Apple · 2 months ago
Wireless Systems Engineer, Cross-Layer Design
Sunnyvale, California, United States
Full-time
Onsite
Mid, Senior Level
$147K/yr - $272K/yr
5+ years expApple is a company that crafts products to enrich people’s lives. They are seeking a forward-thinking Wireless Systems Engineer to work on innovative solutions for wireless SoCs, focusing on PHY/MAC cross-layer design to enhance system performance in challenging environments.
AppsArtificial Intelligence (AI)BroadcastingDigital EntertainmentFoundational AIMedia and EntertainmentMobile DevicesOperating SystemsTVWearables
Responsibilities
Implement system models and investigate innovative algorithms in PHY/MAC cross-layer to mitigate the impact of dynamically changing and congested radio environments, and achieve robust performance
Discuss with product teams and come up with novel algorithms and procedures to satisfy the requirements of emerging applications in real life conditions with congested radio environments
Perform simulations to prove the efficiency of the designed algorithms, and validate them on emulation platforms
Work closely with SW engineers, HW digital designers, Product teams and architects to understand domain requirements and constraints, and align on the best solutions
Bring up, test and characterize the crafted algorithms on real silicon in lab, evaluate and assure interoperability performance with other APs and STAs
Come up with enhanced solutions based on the behavior and performance analysis of real silicon systems in practical setups or environments
Qualification
Required
BS and a minimum of 3 years relevant industry experience
Strong individual technical contributor capacity that with at least 5 years experience in designing PHY/MAC cross-layer algorithms, signal processing, and wireless communication systems
Deep understanding of communication theory, information theory, and signal processing related algorithm design
Experience with system optimization in congested and dynamically changing radio environments through cross-layer designs with proven understanding of PHY systems and MAC protocols
Experience designing and developing the physical layer core algorithms for wireless communication systems such as MIMO / OFDM signal estimation and detection, channel estimation, equalization, coding theory, beam forming, timing recovery, frequency synchronization, automatic gain control
Experience implementing system models in MATLAB, Python and/or C/C++ for algorithm development, modeling, and simulation
Knowledge of existing wireless communication protocols: 802.11a/b/g/n/ac/ax/be, 802.11ad/ay, 5G/LTE/WCDMA/GSM, and/or Bluetooth/BLE
Preferred
MSEE or PhD with a few years proven experience
Able to efficiently use lab equipments such as spectrum analyzer, signal generator, network traffic analyzer
Experience with ns-3, emulation systems, and virtual platforms
Knowledge of modem architecture
Hands-on experience with bringing up silicon, testing, debug and characterization in the lab over variations of setups from basic single link performance to practical setups with other devices and interference
Good written and verbal communication skills
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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Trends of Total Sponsorships
2025 (6998)
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2023 (3939)
2022 (4822)
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2020 (3656)
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
Recent News
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2025-12-01
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2025-09-25
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