Senior ML Engineer: Data Graphs, LLMs & Scale

ZoomInfo Technologies LLC; United States; Remote; USD 193,000 - 303,000; Full time

Job summary

ZoomInfo Technologies LLC is hiring a Principal Machine Learning Engineer to set technical direction for hard problems in data graph enhancement and entity resolution. You will own outcomes end to end, choosing ML approaches and language models as needed.

You will lead the deployment of ML systems, build scalable agents, and mentor teammates, delivering impact at scale in a remote-friendly environment.

Qualifications

• Must demonstrate production ML experience and leadership as an IC.
• Strong Python and SQL skills; experience with distributed data processing.
• Experience with LLMs, NLP, and building agents or multi-step systems.
• Mentoring and design-review experience desirable.
• Experience deploying ML systems to production.

Responsibilities

• You will extend ZoomInfo’s data graph by extracting leadership, locations, and products from company websites and detecting stale records.
• You will predict headcount and revenue for under-documented companies using gradient-boosted trees, regression with missing inputs, and calibrated uncertainty.
• You will determine whether two records describe the same company or person, measuring both wrongly merged and wrongly split outcomes.
• You will infer buying intent from the meaning of web content across large volumes of multilingual, noisy text, feeding propensity scoring, lookalike retrieval, and contact recommendations.
• You will build agents that research companies and cite sources, and design the evaluations that separate a correct result from a run that merely finished.
• You will distill large models into smaller ones that run cost-effectively across the full dataset, owning quantization and serving as part of the same work.
• You will take ambiguous, high-stakes problems from undefined to shipped, setting technical direction and raising the engineering bar through design review and mentorship.

Job description

ZoomInfo Technologies LLC is hiring a Principal Machine Learning Engineer to set technical direction for hard problems in data graph enhancement and entity resolution. You will own outcomes end to end, choosing ML approaches and language models as needed.

You will lead the deployment of ML systems, build scalable agents, and mentor teammates, delivering impact at scale in a remote-friendly environment.