Red Cell Welcomes Sean O’Keefe as Deputy CTO
MCLEAN, Va.--(BUSINESS WIRE)-- Red Cell Partners today announced that Google and Function Health veteran Sean O’Keefe has joined the firm as Deputy Chief Technology Officer.
This press release features multimedia. View the full release here: https://www.businesswire.com/news/home/20260312324028/en/

Sean O’Keefe
O’Keefe is responsible for overseeing the implementation of Red Cell’s technology strategy, leading daily engineering operations and workflows, and managing the firm’s engineering teams.
“Sean is a brilliant, mission-driven, and highly regarded leader whose deep experience across advanced engineering, AI, data science, and research makes him an exceptional addition to the Red Cell team,” said Red Cell’s Chief Product and Technology Officer Michael Kilberry. “His technical expertise further strengthens our organization as we work to deliver the capabilities shaping the future of healthcare, cyber, and national security. We are thrilled to have Sean on our team.”
Prior to joining Red Cell, O’Keefe served as the Senior Vice President of Engineering at Function Health, where he was the first engineering hire, building the company from zero to one. At Function Health, O’Keefe led the development of a secure health data platform; grew the department to a multidisciplinary team of engineers, and launched a generative AI platform utilizing LLMs. Early in his career, O’Keefe was a Data Scientist at Google before joining Google Research as a Senior Software Engineer, where he served as the technical lead for the TensorFlow Model Remediation Library. His work there focused on the critical frontier of AI safety, designing open-source frameworks to mitigate bias and hallucinations. A former Green Beret in the 10th Special Forces Group, O’Keefe previously worked at Bridgewater Associates, where he conducted quantitative research and was a growth advisor for the CapitalG portfolio.
“Throughout my career—from serving in Special Forces to building AI at Google and scaling Function Health to a Series B, I’ve seen how purpose-driven technology can solve the world’s most daunting challenges. I am honored to join Red Cell Partners, where we aren’t just building software; we are forging the innovative tools essential to safeguarding our national security and to transforming the future of healthcare,” said O’Keefe.
About Red Cell Partners
Red Cell Partners is a venture studio building rapidly scalable technology-led companies that are bringing revolutionary advancements to market in healthcare, cyber, and national security. United by a shared sense of duty and deep belief in the power of innovation, Red Cell is developing powerful tools and solutions to address our Nation’s most pressing problems. Visit us at redcellpartners.com and follow us on social media (LinkedIn, X, Instagram).
View source version on businesswire.com: https://www.businesswire.com/news/home/20260312324028/en/
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Source: Red Cell Partners
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