2022 Summer Internship - LLVM Compiler Engineering

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.

We at SiFive are proud to take a software first approach to develop tools and frameworks that achieve cutting edge performance without compromising quality for the SiFive Performance and Intelligence processor families. SiFive aims to develop high performance and Intelligence cores to lead the industry in processor computing in many domains and spearhead the RISC-V revolution. These processors build on the RISC-V Vectors (RVV) allowing SiFive to design Core IPs that deliver performance, are optimized for power and area, but do not sacrifice flexibility or programmability. Our software stack is co-designed with the hardware and developed with scalability and quality in mind. Join us to develop revolutionary software from the ground up.

Our LLVM based, world class compiler technology is the backbone of the SiFive software stack that enables SiFive high-performance Linux-capable cores and SiFive Intelligence processors. The compiler team's mission is to deliver cutting-edge performance in SiFive products while working with the community to advance RISC-V architecture and ISA extensions. SiFive is an active participant in the RISC-V ecosystem that opens a vast opportunity to develop the next generation of computer architecture and compiler technology. SiFive engineers are active members and maintainers in many open source projects, and our mission is to work with and drive the RISC-V ecosystem.

We are looking for intern candidates who will work in our LLVM compiler team and will learn techniques for tuning and optimizing the RISC-V LLVM compiler for the SiFive Intelligence processor family. 


  • Working with SiFive’s LLVM compiler team in improving performance for the SiFive Intelligence processor family.
  • Working with SiFive’s benchmarking teams in analyzing performance results used to support new compiler optimizations.
  • Working with SiFive’s compiler toolchains teams by providing support for near term product release.


  • Within 2 years of completion of a Computer Science Degree or equivalent technical field of study.
  • Have completed coursework, projects and or research in data structures/algorithms and compilers.
  • Strong C++ programming skills.
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.