Full-Time

Member of Technical Staff

Research

Crucibl

Crucibl

No salary listed

H1B Sponsorship Available

San Francisco, CA, USA

Hybrid

Three days in-office per week required.

Category
AI & Machine Learning (1)
Required Skills
LLM
Machine Learning
Requirements
  • At least one undeniable signal of excellence, such as published research at a top venue, a research role at a frontier lab, or a track record of novel technical contributions.
  • Deep understanding of how large language models reason, fail, and can be evaluated.
  • Strong fundamentals in machine learning, statistics, or natural language processing.
  • Ability to move quickly from an open-ended research question to a testable hypothesis.
Responsibilities
  • Research how frontier models reason through ambiguous, high-stakes business decisions and identify where they fail.
  • Design novel methods for reasoning, evaluation, and calibration beyond standard benchmarks.
  • Translate open problems in reasoning, uncertainty, and multi-step decision-making into approaches that can be tested and shipped.
  • Define what good judgment looks like for a model and build evaluation frameworks to measure it.
  • Design experiments that reveal real failure modes rather than only leaderboard scores.
  • Turn research findings into concrete recommendations for product and applied teams.
  • Shape the technical vision and roadmap alongside the founding team.
  • Bring outside research thinking into the company.
  • Define rigorous, applied research standards for an AI-first organization.
  • Raise the technical bar for the growing team.
Desired Qualifications
  • Experience designing evaluation frameworks or benchmarks for reasoning, decision-making, or agentic systems.
  • Published or shipped work on uncertainty, calibration, multi-step reasoning, or large language model evaluation.
  • Experience operating in a high-growth, high-ambiguity environment.
  • An owner-oriented, big-picture approach rather than focusing only on an assigned area.

Company Size

N/A

Company Stage

N/A

Total Funding

N/A

Headquarters

N/A

Founded

N/A