Senior Machine Learning Engineer

About the Role: ZoomInfo is redefining how 40,000+ revenue teams find, engage, and win customers. As a Senior Machine Learning Engineer on the Foundation Data team, you will own critical projects enhancing the quality and reliability of core datasets. You will work at the intersection of cutting-edge AI and massive-scale data processing to solve complex entity resolution challenges.

What You'll Do

• Invent and productionize Transformer/RAG/Graph RAG architectures to surface the right contacts and insights.
• Prototype and launch hybrid dense/sparse retrieval pipelines on vector DBs for language-agnostic clustering.
• Own high-recall NER models that tag entities across multi-language text.
• Build cross-dataset entity-resolution frameworks that dedupe and merge hundreds of millions of records.
• Design and implement agentic workflows with robust evaluation frameworks, including A/B testing.

What You Bring

• 6+ years of hands-on ML/NLP experience (or 3+ years post-PhD/Master's) with delivered, revenue-impacting products.
• Deep expertise in modern AI architectures, including transformer stacks (BERT/GPT/T5), RAG systems, and vector-based information retrieval.
• Strong applied research capabilities using PyTorch or TensorFlow, paired with software engineering rigor in Python.
• Proven track record building NER or entity-resolution systems at a 100M+ record scale.
• Excellent communication skills with the ability to persuade technical and non-technical audiences.

Benefits

• Base salary range of $164,500 - $258,500 USD per year.
• Additional compensation such as Bonus, Commission, and Equity may apply.
• Comprehensive benefits including holistic mind, body, and lifestyle programs designed for overall well-being.
• 100% remote work flexibility within the USA.