Founding Machine Learning Engineer
Core
Founding ML engineer owning the ML function, shaping post-training pipelines and agent systems for an early-stage AI startup.
Role type
Founding Machine Learning Engineer
Builds
Post-training data pipelines, agent environments, tool interfaces, and evaluation frameworks
Domain
AI / Reinforcement Learning / Agent Systems
Deliverable
production ML models
Required skills
post-training data pipeline design, agent environment building, RL training systems, Python systems programming, evaluation framework design, trajectory data analysis, reward modeling, data validation, observability systems
Preferred skills
frontier AI lab background, reinforcement learning algorithm implementation, replay systems, agent debugging tools
Technologies
Python
Responsibilities
Structure and score experimental trajectories for training data; Design and implement evals and benchmarks for model reasoning; Build reliable agent environments and tool interfaces; Establish validation and provenance tracking for data quality; Set ML roadmap priorities; Lead and grow the ML team's technical direction
Seniority
Founding, hands-on IC with team leadership