Principal Systems Software Engineer

Skip to main content. sitemap Profile Sign Out View More Jobs Principal Systems Software Engineer United StatesSeattle, WA, United States Job Identification 340422 Job Category Product and Research Posting Date 07/21/2026, 07:30 AM Role Individual Contributor Job Type Regular Employee Does this position require a security clearance? No Years 6 to 10+ years Applicants are required to read, write, and speak the following languages English Job Description Owns complex system modules and fleet automation workflows; defines integration contracts across software, firmware, and hardware. Leads deep-dive investigations for incidents and hard faults; creates durable fixes and preventive controls. Designs performance, reliability, and fault-tolerance improvements for drivers, services, and provisioning pipelines at scale. Elevates code quality via reviews, patterns, and tooling; sets standards for observability, security, and compliance. Guides platform bring-up and diagnostics; collaborates with silicon, board, and firmware partners to validate end-to-end behavior. Designs and implements firmware components integrating diverse interfaces and protocols; diagnoses cross-domain issues (firmware/hardware/OS/ bootloaders) with logic analyzers, JTAG, and emulators; participates in schematic/board reviews; leads initial board/device bring-up; develops and debugs advanced features (e.g., RAS, high-speed I/O, chipset/SoC services) across ARM, AMD, Intel, and custom ASIC/FPGA platforms. Responsibilities Key ResponsibilitiesSystems Software Development:Design, develop, and maintain complex system software modules for managing, monitoring, and provisioning computer servers, storage, networking, and GPU subsystems in hyperscale environment.Utilizes advanced knowledge to design, develop, and deploy software layers and tooling to automate hardware provisioning and onboarding of servers to large-scale fleet.Play a significant role in platform bring-up, firmware updates, platform-level diagnostics, and complex cross-layer debugging.Diagnose and resolve complex issues across software, firmware, and hardware layers, working in DevOps and incident response paradigms to maintain reliability and availability.Software Development and Coding:Designs software solutions and analyzes and identifies requirements to achieve business and operational goals, sharing results with manager upon completion.Adheres to and improves execution of all phases of the software development lifecycle; provides guidance and coaching to engineers to drive improvements.Utilizes advanced knowledge to develop and guide new software features and enhancements leading design specifications, ensuring accessibility, and develops documents to clarify software design and code.Leads code reviews in multiple areas to help drive improvements.Conducts debugging and troubleshooting to identify and fix complex software issues.Develops fixes for identified issues.Implements comprehensive software testing (e.g., functional and non-functional testing), quality assurance processes, software error logging, monitoring, and observability for effective debugging, sharing work with manager and/or lead upon completion.Conducts performance profiling and optimization of coding, building scalable solutions, and anticipating and resolving potential outcomes.Troubleshoots and resolves complex issues related to application programming interface (API) functionality and integration. Implements complex API versioning, lifecycle, and...