Linux Device Driver Developer - Embedded System

We are looking for an experienced Linux Device Driver Developer with strong expertise in UCIe (Universal Chiplet Interconnect Express), Linux Kernel Driver Development, Embedded Linux, and C programming.

The ideal candidate will be responsible for UCIe bring-up, Linux driver development, pre-silicon validation, and debugging of next-generation chiplet-based interconnects across Synopsys VDK and silicon platforms.

Key Responsibilities :

• Bring up UCIe (Universal Chiplet Interconnect Express) links on Synopsys VDK pre-silicon platforms.

• Develop low-level UCIe initialization flows, including PHY bring-up, link training, lane bonding, and reliability feature enablement.

• Design, develop, and maintain Linux kernel drivers for UCIe endpoints and hosts, including device discovery, enumeration, and resource mapping.

• Integrate UCIe with PCIe, CXL-over-UCIe, and custom chiplet interconnect fabrics.

• Debug complex UCIe link issues across VDK, FPGA, and silicon, including:

• CRC and retry errors

• Lane deskew and link training failures

• Throughput and QoS degradation

• Chiplet interoperability issues

• Characterize chiplet performance by analyzing latency, bandwidth, coherency behavior, and power consumption.

• Develop internal diagnostics, monitoring tools, and stress frameworks for UCIe validation and performance analysis.

• Collaborate closely with architecture, PHY, packaging, firmware, and multi-die integration teams to ensure successful system bring-up.

Required Skills & Experience:

• 5 to 7 years of experience in Linux Kernel Device Driver Development and Embedded Linux.

• 5+ years of experience working with high-speed interconnects such as UCIe, PCIe, CXL, SerDes, or similar technologies.

• Hands-on experience with Synopsys VDK/Virtualizer for pre-silicon interconnect bring-up and validation.

• Strong proficiency in C programming and Linux kernel debugging using tools such as ftrace, perf, kgdb, and crash analysis.

• Solid understanding of UCIe architecture, chiplet-based systems, and die-to-die communication.

• Experience with PHY bring-up, SerDes tuning, link training, lane management, and reliability mechanisms.

• Strong understanding of multi-die/chiplet architectures, coherency protocols, memory-mapped interconnects, and die-to-die communication protocols.

• Experience debugging complex hardware-software interactions in pre-silicon and post-silicon environments.

Preferred Skills :

• Direct experience implementing or validating the UCIe specification.

• Experience with advanced semiconductor packaging technologies, including 2.5D and 3D packaging.

• Knowledge of PCIe and CXL protocol stacks.

• Experience contributing to upstream Linux kernel development.

• Strong analytical, debugging, and problem-solving skills.

• Excellent communication and cross-functional collaboration skills.