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We're looking for a Cellular Modem Systems Engineer to join our cellular systems engineering team as we define and build the next generation of cellular technology. This is a rare opportunity to shape the future of wireless communication at a company that ships at global scale as we transition towards 6G. In this role, you'll bring an end-to-end view of wireless systems — spanning 3GPP standards, feature definition and planning, design, hardware and software architecture and partitioning — to deliver leading-edge performance and power optimizations and features that directly improve the user experience across Apple products.
If you thrive at the intersection of deep technical theory and hands-on bring-up — and you're excited about pushing beyond 5G into the 6G era — we want to hear from you.
As a Cellular Systems Engineer, you will own the end-to-end lifecycle of cellular modem systems — from feature set and capability definition that improve cellular user experience of our products to concept work, algorithm design through silicon bring-up and productization. In this role you are expected to Collaborate cross-functionally with eco-system teams, SoC, PHY, PHY HW, PHY FW, and L1 SW teams to ensure end-to-end system requirements are met across the full stack.
Define & architect system-level features and requirements for next-generation cellular modems, with a focus on 6G evolution and advanced PHY/L1 capabilities.
Own the E2E system view — connect 3GPP standard requirements, algorithm design trade-offs, HW/FW architecture constraints, and product-level targets into cohesive, leading-edge solutions.
Design algorithms for the physical layer, across layers and L1/RF control to optimize performance/power.
Model & simulate algorithms in floating-point and fixed-point using MATLAB, C/C++, and/or Python, and validate, through link-level simulation or correlating with data collected from field and real deployments.
Optimize for user experience by driving performance and power efficiency improvements across the wireless stack — translating system-level insights into tangible gains in throughput, latency, battery life, and connectivity reliability based on real world deployments
BS in Electrical Engineering, Computer Engineering, or a related field, with 10+ years of relevant industry experience.
Strong knowledge of cellular communication standards and associated feature sets: 6G (emerging), 5G NR, 4G LTE — particularly RAN1 3GPP.
Proficiency in MATLAB, C/C++, and/or Python for algorithm development, fixed/floating-point modeling, and link-level simulation.
Experience leveraging Generative AI and LLM-based tools to accelerate engineering workflows — e.g., algorithm prototyping, code generation, simulation analysis, or technical documentation
Experience in Layer-1/2 control design of cellular systems.
Experience in low-power algorithm design for power-constrained mobile platforms.
Experience in end-to-end timeline analysis for latency-critical PHY processing chains.
Strong mathematical foundations: linear algebra, stochastic processes, detection & estimation theory.
Familiarity with 3GPP standardization processes, RAN2, RAN4 topics and emerging 6G study items (e.g., AI/ML for air interface, joint communication and sensing, reconfigurable intelligent surfaces).
Track record of published research or patents in wireless communications is a plus.
Job description provided by Apple.
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