Senior Firmware Engineer

Senior Firmware EngineerLocation: Rancho Cordova, CA Role Type: Full timeThe successful candidate's starting base pay will be determined based on job-related skills, experience, qualifications, work location and market conditions. The expected base pay range for this role may be modified based on market conditions. Highly competitive salaries differentiated by performance.Job ResponsibilitiesProtocol Stack Design and MaintenanceDesign 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.Command Processing and Flow ControlImplement 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.Error Reporting and RecoveryImplement 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.Compliance and InteroperabilityVerify compatibility with industry-standard NVMe compliance tools and host platforms. Validate SMBus and I3C communication against JEDEC/MIPI specifications to ensure broad interoperability with different host systems and controllers. Debug and Validation 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 RequirementsMaster's degree in Electrical Engineering, Computer Engineering, Computer Science, or related fields.At least 3 years work experience in each of the following:Software/firmware applications engineering Experience in SSD controller/firmware architecture Strong experience in C/C++ programming and data structure Hands on experience with JTAG/ICE debuggers Experience with version control software like Git. Competent to work independently as well as in a small team collaboration environment. Must be willing 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 QualificationsThe ability to operate logic analyzer, oscilloscope and bus protocol analyzer is valuable. Familiar with SATA/PCIe (NVMe) protocols Familiar with NAND flash protocols Linux system debug experience. Fluent in reading and writing Mandarin preferred. Annual merit increases Benefits: Year-end bonus RSU for eligible employees Invention and Patent Awards 401(k) Employer Matching Length of Service Awards We offer comprehensive health insurance plans for eligible employees and dependents. There are plans to meet the needs of you and your family.About Us: InterSources IncInterSources Inc, a Certified Diverse Supplier, was founded in 2007 and offers innovative solutions to help clients with Digital Transformations across various domains and industries. Our history spans over 16 years and today we are an Award-Winning Global Software Consultancy solving complex problems with technology. We recognize that our employees and our clients are our strengths as the diverse talents and opportunities they bring to the table enable us to grow as a global platform and they are causally linked with our success. We provide strategic and technical advice, and we have expertise in areas covering Artificial Intelligence, Cloud Migration, Custom Software Development, Data Analytics Infrastructure & Cloud Solutions, Cyber Security Services, etc. We make reasonable accommodations for clients and employees and we do not discriminate based on any protected attribute including race, religion, color, national origin, gender sexual orientation, gender identity, age, or marital status. We also are a Google Cloud partner company. We align strategy with execution and provide secure service solutions by developing and using the latest technologies that thrive our resources to deliver industry-leading capabilities to our clients and customers, making it convenient for our clients to do business with InterSources Inc. Our teams also drive growth by refining technology-driven client experiences that put the users first, providing an unparalleled experience. This results in strengthening the core technologies of clients, enabling them to scale with flexibility, create seamless digital experiences and build lifelong relationships.