Principal Machine Learning Engineer
Core
Building the intelligence layer for ZoomInfo AI agents by extending the B2B data graph, resolving entity identity, and inferring buying intent from noisy multilingual text.
Role type
Principal Machine Learning Engineer (IC)
Builds
Production ML systems for entity resolution, propensity scoring, and LLM agent reasoning over company data.
Domain
B2B Data Intelligence / AI Agents
Deliverable
production ML models
Required skills
classical machine learning, applied statistics, language processing at scale, LLM agent design, production Python, distributed data processing, SQL
Preferred skills
ranking and retrieval, propensity modeling, entity resolution, open-weight model training, adversarial defense
Technologies
PyTorch, gradient-boosted trees, LLMs
Responsibilities
Extend data graph into the long tail, predict headcount/revenue for under-documented companies, resolve entity identity, infer buying intent from web content, build and evaluate LLM agents, distill large models for cost-effective serving, set technical direction and mentor team members
Seniority
Principal, hands-on IC with technical leadership
