Platform Firmware Engineer

The Core Technology Platform Firmware team builds the foundation that every product depends on - the first code that runs the security model that protects it and the boot architecture that brings it to life. You will work at the intersection of silicon and software solving problems that dont have documented answers yet and shaping the firmware that defines how our products start secure themselves and perform. This is work where your decisions are etched into silicon and your craftsmanship ships to will contribute to boot architectures security models and hardware/software interfaces for new products then bring them to life in the lab on first silicon and prototype hardware. You are the technical anchor for the platforms firmware deliverables - driving the system from first power-on through production hardening and into mass manufacturing. You will partner closely with hardware silicon vendors and security teams throughout the product are looking for a resilient self-driven engineer to own platform firmware deliverables from initial concept through mass production. You will work interchangeably with Apple Silicon and third-party vendor silicon depending on project requirements. This is a team that holds a high bar and has each others backs - we anticipate risks before they become crises we own the outcomes of our decisions and we make each other better through honest constructive feedback. When things go wrong we learn from it and share what we learned to take the group forward.

Genuine passion for innovation and product development with experience from inception through delivery to customers. The Firmware Engineer will be individually responsible for all things firmware related. Architect design develop and maintain hardware/software systems for Apple products. The individual will also be responsible for shaping firmware features from definition to launch with cross-functional teams in a highly dynamic environment.

Define the boot flow security model and hardware/software interfaces for new products including the full chain from ROM through early boot stages to handoff to higher-level first-light bring-up efforts on new boards and silicon - validating hardware functionality isolating board-level issues alongside hardware engineers and systematically working through errata and incomplete and ship ROM code with the defensive architecture and exhaustive review that immutable code and implement Secure Boot sequences Root of Trust establishment and authenticated firmware the platform for power boot time and reliability through the entire development as the primary firmware point of contact for hardware silicon and security teams representing firmware architecture in design reviews and driving resolution of cross-domain manage deliverables with frequent structured updates to engineering leads and cross-functional partners - surfacing risks early and communicating timelines complex build environments spanning multiple repositories SDKs and vendor-provided toolchains to maintain a coherent firmware to travel domestic and international (10%)

BS in Computer Engineering Electrical Engineering or equivalent professional experiencen3 years of experience in low-level firmware ROM development or silicon-level bring-upnProficiency in C and Assembly for resource-constrained environments (limited SRAM no heap no standard library)nHands-on experience with ARM architectures (ARMv7/ARMv8 A/R/M profiles) at the register level including exception models MMU/MPU configuration and cache coherencynExperience with early boot and Secure Boot implementation - reset vector handlers clock and memory controller initialization chain of trust establishmentnExperience bringing up new board designs - validating power sequencing clock trees and peripheral connectivity on prototype hardwarenProficiency with hardware debugging tools including JTAG SWD logic analyzers and protocol decodersnShipped at least one product through a complete development lifecycle from silicon bring-up through mass production

MS in Computer Engineering or Electrical EngineeringnExperience shipping multiple products through complete development lifecycles (EVT DVT PVT and into mass production) with an understanding of how priorities risks and tradeoffs shift at each experience developing and shipping ROM code in a production with power state transitions and low-power firmware working directly with silicon teams on errata investigation and workaround record of proactively identifying and mitigating technical risks ahead of reconciling cross-repo dependencies and maintaining firmware deliverables composed of components from multiple teams and vendors.