Zebu Flow Engineer

Job Title

Zebu Flow Engineer

Role Summary

Join SiFive's System Validation team to develop and maintain build and debug flows for modeling RISC‑V CPUs on emulation platforms (primarily Synopsys ZeBu) and FPGA-based platforms. The role focuses on integrating emulator flows into the internal wake-based build system, debugging hardware/software interactions, and automating runtime and debug workflows.

Experience Level

Entry-level — requires at least 1 year of relevant industry experience.

Responsibilities

Primary responsibilities include building and sustaining emulator and FPGA flows, debugging failures across hardware and software, and automating debug/runtime tooling.

• Build and maintain a modular flow for generating Synopsys ZeBu models and integrate compilation steps into the wake-based build environment.
• Perform root-cause and failure analysis across RISC‑V CPU hardware and software components.
• Use ZeBu features (waveform capture), ILA, and JTAG debuggers to troubleshoot and validate designs.
• Formulate and test failure hypotheses through systematic elimination of causes.
• Develop Python-based scripts and Bash utilities to automate debug workflows and integrate ZeBu runtime automation with SiFive manager tooling.
• Collaborate with software and validation engineering teams to resolve cross-functional issues.

Requirements

Must-have technical skills and attributes.

• Strong understanding of digital logic design.
• Experience using Verilog and porting designs to FPGA platforms.
• Practical experience with Linux and scripting (Python and Bash).
• Demonstrated problem-solving skills and a methodical approach to debugging.
• Positive attitude, proactive learner, and commitment to quality.

Education Requirements

Bachelor's or Master’s degree in Computer Science or Electronics and Communication Engineering is required. The posting specifies a minimum of 1+ years of relevant experience. No certifications or "equivalent experience" language was provided.

About the Company

Company: SiFive

Headquarters: San Mateo, California, United States

SiFive is a pioneering company in the RISC-V ecosystem, focused on transforming the future of computing by delivering high-performance, data-intensive RISC-V solutions. Their compute platforms empower leading technology firms to innovate across various markets, including AI, machine learning, and automotive sectors. SiFive is recognized for its commitment to ongoing innovation and fostering collaboration among talented teams, impacting lives by enabling advanced chip design.