Cellular Firmware Development Engineer

Role Number: 200650139-3401 Summary Do you have a passion for invention and self-challenge? Do you thrive on pushing the limits of whatu2019s considered feasible? As part of a world class modem team, youu2019ll diagnose sophisticated leading-edge embedded firmware that deliver more performance in our products than ever before. Youu2019ll work across disciplines to transform improved hardware elements into a single, integrated design. Join us, and youu2019ll help us innovate new cellular technologies that continually outperform the previous iterations. By collaborating with other product development groups across Apple, youu2019ll push the industry boundaries of what wireless systems can do and improve the product experience for our customers across the world.Do you want to have an impact on every single Apple product? As a Cellular Firmware Engineer on this team, you will be at the center of the 5G/4G/multimode cellular firmware effort within a silicon design and firmware development group responsible for developing and productizing state-of-the-art cellular SoCs. This position requires someone comfortable with advanced cellular mobile technology and all aspects of cellular embedded software development, that thrives in a dynamic cross-functional organization, is not afraid to challenge what exists openly, and is flexible enough to pivot on constantly evolving requirements. Description You will participate in silicon bring-up, feature bring-up, and triage a multi-mode L1/PHY firmware architecture of a state-of-the-art mobile wireless communication system. You will troubleshoot and debug L1/PHY modem firmware issues utilizing AI and automation technique. You will develop triaging automation. You will optimize L1 and PHY firmware testability and debug capability. You will run data mining, extraction and formatting to monitor firmware health and debug efficiency. Minimum Qualifications + BS and a minimum of 3 years of relevant industry experience is required. + Strong understanding of 5G and 4G 3GPP standards, and competent knowledge on Layer One and Physical Layer control. + Proficiency in embedded programming language such as C and C++. + Proficiency in scripting languages like Python, JavaScript. + Experience with embedded real-time software system bring-up, debug, and test. + Skilled in debugging embedded real-time multi-core, multi-mode software systems with multiple triage techniques. Preferred Qualifications + Advanced degree in electrical engineering, computer science, computer engineering, or data science with 5+ years of relevant experience in wireless communications industry is preferred. + Experience in AI/ML technology and familiar with LLM, RAG, Transformer, Claude and other AI/ML techniques. 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 (.

Created: 2026-03-11