- Work from
- United States
- Contract
- Full-time
- Experience
- Lead
- Salary
- $200K – $300K / year
- Posted
- 9 November 2026
- Apply by
- 8 January 2027
You will develop agent capabilities and evaluation systems that help ensure real-world tasks are completed reliably, with measurable quality.
About the role
Join a small, senior team building autonomous AI assistants for executive workflows.
Responsibilities
- Build agents that complete delegated work end to end for real users.
- Define reliable measures of success for agent tasks and maintain representative evaluations.
- Develop new agent capabilities and validate them before they reach users.
- Investigate production failures and deliver fixes that address underlying causes.
- Build systems to detect known failure patterns and emerging issues at scale.
- Improve agent recovery when tools or websites fail.
- Create repeatable methods for engineers to measure the impact of agent changes.
Requirements
- At least 3 years of data science or machine learning experience building evaluation systems, metrics, or quality measurement for products.
- Production-quality Python and SQL skills, including experience analyzing large datasets and building automated pipelines.
- Experience designing evaluation frameworks, datasets, measurable criteria, and appropriate metrics.
- A track record delivering production AI, machine learning, agent, or agent-evaluation systems for real users.
- Experience improving agent reliability, owning systems end to end, and measuring results in production.
- Familiarity with statistics, experiment design, and realistic end-to-end simulations; experience with fine-tuning, post-training, or reinforcement learning is valuable.
- Experience with Python, Django, React, and TypeScript; familiarity with evaluation tools such as Braintrust or Raindrop is useful.
- Demonstrated progression and sustained experience in a role, with the ability to work through ambiguity and ship quickly.
Eligibility
- Visa sponsorship is not available.
Salary
Base salary is $200,000 to $300,000 USD annually.
Location
On-site in Palo Alto, California, with four days a week in the office.
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