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Zyphra

Open-source AI company building multimodal agents

Research Engineer - Model Architectures

AI ResearchConfirmed live in the last 24 hours
Full-timeSan Francisco, CA, USAIn-person

About the Job

Requirements

  • Strong research taste and intuition.
  • Ability to work through a research project from conception to execution and write-up.
  • Strong implementation and prototyping ability to take an idea from conception to experimentation quickly.
  • Ability to work and cooperate with others in a high-paced research setting.
  • Curiosity and interest in understanding intelligence.
  • Experience with long-term memory, retrieval-augmented generation and retrieval systems, dynamic or adaptive computation, and alternative approaches to credit assignment.
  • Experience with reinforcement learning, control theory, and signal processing.
  • Understanding of modern training pipelines and the hardware requirements for designing efficient architectures for graphics processing unit hardware.
  • Strong grasp of experimental methodology for running rigorous ablations and other hypothesis testing.
  • High proficiency with PyTorch and Python.
  • Ability to work in large pre-existing codebases and rapidly become productive.
  • Previously published machine learning research in well-respected venues.
  • Postgraduate degree in a scientific subject, specifically Computer Science, Electrical Engineering or Electrical and Electronics Computer Science, Mathematics, or Physics.

Responsibilities

  • Design and rigorously test novel model architectures and training methodologies.
  • Improve core modeling capabilities, including loss per floating-point operation and loss per parameter.
  • Address fundamental bottlenecks in contemporary models.
  • Work closely with the pre-training team so research insights can be integrated into next-generation models.

Desired Qualifications

  • Experience inventing and seriously assessing unconventional ideas.
  • Ability to bring a unique perspective to research.

About the Company

Zyphra

Open-source AI company building multimodal agents

Zyphra Technologies builds open-source, open-science AI focused on multimodal models and efficient inference across devices. It develops autonomous agent platforms for enterprises, with Maia as a multimodal general agent prototype that combines neural architectures, long-term memory, reinforcement learning, and continual learning for text and audio. The company also releases open projects like Zamba (a cost-efficient foundation model), Zamba2-2.7B (a fast, small language model), and Zyda (a 1.3 trillion token training dataset) to support research and development. Their goal is to enable personalized AI that runs offline across diverse hardware while sharing transparent research resources and strengthening AI silicon performance.

Company size
51-200
Company stage
Series B
Total funding
$621.4M
Headquarters
San Francisco, CA
Founded
2019

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