Rebellions’ HW Platform part is seeking a talented and meticulous High Speed IO Validation Engineer to ensure the functional integrity, performance, and compliance of all critical high-speed interfaces within our next-generation AI Chip Ecosystem. This role is essential for delivering ultra-low latency and ultra-high bandwidth systems for our AI Accelerators and Data Center solutions, focusing on comprehensive system-level IO validation and robust system performance.

Responsibilities and Opportunities

• Bring-up and Characterization: Lead the bring-up, electrical characterization, and functional validation of various high-speed interfaces, including SerDes PHYs (PCIe, CXL, Ethernet), High Bandwidth Memory (HBM3E/DDR), and high-speed clocking networks.
• Compliance and Interoperability: Conduct thorough compliance and interoperability testing for key industry-standard interfaces to ensure strict adherence to electrical specifications and protocol requirements.
• Measurement and Analysis: Perform detailed lab measurements utilizing specialized test equipment (Oscilloscopes, BERTs, VNAs) for jitter analysis, eye diagram analysis, link margin characterization, and system-level margin analysis.
• Debugging and Root Cause Analysis: Collaborate cross-functionally with ASIC, SI, and Firmware teams to effectively debug complex IO issues, identify the root cause of performance degradation (e.g., link training failures, marginal timing, BER issues), and drive resolutions.
• Documentation: Create detailed test plans, validation reports, and technical documentation summarizing test results, compliance status, and observed failures.

Key Qualifications

• BS/MS in Electrical Engineering or equivalent practical experience.
• 5+ years of hands-on experience in high-speed IO validation, electrical characterization, and system debug, specifically focused on interfaces operating at multi-Gbps speeds (e.g., 100 Gbps/lane SerDes, HBM/DDR interfaces), including SerDes PHY performance validation such as TX equalization tuning, receiver adaptation, and eye/jitter margin optimization.
• Expert proficiency in setting up, operating, and automating high-speed test equipment:
• Real-time/Sampling Oscilloscopes (for Eye and Jitter analysis)
• Vector Network Analyzers (VNA) / Time Domain Reflectometers (TDR)
• Interface Knowledge: Strong working knowledge of physical layer architecture, equalization techniques (CTLE, DFE, FFE), and the operation of high-speed protocols (PCIe, CXL, Ethernet).
• Low-Level Firmware & Hardware Interface: Understanding of firmware/driver architecture and their interaction with hardware systems

Rebellions is committed to fostering a diverse and inclusive workplace. We are an equal opportunity employer and value diversity within our company. We do not discriminate based on personal identity. Applicants who would like to contact us regarding the accessibility of our website or who need special assistance or a reasonable accommodation for any part of the application or hiring process may contact us at: recruit@rebellions.ai.