Design Verification Engineer – Coherent Interconnect; CHI

About SiFive As the pioneers who introduced RISC-V to the world, SiFive is transforming the future of compute by bringing the limitless potential of RISC-V to the highest performance and most data-intensive applications in the world. SiFive's unrivaled compute platforms are continuing to enable leading technology companies around the world to innovate, optimize and deliver the most advanced solutions of tomorrow across every market segment of chip design, including artificial intelligence, machine learning, automotive, data center, mobile, and consumer.

With SiFive, the future of RISC-V has no limits. At SiFive, we are always excited to connect with talented individuals, who are just as passionate about driving innovation and changing the world as we are. Our constant innovation and ongoing success is down to our amazing teams of incredibly talented people, who collaborate and support each other to come up with truly groundbreaking ideas and solutions.

Solutions that will have a huge impact on people's lives; making the world a better place, one processor at a time. Are you ready? To learn more about SiFive's phenomenal success and to see why we have won the GSA's prestigious Most Respected Private Company Award (for the fourth time!), check out our website and Glassdoor pages.

In this role, you will own complex verification problems spanning coherent data movement, protocol correctness, ordering, snoop and home-node interactions, credit- and flow-control behavior, and subsystem integration across multiple interface boundaries. This is a horizontal role with broad impact across the coherent interconnect space, requiring strong technical judgment, deep debug ability, and the ability to influence verification strategy beyond an individually assigned block.

This is a Staff Engineer individual-contributor role. SiFive is looking for a Staff Design Verification Engineer to drive verification of a next generation cache-coherent interconnect subsystem with a strong focus on CHI-based architecture and protocol behavior. In this role, you will define verification strategy, identify architectural and verification gaps early, solve difficult protocol and integration problems, and raise the overall quality bar for the broader interconnect verification effort.

• Drive verification of CHI transactions across request, response, snoop, and data paths, including corner cases involving concurrency, hazards, deadlock avoidance, and ordering
• Develop and maintain robust verification environments, protocol checkers, scoreboards, stimulus, and coverage models for coherent traffic, ordering rules, retries, back pressure, flow control, and error handling
• Verify integration behavior across caches, home nodes, request nodes, snoop filters, bridges, and protocol-adaptation paths
• Define high-value directed and constrained-random scenarios that expose corner cases in coherency, credits, buffering, arbitration, and system-level interactions
• Partner closely with architecture, design, formal, and software teams to clarify requirements, close ambiguities early, and accelerate debug and signoff
• Analyze failures efficiently, isolate root cause, and drive durable fixes across RTL, assertions, testbench infrastructure, and test content
• Improve methodology, infrastructure, and debug productivity for the broader coherent interconnect verification effort
• Contribute to review quality across specifications, verification plans, coverage closure, and debug strategy
• Mentor other engineers through technical leadership, design reviews, and verification best practices

• Bachelor’s or Master’s degree in Electrical Engineering, Computer Engineering, Computer Science, or a related field
• 7+…