Model Behavior Architect

Job Description

Perplexity is looking for a Model Behavior Architect to help shape systems that reliably answer users' questions.Responsibilities

Design, refine, and implement prompt engineering strategies to guide model behavior across research and general knowledge use cases

Identify edge cases and behavioral inconsistencies in model outputs through structured testing and prompt iteration

Develop automated and semi-automated pipelines for evaluating prompt effectiveness at scale

Work cross-functionally with researchers, PMs, and engineers to align model behavior with product goals

Collect and synthesize qualitative and quantitative feedback to inform prompt design improvements

Collaborate on prompt libraries and reusable frameworks for internal and production-facing systems

Stay current with the latest prompt engineering, alignment, and evaluation techniques from both industry and academiaQualifications

Demonstrated passion for AI and can share specific prompt engineering and chaining projects you're proud of

Background in philosophy, psychology, linguistics, data science, or related fields

Familiar with Python and running simple scripts

High-level understanding of LLMs, training, RL

Excellent communication skills, particularly in teaching complex concepts

Creative problem-solving abilities with a "hacker spirit" for solving puzzles

At Perplexity, we've experienced tremendous growth and adoption since publicly launching the world's first fully functional conversational answer engine in 2022. We've grown from answering 2.5 million questions per day at the start of 2024 to around 20 million daily queries in December 2024. We also offer Perplexity Enterprise Pro, which counts leading companies like Nvidia, the Cleveland Cavaliers, Bridgewater, and Zoom as customers.

To support our rapid expansion, we've raised significant funding from some of the most respected technology investors. Our investor base includes IVP, NEA, Jeff Bezos, NVIDIA, Databricks, Bessemer Venture Partners, Elad Gil, Nat Friedman, Daniel Gross, Naval Ravikant, Tobi Lutke, and many other visionary individuals. In 2024, our employee base grew nearly 300%, and we're just getting started.

Final offer amounts are determined by multiple factors, including, experience and expertise, and may vary from the amounts listed above.

Equity: In addition to the base salary, equity may be part of the total compensation package.

Benefits: Comprehensive health, dental, and vision insurance for you and your dependents. Includes a 401(k) plan.

Full-time