Hollek, Julie
Engineering Lead, HumaneIntelligence
Tech Council Member (2026 — )
Dr. Julie Hollek (she/her) is the Head of Engineering at Humane Intelligence. She is a data practitioner with a background in Data Science, trust and safety, and open source scientific computing. She serves as the president of the NumFOCUS board of directors and was the co-chair of the SciPy Conference from 2023-2025. In previous roles, Julie was the Director of Data Science at Mozilla where she led the DS organization. At Twitter, she built the Health Data Science team and is a subject matter expert at the intersection where trust and safety meets data. In 2023, Julie was a Governance in Online Speech Leadership Series Fellow. Throughout her career, Julie has been committed to improving diversity, equity, inclusion, and belonging by community-building. She founded Neustar Women in Technology, supporting women technologists both internally and externally; was a PyLadies San Francisco organizer; co-founded MozAPI, the Asian Pacific Islander employee resource group at Mozilla; and previously served on NumFOCUS’ Diversity & Inclusion in Scientific Computing (DISC) committee. Julie earned her Ph.D. in Astronomy from the University of Texas at Austin where she studied the chemical composition of metal-poor halo stars.
