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Research Intern

Cartesia

Salary not specified
Sep 19, 2025
San Francisco, CA, US
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Cartesia is looking to build the next generation of AI: ubiquitous, interactive intelligence that runs wherever you are. Today, not even the best models can continuously process and reason over a year-long stream of audio, video and text—1B text tokens, 10B audio tokens and 1T video tokens—let alone do this on-device. Cartesia is pioneering the model architectures that will make this possible.

Requirements

  • Comfortable navigating complex machine learning codebases.
  • Deep machine learning background, including a strong grasp of fundamentals in sequence modeling, generative models and common model architecture families (RNNs, CNNs, Transformers).
  • Experienced model trainer, ideally previously wrote and pretrained large-scale models.
  • Proficient in Python and Pytorch (or similar framework) and tensor programming more broadly.
  • Familiarity with efficiency tradeoffs in designing model architectures for accelerators such as GPUs.
  • Prior research experience in advancing state space models or implementing them in practice.
  • Experience in optimizing model inference with CUDA, Triton or other frameworks.

Responsibilities

  • implement new model backbones, architectures and training algorithms,
  • rapidly run and iterate on experiments and ablations,
  • build training infrastructure that scales to massive multimodal datasets,
  • stay up-to-date on new research ideas.

Other

  • in collaboration with a variety of machine learning, data and systems engineering stakeholders.
  • Pursuing advanced degrees in machine learning (MS/PhD). Regardless of background, consider applying if you have strongly relevant experience.
  • We don't offer part-time or remote internships.
  • We’re an in-person team based out of San Francisco.
  • Relocation assistance.