NLU Architect

San Francisco /
Artificial Intelligence and Data Science /
Sirona’s mission is to make the highest quality healthcare available to everyone. We’re building a diagnostic engine that learns from and empowers the world’s most accurate radiologists–but enabling diagnosticians is just the beginning. Through our end-to-end workflow, we’re working to improve the quality and efficiency of the entire episode of care, simplifying the process of medicine and allowing doctors to focus on patients. We are interdisciplinary thinkers who are passionate about technology and medicine, and believe in the power of technology to protect and preserve human life. We’re in stealth mode and we’re hiring.

Natural Language Understanding (NLU) Architects work together with our Knowledge Representation and NLP teams to design and implement methods to extract clinical meaning from unstructured text. This involves translating natural language and medical terminology into precise, complex knowledge representations. Ideal candidates will be experienced with semantic data modeling/knowledge graphs, have expertise in modern NLP methods, and have a strong interest in medicine.


    • Advanced degree in computational linguistics or similar practical experience
    • Expert understanding of NLP tasks such as NER and relations modeling, syntactic dependency parsing, summarization tasks and natural language generation (NLG) 
    • Experience leveraging ontologies/knowledge graphs for complex knowledge-extraction tasks
    • Understanding of a programming language such as Python, including fundamental software engineering principles and NLP/machine learning design patterns
    • 5+ years experience delivering NLU solutions in an industrial setting


    • PhD in a related field or equivalent work experience
    • Refereed publications in NLP, ML, and/or bioinformatics venues 
    • Clinical experience (MD/DO, NP, PA, RN, PharmD, lab tech)
    • Experience applying NLP/NLU along with computer vision in a combined knowledge-extraction system, e.g.  for image captioning, search/retrieval or similar tasks

Responsibilities - Help design and implement Sirona's NLU Pipeline:

    • Work with our knowledge representation team to design and build ontologies to power our NLU pipeline
    • Work with our NLP team to build NER, relations, summarization and NLG capabilities 
    • Lead NLU design brainstorming sessions 
    • Refine methodologies to extract clinical meaning from unstructured text


    • Stock
    • Unlimited PTO
    • Medical insurance401(k)
    • Apple equipment
    • Dedicated research computing resources
    • Catered lunches and team events (Post- covid)
    • Sponsorship for conferences