apple's Cellular Software team is seeking passionate, innovative, and disciplined engineers to revolutionize the way people stay connected. In this role, you will work across the full protocol stack from Phy to NAS/AS, RF, eSIM, Multi Radio coexistence and iOS interfaces, to develop and optimize groundbreaking cellular technologies for iPhone, iPad, Apple Watch, and other wireless products." Our team is driven by a relentless commitment to pushing the boundaries of what's possible, not just improving software design but reimagining the cellular ecosystem itself. You will collaborate closely with architecture, firmware, carrier engineering, and system test teams, with your work directly impacting millions of users worldwide. If you are excited to innovate at the intersection of wireless systems and intelligent automation, we invite you to join us in transforming the future of connectivity.
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Description
As a Wireless Modem System Test Engineer, you will play a critical hands-on role in ensuring the highest quality and performance of cutting-edge cellular modem technologies. You will work closely with platform architecture, firmware/protocol development, standardization, system test, and carrier engineering teams to diagnose, analyze, and optimize modem performance across LTE, 5G NR, and IoT systems. Your work will span all layers of the protocol stack from PHY and RF to NAS, AS, IP, and TCP/UDP, giving you exposure to the full modem lifecycle, including baseband and protocol optimization. You will be responsible for defining, developing, and automating comprehensive test cases using industry-leading platforms, while leveraging your expertise in Python, AI/ML, and advanced debugging tools to solve complex technical challenges.
Preferred Qualifications
Proficiency in diagnosing complex system-level issues through lab/field experimentation, analytics, and log analysis.
Excellent analytical & critical thinking skills,
Excellent communication & interpersonal skills.
Minimum Qualifications
Bachelor's or Master's degree in Computer Science, Electrical Engineering, Telecommunications, or a related field
With solid experience in wireless system testing, firmware validation, cellular certification, and IoT/cellular performance evaluation.
Proven experience testing advanced modem features such as carrier aggregation, VoLTE/VoNR, MIMO, mobility procedures, ENDC CA, NRDC, FR1, and FR2, using industry-standard platforms (e.g., Keysight, Anritsu, R&S, Spirent).
Hands-on expertise in AI/ML concepts and their application to test optimization and large dataset analysis, using tools such as Pandas, TensorFlow, and PyTorch for data processing and visualization.
Advanced skills in debugging and root cause analysis using various logging tools; demonstrated ability to troubleshoot modem issues across all protocol layers"
Apple is an equal opportunity employer that is committed to inclusion and diversity. We seek to promote equal opportunity for all applicants without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability, Veteran status, or other legally protected characteristics. Learn more about your EEO rights as an applicant .
Perks and Benefits
Health and Wellness
Parental Benefits
Work Flexibility
Office Life and Perks
Vacation and Time Off
Financial and Retirement
Professional Development
Diversity and Inclusion
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