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Principal Validation Engineer, High Speed IO



Santa Clara, CA, USA
Posted on Tuesday, April 2, 2024

Tenstorrent is leading the industry on cutting-edge AI technology, revolutionizing performance expectations, ease of use, and cost efficiency. With AI redefining the computing paradigm, solutions must evolve to unify innovations in software models, compilers, platforms, networking, and semiconductors. Our diverse team of technologists have developed a high performance RISC-V CPU from scratch, and share a passion for AI and a deep desire to build the best AI platform possible. We value collaboration, curiosity, and a commitment to solving hard problems. We are growing our team and looking for contributors of all seniorities.

As a High Speed IO Validation Engineer, you will be responsible for ensuring the proper functionality and performance of physical layer (PHY) components and interfaces in electronic systems. Your primary role will involve designing and implementing system software and firmware features for high speed IO and memory IPs. Executing unit tests to verify the compliance of PHY designs and drive issue debug found at all phases of product life cycle. You will work closely with cross-functional teams, including hardware engineers, software developers, and system architects, to ensure the successful validation of PHY designs.

This role is hybrid, based out of Toronto.


  • Functional Test Planning: Collaborate with design and system teams to understand the PHY specifications and develop test plans for bringup and validation activities. Define test objectives, strategies, and methodologies to ensure comprehensive coverage of the PHY functionality.
  • Test Development: Design and implement validation tests for PHY components and interfaces. Develop test scripts, test cases, and test procedures using appropriate scripting or programming languages. Leverage test equipment, such as oscilloscopes, logic analyzers, and signal generators, to capture and analyze signals.
  • Feature Implementation: Add features into firmware to enhance PHY training, power saving, and debuggability to facilitate test development and system software.
  • Test Execution: Execute unit tests during bringup to evaluate the performance, robustness, and compliance of PHY designs on various platforms. Monitor and debug issues that arise during testing, and collaborate with the relevant teams to resolve them effectively.
  • Data Analysis and Reporting: Analyze test results, identify anomalies, and document any non-compliance issues. Generate comprehensive reports summarizing the test setup, results, and recommendations for design improvements. Communicate findings to stakeholders, including design teams and project stakeholders.
  • Collaboration and Communication: Collaborate closely with cross-functional teams, including design engineers, system architects, 3rd party vendors, and software developers, to ensure alignment on requirements and design specifications. Participate in design reviews, contribute to technical discussions, and provide input for design improvements based on validation insights.
  • Test Automation: Continuously explore opportunities to innovate for test automation to enhance efficiency and repeatability. Develop and maintain automated test frameworks, scripts, and tools to streamline validation processes and reduce manual efforts.
  • Industry Standards Compliance: Stay updated with industry standards, protocols, and specifications relevant to PHY designs. Ensure that the validation activities comply with the required standards.

Experience & Qualifications:

  • Bachelor's or Master's degree in Computer or Electrical Engineering, or a related field.
  • 8+ years of experience in high speed IO PCS, PMA/Serdes(PHY), memory design/verification/post-silicon validation is required.
  • Proficiency in programming languages such as Python, C/C++, or scripting languages for test automation.
  • Familiarity with lab equipment such as oscilloscopes, logic analyzers, signal generators, and protocol analyzers.
  • Strong understanding of digital and analog circuits, including signal integrity and noise analysis.
  • Extensive experience with software and firmware development, platform level debug, power delivery, sequencing, analysis and optimization.
  • Experience in ASIC bring-up, validation, debug from first chip back to production
  • Excellent analytical and problem-solving skills to debug and troubleshoot issues.
  • Effective communication skills to collaborate with cross-functional teams and document validation results.

Compensation for all engineers at Tenstorrent ranges from $100k - $500k including base and variable compensation targets. Experience, skills, education, background and location all impact the actual offer made.

Tenstorrent offers a highly competitive compensation package and benefits, and we are an equal opportunity employer.

Due to U.S. Export Control laws and regulations, Tenstorrent is required to ensure compliance with licensing regulations when transferring technology to nationals of certain countries that have licensing conditions set by the U.S. government.

Our engineering positions and certain engineering support positions require access to information, systems, or technologies that are subject to U.S. Export Control laws and regulations, please note that citizenship/permanent residency, asylee and refugee information and/or documentation will be required and considered as Tenstorrent moves through the employment process.

If a U.S. export license is required, employment will not begin until a license with acceptable conditions is granted by the U.S. government. If a U.S. export license with acceptable conditions is not granted by the U.S. government, then the offer of employment will be rescinded.