OpenAI

Agent Post-Training, API & Power Users

OpenAI
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3 months ago
San Francisco, CA, USAMid Level / Senior
H1B sponsor

Base Salary

$295k - $445k/yr

Responsibilities

  • Design and run experiments to improve model behavior in API and power-user workflows.
  • Build evals, graders, and environments based on real developer workflows.
  • Partner with users to identify behavior gaps and convert product signals into interventions.
  • Improve model behavior in multi-step tasks and error recovery.
  • Own end-to-end model behavior projects from analysis to launch readiness.
  • Develop feedback loops using user traces and API patterns to discover model gaps.
  • Decide on agentic capabilities and behavioral fixes for major model runs.
  • Debug failures in shipped models by analyzing traces and evals.
  • Work on early-training and alignment interventions to shape agent behavior.
  • Enhance the machinery for large-scale training and launch.

Requirements

  • Strong technical fundamentals in ML, software engineering, systems, or applied research.
  • Hands-on experience with LLMs, post-training, and production ML systems.
  • Ability to form hypotheses about model behavior from transcripts and eval failures.
  • Excitement for solving ambiguous capability problems with noisy signals.
  • Deep care for developer and expert-user experience in real workflows.
  • Comfortable working across research, product, infrastructure, and safety boundaries.
  • Willingness to build systems and processes as needed by the team.
  • Desire to train and ship models that are genuinely useful for various users.

Categories

BackendData Science
OpenAI

About OpenAI

10,000+ employees

OpenAI builds and deploys large-scale AI models and tools—including ChatGPT, GPT-4–class models, DALL·E, and Whisper—sold via APIs and enterprise subscriptions to developers and businesses. It monetizes through usage-based API pricing and ChatGPT Plus/Team/Enterprise, and also reaches customers via Microsoft’s Azure OpenAI Service. Founded in 2015 and headquartered in San Francisco, it operates as a private partnership.

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