The Modem Systems Test Engineer will join the Wireless Technologies and Eco-Systems team to validate multi-radio platforms and ensure seamless operation between cellular technologies and adjacent radios. This role focuses on addressing complex cross-radio interference and protocol arbitration challenges. The engineer will work with various teams to guarantee robust performance under interference conditions. A strong background in cellular protocols and RF fundamentals is essential for success in this position.

• Bachelor's or Master's degree in Electrical Engineering, Computer Engineering, Telecommunications, or a related field.
• Deep technical understanding of 3GPP LTE and 5G NR across Layer 1, Layer 2, and Layer 3.
• Strong grasp of RF transceiver architectures and multi-radio interference mitigation techniques.
• Proven track record of system test, integration, or validation using commercial wireless network emulators and RF instrumentation.
• Strong proficiency in Python for test automation and data analysis.

• Conduct end-to-end system testing and performance characterization of cellular baseband and multi-radio coexistence features.
• Analyze deep traces and perform lab simulations to identify performance degradation and desense mechanisms.
• Collaborate cross-functionally with system architecture, firmware, and RF design teams.
• Drive test coverage and root-cause complex issues affecting system performance.
• Utilize data analysis and visualization libraries to create large-scale test KPI dashboards.

• Employees at Apple are often offered comprehensive benefits that support physical and mental well-being—flexible medical plans, confidential counseling, onsite wellness centers at major campuses, and resources for fitness and daily life. Families typically receive fertility support, paid parental leave with gradual return, caregiving leave, and dependent-care guidance, while financial perks commonly include stock grants (with purchase discounts), 401(k) matching, and income-protection coverage. Employees also see robust time off, Apple University learning and tuition reimbursement, donation matching and paid volunteer hours, and deep product and partner discounts.