Research, Post-Training

Posted

cognitionSan Franciscofull-time

Tech Stack

Responsibilities

  • Iterate on datasets, training stages, and hyperparameters to develop post-training recipes that determine model behavior and measure performance across evaluations and production.
  • Design and build evaluations that accurately capture agent performance, continuously refining them based on observed gaps.
  • Deeply understand unexpected training results to identify root causes and apply that knowledge to future problems.
  • Apply and advance techniques like RLHF, RLAIF, and constitutional approaches to shape agent reasoning, action, and human collaboration for long-horizon tasks.
  • Measure performance scaling with data and compute, and develop new methodologies when existing ones reach their limits.

Culture

Fast-PacedAutonomous TeamsDeep Work FocusMission-DrivenInclusive Hiring

Requirements

Preferred: PhD
Regions: Us

Get jobs like this in your inbox

Weekly Go, Next.js, TypeScript hiring trends and salary data — free.

Join 8 engineers getting weekly insights

Get job market intelligence in your inbox

Free weekly insights on tech hiring trends, salaries, and in-demand stacks.

Already a subscriber? Sign in

About cognition
Industry: ai
Size: startup

Cognition is an applied AI lab building end-to-end software agents like Devin, the first AI software engineer, and Windsurf, an AI-native IDE, to create AI that acts as a genuine teammate to engineers.

View company profile →