PSI

PSI

PSI Fellow

Boston · Full-time

Work authorization requiredDetected 176 days ago
PythonMachine LearningDeep LearningLLMsAgentic AIResearchLeadership

About the role

  • Our mission is to discover and commercialize transformative physics breakthroughs at scale with artificial superintelligence, safely, verifiably, and for broad public benefit.
  • The last century's golden age of physics gave us transistors, lasers, and nuclear energy.
  • We believe artificial superintelligence will unlock the next one.

Responsibilities

  • Collaborate directly with PSI's founding team and technical leadership on high-impact research at the intersection of physics and AI.

Requirements

  • Physics PhD or advanced PhD candidate (all but dissertation), with deep domain expertise in at least one physics field.
  • Demonstrated hands-on experience with modern AI and ML, not just curiosity.
  • You have built things, shipped models, or contributed to working systems.
  • You can write production-quality code, not just notebooks.

Nice to have

  • Experience with LLM fine-tuning, RLHF, or other post-training methods.
  • Background in agentic AI systems or multi-step reasoning.
  • Published ML research or significant open-source contributions.
  • Track record of crossing disciplinary boundaries between physics, ML, and software engineering.
  • This role is based in Boston.
  • You must have US work authorization for the duration of the fellowship
  • we do not sponsor visas for fellowship positions.
  • This role may involve access to information subject to U.S. export control regulations.

Compensation

  • Location and Compensation

Company info

  • Physical Superintelligence is a startup with roots at Google, NVIDIA, Harvard, Meta, MIT, Oxford, Johns Hopkins, Cambridge, and the Perimeter Institute building AI systems to discover new physics at scale.
  • The PSI Fellowship is designed for exceptional physicists who want to work at the frontier of AI-accelerated scientific discovery for 3 to 6 months full-time, with the goal of producing substantive technical contributions and, where appropriate, publishable research.
  • We're creating the infrastructure to industrialize scientific discovery and usher in this new era.

Visa & Work Authorization

  • You must have US work authorization for the duration of the fellowship; we do not sponsor visas for fellowship positions.
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This listing is sourced directly from PSI's careers page and normalized into a canonical job model.