Demo

Model Behavior Architect

Perplexity
San Francisco, CA Full Time
POSTED ON 3/21/2026
AVAILABLE BEFORE 5/15/2026
Perplexity is looking for a Model Behavior Architect to help shape our answer engine. This role collaborates with our research, design, and engineering teams to align model behavior with product goals.

Responsibilities

  • Design, refine, and implement context engineering strategies to guide model behavior across use cases. Identify inconsistencies in model outputs through well-designed research and evaluation projects. These projects may be either for internal or production-facing systems.
  • Develop automated and semi-automated pipelines for evaluating agent effectiveness at scale.
  • Stay current with the latest alignment and evaluation techniques from both industry and academia.

Qualifications

  • Demonstrated passion for AI and can share specific, related projects you're proud of.
  • Familiar with Python. While this is not strictly a production engineering role, you will need to be able to prototype and debug systems at scale and quickly understand the various components that go into answer generation.
  • Candidates should have high-level understanding of LLMs, training, RL. We’ve seen excellent candidates who background in philosophy, psychology, linguistics, data science, or related fields.
  • Excellent communication skills, particularly in teaching complex concepts.
  • Creative problem-solving abilities with a "hacker spirit" for solving puzzles

Compensation Range: $180K - $260K

Salary : $180,000 - $260,000

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