Apple · 7 hours ago
Cellular Systems Engineer - System-Level Simulations
San Francisco, CA
Full-time
Onsite
Mid, Senior Level
$140K/yr - $258K/yr
3+ years expApple is a company known for its innovative products and services, and they are seeking a dedicated Cellular Systems Engineer to join their system engineering team. In this role, you will design and develop cellular system-level simulation models and infrastructure for future 5G and 6G modem products, collaborating closely with multi-functional teams to ensure feature verification and successful implementation.
AppsArtificial Intelligence (AI)BroadcastingDigital EntertainmentFoundational AIMedia and EntertainmentMobile DevicesOperating SystemsTVWearables
Responsibilities
Define and implement cellular 5G and 6G system-level models for PHY, MAC, RLC, PDCP, SDAP and RRC layers
Design state-of-the art channel models for system-level applications including FR3 and ray-tracing channel models
Design system-level test cases for feature verification, drive feature bring-up and issue resolution
Design and implement innovative algorithms during the 3GPP standardization process (RAN1, RAN2, RAN4) for next generation cellular communication systems
Perform simulation studies on system- and network level to assess the impact of new features and algorithms including end-to-end (PHY to Application), coexistence with WiFi/BT and cross-layer optimizations
Contribute to simulation framework related topics, such as regression testing infrastructure, test coverage analysis, automation scripting, tool and library integration
Closely collaborate with multi-functional customers on requirements, architecture, project plans and feature bring-up
Develop and integrate AI/ML based modem algorithms, including design, training, integration and performance evaluation of AI-driven algorithms, while leveraging GenAI tools to enhance development efficiency and accelerate innovation cycles
Qualification
Required
BS and a minimum of 3 years relevant industry experience
Deep knowledge of communication system theory as well as Layer 1, 2 and 3 signal and protocol processing
In-depth knowledge of wireless communication systems with hands-on experience in 4G/5G PHY design, channel models, pre-silicon verification and critical metric testing
Experience with Matlab, C/C++ and/or Python including significant knowledge of algorithms and data structures, memory and runtime profiling as well as code optimization techniques
Solid knowledge of current cellular communication standards: 5G (NR) and 4G (LTE)
Strong analytical and problem-solving skills (linear algebra, random processes, detection and estimation, debugging and fixing of defects)
Preferred
MS in Computer Science or Electrical/Information Engineering with 7+ years of working experience or PhD in relevant field with 3+ years of working experience is preferred
Validated track-record in SW and link/system level simulator design in C/C++, including experience with simulator frameworks and configuration management
Work experience related to RAN1/RAN2/RAN4 standardization submissions is a plus
Experience utilizing AI/ML tools and techniques in wireless communication system design is a strong plus
Benefits
Comprehensive medical and dental coverage
Retirement benefits
A range of discounted products and free services
Reimbursement for certain educational expenses — including tuition
Discretionary bonuses or commission payments
Relocation
Company
Apple
Apple is a technology company that designs, manufactures, and markets consumer electronics, personal computers, and software.
10001+ employees
H1B Sponsorship
Apple has a track record of offering H1B sponsorships. Please note that this does not
guarantee sponsorship for this specific role. Below presents additional info for your
reference. (Data Powered by US Department of Labor)
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Funding
Current Stage
Public CompanyTotal Funding
$5.67BKey Investors
Berkshire HathawayMicrosoftSequoia Capital
2025-05-05Post Ipo Debt· $4.5B
2025-01-16Post Ipo Debt· $0.31M
2021-04-30Post Ipo Equity
Leadership Team
Tim Cook
CEO
Craig Federighi
SVP, Software Engineering
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