Physical Design and Flow Engineer

About SiFive

SiFive is an idea-to-silicon company founded by the inventors of RISC-V to simplify the design and production of custom SoCs.

As the leading commercial provider of RISC-V processor IP, SiFive is on a mission to help engineers design custom chips for domain-specific solutions for many markets, including 5G, edge AI, enterprise networking, storage, and consumer devices.

Industry-leading innovators, including six of the top ten semiconductor companies, are working with SiFive thanks to our proven success, deep expertise, and rich partner ecosystem. With SiFive’s rich IP ecosystem and accessible design platform, every market has access to the development of workload-focused hardware needed to design next-generation products.

As a Physical Design Engineer in the Implementation team, you will contribute to the development of industry-leading CPU IP to support the SiFive vision of enabling chip design by anyone. We are looking for people who are as excited as we are about working in a fast-paced dynamic environment to bring new hardware IP to market quickly, with high quality and exceptional performance.

Responsibilities:

  • Physical implementation flow development to drive best in class automation and PPA.
  • Implementing and optimizing our broad portfolio of RISC-V CPU's from RTL to GDSII.
  • Closing ambitious performance, power, and area (PPA) goals at block and/or CPU level.
  • Collaborating with the microarchitecture and RTL teams to optimize PPA trade off's.

Requirements:

  • 10+ years of physical implementation experience with multiple tape outs in a wide range of technologies (28nm - 5nm); Experience with CPU implementation and advanced process nodes (16nm and below) is strongly preferred.
  • Experience developing and owning physical implementation flows and infrastructure (synthesis, DFT insertion, floorplanning, place and route, clock tree synthesis, static timing, power analysis, and signal and power integrity).
  • Experience with physical signoff (DRC/ANT/LVS/DFM, etc.) and engineering change orders (ECO's).
  • Knowledge and skill in optimizing PPA through floorplanning, placement and timing constraints, useful skew, and similar techniques.
  • TCL and Python scripting.
  • Attention to detail and a focus on high-quality design.
  • Ability to work well with others and a belief that engineering is a team sport.
  • Bachelor’s degree or higher in Electrical Engineering or Computer Engineering.
SiFive is proud to be an equal employment opportunity workplace. We offer a competitive compensation package that includes flexible paid time off; health, vision and dental benefits; 401(k) plan; employee stock option program, and much more.
We will ensure that individuals with disabilities are provided reasonable accommodation to participate in the job application or interview process, to perform essential job functions, and to receive other benefits and privileges of employment. Please contact us to request accommodation.
If you yearn to be challenged and wish to work in an environment where the boundaries of your creativity and skills will be tested, then SiFive is the place for you!
Notice to Staffing Agencies / External Recruiters:
Thank you for your interest in SiFive Inc. Please note that SiFive does not accept unsolicited resumes from external agencies unless contracted to fill a specific position. Agencies are hereby specifically directed NOT to contact SiFive employees directly in an attempt to present candidates – all applications must go through SiFive's internal recruiting team. Any third-party resume forwarded by agencies/external recruiters to a SiFive mailing address, fax machine or email address, directly to SiFive employees, or to SiFive's resume database will be considered property of SiFive Inc and treated as a direct application. This exchange does not constitute an agreement between SiFive and the agency/external recruiter. SiFive reserves the right to contact the candidate directly. Employment agencies/external recruiters will receive no compensation from SiFive or its companies.