Software Engineer - Systems

APPLE INC has the following available in Cupertino, California and various unanticipated locations throughout the USA. Ensure high performance of Wi-Fi, Bluetooth and Thread when used simultaneously by Apple’s devices. Coordinate with vendors about issues with Wi-Fi or Bluetooth performance and evaluate the impact of new wireless features.Software development for WIFI host software Deamons using objectiv-C language. Working on software projects that control Wi-Fi policy for coexistence cases, configuring transmit power, modes of operation, Wi-Fi roaming, and other wireless configurations. Knowledge of the objective-C programming language, the full Wi-Fi software stack, and experience with debugging crashes in Deamons and reducing memory footprints. Knowledge of RF schematics for considering different RF module designs and their tradeoffs. Knowledge of different wireless concepts such as transmit-beam forming, maximal-ratio-combining, as well as the effects of USB defense on antennas. Fulfill duties related to the full device shipment process from concept review to final customer release. Knowledge of all aspects of device delivery, from FW stability to regulatory certification. 40 hours/week. At Apple, base pay is one part of our total compensation package and is determined within a range. This provides the opportunity to progress as you grow and develop within a role. The base pay range for this role is between $181,100 - $272,100/yr and your base pay will depend on your skills, qualifications, experience, and location.

PAY & BENEFITS: Apple employees also have the opportunity to become an Apple shareholder through participation in Apple’s discretionary employee stock programs. Apple employees are eligible for discretionary restricted stock unit awards, and can purchase Apple stock at a discount if voluntarily participating in Apple’s Employee Stock Purchase Plan. You’ll also receive benefits including: Comprehensive medical and dental coverage, retirement benefits, a range of discounted products and free services, and for formal education related to advancing your career at Apple, reimbursement for certain educational expenses — including tuition. Additionally, this role might be eligible for discretionary bonuses or commission payments as well as relocation. Learn more about Apple Benefits: https://www.apple.com/careers/us/benefits.html.
Note: Apple benefit, compensation and employee stock programs are subject to eligibility requirements and other terms of the applicable plan or program.

Bachelor’s Degree or foreign equivalent in Computer Science, Electrical Engineering, or related field and 2 years of experience in the job offered or related occupation.

2 years of experience with each of the following skills is required:

Using WiFi protocol at MAC and PHY layers to analyze WiFi connectivity issues and improve SW quality, including basic operations including scan, join , roaming, and various security modes to advanced WiFi protocols including 11ac/ax/be
Utilizing critical PHY/MAC elements that impact WiFi connectivity and performance to analyze and improve WiFi SW quality, including EAPOL exchange, MCS rate, or AMPDU aggregation.
Understanding UDP/TCP protocol and cross-layer interaction with WiFi SW stack, to profile and investigate end-to-end performance issues
Using BT protocol and operations, co-existence and interaction with WiFi radio operation, and various optimization techniques to strike the right balance between BT and WiFi performance and usability
Applying embedded OS fundamentals and using C/C++ to work on embedded software that involves Object-Oriented design, multi-threading implementation, and consideration of optimizing memory/CPU overhead
Working on interface design, co-development, and system integration of WiFi driver SW with chip FW
Applying understanding RF antenna design, reading schematic of RF front end and analysis of intrinsic impact to WiFi/BT co-existence at runtime
Analyzing and driving system level investigation related to radio co-existence

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