Principal ML Investigator
- Level
- Principal
- Work type
- On-site · Sunnyvale
Not stated in the posting: salary, visa.
Open. First seen 3 October 2026.
About the role
Cerebras Systems's standard text
Cerebras Systems builds the world's largest AI chip, 56 times larger than GPUs. This architecture allows Cerebras to deliver industry-leading training and inference speeds; over 10 times faster than GPU-based hyperscale cloud inference services.
This order of magnitude increase in speed is transforming the user experience of AI applications, unlocking real-time iteration and increasing intelligence via additional agentic computation.
Cerebras works with the leading model labs, global enterprises, and cutting-edge AI-native startups. OpenAI recently announced a multi-year partnership with Cerebras, to deploy 750 megawatts of scale, transforming key workloads with ultra high-speed inference.
About The Role
Cerebras is adding an ML team that can focus on a new ML effort that can align with existing teams. We are seeking a principal investigator who will partner with our ML leaders to formulate the new effort and to build up the new team and capabilities. This new team would coordinate with our current ML teams: Field ML, which works directly with customers, Applied ML, which builds new ML capabilities and applications for customers, and Core ML, which adapts ML algorithms to find unique capabilities of Cerebras hardware. The new team could take up the same or complementary responsibilities.
We would like the new team to work on some of the following areas:
- Post-training and reinforcement learning: Techniques used to improve model deployment quality through further training, tuning, RL, and focus on particular downstream tasks;
- Dataset curation and optimization: Techniques to collect and select high-quality data, which can help models to train or tune more quickly or to higher quality;
- LLM Pretraining: Techniques to ensure stability and compute-efficiency while pretraining high quality models. May include training dynamics, parameterizations, numerics, or others;
- Sparsity: Techniques to sparsify models or data that improve training time-to-quality, or optimize inference speed or throughput;
- Domains: Coding agents, reasoning agents, generative language, image, video.
Principal Investigator Responsibilities
- Build up a team capable of industry research and advanced development.
- Organize various advanced development topics into cohesive agenda.
- Adapt novel algorithms and model architectures to run on the Cerebras platform.
- Systematically train, tune, and evaluate models to guide/advise production scenarios.
- Collaborate with other teams to co-design next-generation hardware and software architectures.
- Collaborate with external partners (customers, academic) to drive insight and credibility.
Skills & Qualifications
- PhD in Computer Science or related field.
- Strong grasp of ML theory in one or more of the above areas.
- Proven experience engineering ML systems for scale or production deployment.
- Experience leading a team of researchers or engineers.
Preferred Skills & Qualifications
- Track record of patents or publications in top-tier conferences or journals.
- Experience with large language models (e.g., GPT family, Llama).
- Experience with distributed training concepts and frameworks.
- Experience in training speed optimizations, such as model architecture transformations to target hardware, or low-level kernel development (e.g., Triton).
- Ability to analytically model or optimize system performance.
Cerebras Systems's standard text
Why Join Cerebras
People who are serious about software make their own hardware. At Cerebras, we have built a breakthrough architecture that is unlocking new opportunities for the AI industry. With dozens of model releases and rapid growth, we’ve reached an inflection point in our business. Members of our team tell us there are five main reasons they joined Cerebras:
- Build a breakthrough AI platform beyond the constraints of the GPU.
- Publish and open source their cutting-edge AI research.
- Work on one of the fastest AI supercomputers in the world.
- Enjoy job stability with startup vitality.
- Our simple, non-corporate work culture that respects individual beliefs.
Find out more about what it's like to work at Cerebras here!
Apply today and become part of the forefront of groundbreaking advancements in AI!
Cerebras Systems is committed to creating an equal and diverse environment and is proud to be an equal opportunity employer. We celebrate different backgrounds, perspectives, and skills. We believe inclusive teams build better products and companies. We try every day to build a work environment that empowers people to do their best work through continuous learning, growth and support of those around them.
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What this role asks for
Standard for data science / ML roles
LLM
Common in data science / ML postings at any company.
55% of this description is written for the role. The rest is Cerebras Systems's standard text, folded away below.
Read against Cerebras Systems's other open postings on this site.
The team: Cluster HIRES STEADILY
This role is one of 12 open in Cluster. 2 were posted in the last 30 days and the oldest in March: a team that hires all year rather than one being built.
WHAT THE TEAM WORKS WITH, ACROSS ITS POSTINGS
Python (8 of 12), Kubernetes (5 of 12), Linux (5 of 12), Embedded Systems (4 of 12), AWS (3 of 12), Bash (3 of 12), C++ (3 of 12)
OTHER ROLES ON THIS TEAM
- AI Fleet Platform Software Engineer posted Oct 2
- AI Datacenter Infra engineer posted Sep 21
- Software Engineer - Host and Network IO posted Sep 10
- Technical Lead Manager, Infrastructure Hardware (Server and Network Systems) posted Aug 21
- Software Engineer, Cluster Deployment posted Jul 23
- Senior Software Development Engineer in Test (SDET) - AI Cluster Networking and Security posted Jul 16
- Infrastructure Engineer (Data Center Operations) posted Jul 16
- Senior Software Development Engineer in Test (SDET) - AI Cluster posted Jul 15
- Applied Machine Learning Research Scientist posted Mar 5
- Compute Server Platform Architect posted Feb 18
- Senior Manager - Cluster Security posted Mar 24
From the team and dates on Cerebras Systems's own job board.
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