Senior Firmware Engineer ( Full-time ) Rancho Cordova, CA - DK

Job Responsibilities Design and maintain the NVMe protocol stack, including Admin and I/O command processing, and Submission/Completion Queue management. Ensure full compliance with the latest NVMe specifications and PCIe Gen5 protocol requirements. Design and implement SMBus and I3C communication protocols, ensuring reliable and accurate data exchange with the host controller. Implement NVMe command parsing, data transfer mechanisms, and completion flows, supporting multi‑namespace operations. Implement SMBus/I3C read/write commands and data flow, including status monitoring, temperature/voltage reporting, and control command handling. Implement proper status code reporting, Asynchronous Event Notification (AEN), and error recovery flows to ensure host compatibility. Handle timeout, abort, and reset scenarios to maintain system stability and minimize host impact. Design SMBus/I3C error detection and retry mechanisms to prevent transmission errors from causing system failures. Verify compatibility with industry‑standard NVMe compliance tools and host platforms. Validate SMBus and I3C communication against JEDEC/MIPI specifications to ensure broad interoperability. Capture and analyze PCIe/NVMe transactions using protocol analyzers, logic analyzers, and firmware logs. Monitor SMBus/I3C transfers, analyze timing and error conditions, and ensure firmware implementation is stable and reliable. Collaborate with validation teams to execute compliance, stress, and corner‑case tests, including hot‑plug, power management, error injection, and multi‑protocol concurrency tests. Provide root‑cause analysis and implement fixes for protocol‑related issues found during validation or in customer systems. Minimum Requirements Master’s degree in Electrical Engineering, Computer Engineering, Computer Science, or related fields. At least 3 years experience in software/firmware applications engineering. Experience in SSD controller/firmware architecture. Strong experience in C/C++ programming and data structures. Hands‑on experience with JTAG/ICE debuggers. Experience with version control software like Git. Competence to work independently as well as in a small team collaboration environment. Willingness to learn fast and execute as a team player. Good oral, written and presentation skills for communication and documentation. Ability to work independently with a minimum of day‑to‑day supervision. Preferred Qualifications Ability to operate logic analyzer, oscilloscope and bus protocol analyzer. Familiarity with SATA/PCIe (NVMe) protocols. Familiarity with NAND flash protocols. Linux system debugging experience. Fluent in reading and writing Mandarin. Benefits Annual merit increases. Year‑end bonus. RSU for eligible employees. Invention and Patent Awards. 401(k) Employer Matching. Length of Service Awards. Comprehensive health insurance plans for eligible employees and dependents. Additional Information Security Clearance Required: No. Visa Candidate Considered: No. Compensation Base Salary - USD $150,000 to $210,000. #J-18808-Ljbffr Central Business Solutions, Inc