Senior Cellular Layer-1 Control Software Development Engineer, Wireless Technologies & Ecosystems

Sunnyvale Until 9/21/2026 10+ years exp First posted July 23, 2026 Last posted July 23, 2026
Job description

Join our Wireless Technologies and Ecosystems (WTE) team and drive innovation that matters! We build and seamlessly integrate technologies that enrich people’s lives and deliver the best user-experience. We're a passionate and critical team that designs, develops and integrates software for cellular chipsets in Apple products. You will join a hands-on development team that nurtures creativity and generates novel solutions to deliver engineering perfection. Do you have a passion for invention and self-challenge? Do you thrive on pushing the limits of what’s considered feasible. As part of a world class cellular team, you’ll craft sophisticated groundbreaking embedded software that deliver more performance in our products than ever before. Join us, and you’ll help us innovate new cellular technologies that continually outperform the previous iterations! By collaborating with other product development groups across Apple, you’ll push the industry boundaries, redefine what wireless systems can do and improve the product experience for our customers across the world.

Description

Apple’s Cellular Software team is seeking talented, highly motivated and disciplined engineers to work across layers on groundbreaking cellular technologies. The position involves identifying and/or developing core cellular technologies that solves everyday problems for customers using iPhone, iPad, Watch and other wireless product lines. We are passionate about keeping our users connected 24/7 wherever they go. This team takes pride in not just coming up with proven software designs but also in disrupting traditional models of the cellular ecosystem. We do whatever it takes to bring user experience to the next level.

Minimum Qualifications

Bachelors and/or Masters degree in Computer Science, Computer Engineering, Electrical Engineering, or related field.
10-15+ years of relevant industry experience.
In-depth hands-on experience with real-time embedded cellular 4G/5G/6G PHY L1.
Strong understanding of software engineering principles using C and/or C++, Real Time Operating Systems (RTOS) and concurrent programming.

Preferred Qualifications

Deep understanding of cellular uplink procedure - RACH, Scheduling Request, SRS, CSI, Antenna selection algorithms.
Working knowledge of computer architecture with particular emphasis on the HW/SW interfaces of high-speed communication subsystems.
Experience with silicon prototyping, emulation systems, and virtual platforms.
Experience in SW verification and HW validation utilizing scripting and/or automation frameworks with strong experience debugging embedded software systems using system simulators, spectrum analyzers, oscilloscopes, JTAG debuggers.

About this role

Summary

Develop and optimize embedded cellular PHY Layer-1 control software for wireless products.

Job title

Senior Cellular Layer-1 Control Software Development Engineer, Wireless Technologies & Ecosystems

Experience level

10-15+ years

Minimum experience

10+ years exp

Industry

software

Location requirements

Sunnyvale, no remote work allowed

Salary

Not specified

Management role

No

Skills & keywords

Required skills

CC++Real Time Operating Systemsconcurrent programming

Preferred skills

cellular uplink procedureshardware/software interfacessilicon prototypingautomation and scriptingHW validation

Specializations

cellular technologiesembedded softwarereal-time systemswireless protocols
Locations

Structured locations inferred from the posting.

Sunnyvale, CA, USA

On-site City