Sentra
Machine Learning Research Scientist
$120K–$300K
San Francisco / Bay Area · On-site · Full-time · Posted Oct 9, 2025
- Experience
- 5+ years building novel systems in machine learning, NLP, knowledge graphs, or related areas.
About the job
Researches and builds machine-learning systems that turn organizational communications and events into evolving, searchable knowledge and predictions.
What you'll do
- Build LLM-powered extraction, memory consolidation, temporal knowledge graph, and causal reasoning systems.
- Research semantic compression, entity resolution, organizational pattern learning, and privacy-preserving cross-organizational learning.
- Publish research findings and contribute to the knowledge graph and organizational intelligence research community.
What they ask for
- 5+ years building novel systems in machine learning, NLP, knowledge graphs, or related areas, evidenced by publications, production implementations, or significant open-source contributions.
- Deep knowledge of knowledge graphs, graph neural networks, or temporal reasoning, demonstrated through shipped systems and architectural exploration.
- Strong ML and NLP foundation, particularly in information extraction, entity resolution, or semantic representation.
- Proficiency in Python and modern ML frameworks, with experience deploying models at scale.
Nice to have
- Graph databases (Neo4j, TigerGraph, Neptune) and query optimization for large-scale graphs.
- Information theory, compression, temporal data structures, causal inference, probabilistic reasoning, or Bayesian methods.
Pay
$150,000 – $300,000 USD (base salary); $120K – $300K USD (compensation; type not specified)
Tools
Python, PyTorch, Neo4j, TigerGraph, Neptune
AI focus
Builds LLM-powered information extraction and organizational memory systems, including temporal knowledge graphs, causal reasoning, pattern prediction, and privacy-preserving learning.
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