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Core Regression Debug Lead Engineer



Bengaluru, Karnataka, India
Posted on Tuesday, January 31, 2023
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.
Lead CPU verification engineer driving core level regression debug, triage and responsible for the functional sign-off for the core.


  • Functional verification with emphasis on core level regression debug and triage for simulation and emulation regressions
  • Hands-on debug for core level failures. Propose and implement stimulus enhancements and debug capability improvements for core, cluster and chip level testbench environments
  • Primary owner for driving bug hunting using all available stimulus generators. Analysis of bugs found and proposing not only stimulus but also configuration and coverage changes
  • Drive core level regression environment enhancements to improve the overall productivity for the team
  • Develop detailed core level verification plans by understanding both ISA and microarchitectural specifications for the design
  • Support design deployment across simulation and emulation platforms
  • Develop random and directed stimulus that spans pre-silicon, emulation and post-silicon domain
  • Work with design, test and post silicon validation teams to ensure high quality delivery of the entire CPU core / cluster

Experience & Qualifications

  • BS/MS/PhD in EE/ECE/CE/CS with at least 10 years of experience
  • Strong background and experience with high performance OOO CPU microarchitecture
  • Experience and understanding of one or more ISAs - x86, ARM or RISCV
  • Significant experience debugging RTL and DV in a simulation environment, proficient at waveform and log file based debug
  • Experienced with assembly, C/C++ and UVM based stimulus generation targeting both ISA and microarchitectural scenarios
  • Familiar with simulation, formal and emulation environments
  • Hands-on with scripting (Python, PERL)
  • Experience with hardware description languages (Verilog, VHDL) and simulators (VCS, NC, Verilator)
  • Strong problem solving and debug skills across various levels of design hierarchies
Tenstorrent offers a highly competitive compensation package and benefits, and we are an equal opportunity employer.