# Member of Technical Staff (Evals & Post-Training) at Ambral

- Company: Ambral
- What the company does: AI for account management and revenue growth. Backed by Y Combinator.
- Company website: https://www.ambral.com/
- Type: Startups (AI role)
- Level: Senior
- Location: New York
- Work setup: On-site
- Pay: $165K to $325K base salary per year (USD)
- Posted: 2026-09-01
- Apply by: 2026-10-16
- Apply: https://jobs.ashbyhq.com/ambral/56dfa5cb-f18a-474f-88aa-adea46605c38
- Page: https://www.1752.vc/careers/jobs/ambral-member-of-technical-staff-evals-and-post-training/

## About the role

At the center of Ambral Labs is a replayable environment engine for the enterpirse. The system reconstructs a company’s world as it existed at a particular moment in the past then exposes that state through the same tools an agent would use in production. This lets us place new policies and agent configurations inside real historical environments, observe how they reason and act, and grade their performance against real outcomes.

## What they're looking for

- You have 1-7 years of experience building production software or machine-learning systems (we're hiring at multiple levels for this role)
- Bonus points for working on reinforcement-learning environments, LLM post-training, evaluation infrastructure, agent harnesses, or closely related systems
- You understand how environment design, reward design, context, tooling, and policy behavior interact
- You’re comfortable turning fuzzy business objectives into tasks and signals that can be evaluated reliably
- You can diagnose whether a model’s limitations come from the model itself, its context, its tools, its harness, or its training
- You can move between research questions and production implementation without treating them as separate jobs

Tags: Engineering