Pharmaceuticals
10 Pfizer AI and data science leaders
These ten current and former Pfizer AI and data science leaders have held director-level AI, machine learning or data science roles at Pfizer. A reader can learn how AI and data science leaders work at Pfizer from people who have held the role.
Professionals to explore
01—10Christopher G. Prener
LinkedInExperience: Sr. Director, AI and Data Science Lead for R&D Medical · Pfizer
Sr. Director, AI and Data Science Lead for R&D Medical at Pfizer since 2026. At Pfizer, Christopher was also Medical Evidence Generation, Platform Team Lead (2025–2026), Director, RWE Digital Platforms (2024–2025) and Director, Vaccines RWE Biocurator Scientist (2022–2023), and has been adjunct faculty at Washington University in St. Louis since 2023.
Djork-Arné Clevert
LinkedInExperience: Vice President, Head of Machine Learning Research · Pfizer
Vice President, Head of Machine Learning Research at Pfizer since 2022, a role the profile tags at vice president level in research. Djork-Arné was also Head of Machine Learning Research, Director, Senior Research Fellow at Bayer (2019–2022) and Senior Research Scientist at Bayer (2015–2019), and has been Principal Investigator at Explainable AI for Molecules - AiChemist MSCA DN Horizon Europe since 2023 and at AIDD-ITN since 2021.
Gaurav Jain
LinkedInExperience: Director and Head, AI/ML, Quantitative & Digital Sciences (AQDS) IND-PH · Pfizer
Director and Head, AI/ML, Quantitative & Digital Sciences (AQDS) IND-PH at Pfizer since 2025, a role the profile places in Mumbai. Gaurav was also Senior Group Lead (2024–2025) and Group Lead (2021–2024) in Informatics and Predictive Sciences at Biocon Bristol-Myers Squibb R&D center, and Senior Bioinformatics Scientist at TUM Klinikum Rechts der Isar.
Kate Ostbye
LinkedInExperience: Senior Director, AI Innovation & Data Science · Pfizer
Senior Director, AI Innovation & Data Science at Pfizer since 2024 and former Director, Enterprise Data Science and Machine Learning at Pfizer (2023–2024). Kate held the same director title at Seagen (2022–2023) and was Associate Director, Enterprise Data Science and Machine Learning there (2022), and the profile describes building AI/ML solutions that help researchers and staff.
Krishna Praneeth Kilambi
LinkedInExperience: Director, AI ML Quantitative & Digital Sciences Lead · Pfizer
Director, AI ML Quantitative & Digital Sciences Lead at Pfizer since 2025 and former Associate Director, AI ML Quantitative & Digital Sciences at Pfizer (2023–2025). Krishna was also Senior Scientist, Digital Biomarkers Data Science at Biogen (2020–2022), and the profile says Krishna leads initiatives in Pfizer R&D centered on AI/ML.
Savvas Karagiannidis
LinkedInExperience: Head of AI Solution Design Architecture · Pfizer
Head of AI Solution Design Architecture at Pfizer since 2025. At Pfizer, Savvas was also Director/TL of AI Product Delivery & Methodology (2024–2025), a role the profile describes as guiding a team of senior data scientists serving as AI/ML technology leads, and Director of Data Science Commercial Excellence (2022–2024).
Subha Madhavan
LinkedInExperience: Vice President & Head of AI/ML & Digital Sciences, Global Product Development · Pfizer
Vice President & Head of AI/ML & Digital Sciences, Global Product Development at Pfizer since 2022; the profile says Subha leads AI/ML and digital sciences within research and development. Subha was also Head of Data Science, Oncology R&D at AstraZeneca (2021–2022) and a forum leader for AI and machine learning in healthcare at HIMSS (2018–2021).
Suman Giri
LinkedInExperience: Vice President, Head of Data Science and AI · Pfizer
Vice President, Head of Data Science and AI at Pfizer since 2024. Suman was also Executive Director, Head of Data Science at Merck (2021–2024), Director, Data Science & Consulting at CitiusTech (2019–2021) and Data Science Manager at Highmark (2016–2019), and the profile places Suman in New York.
Timothy Lee Wiemken
LinkedInExperience: Head of Vaccines Medical AI and Innovation · Pfizer
Head of Vaccines Medical AI and Innovation at Pfizer since 2026, a role the profile tags at director level. At Pfizer, Timothy was also Senior Director, Artificial Intelligence Acceleration Transformation Engineering (2026), Head, RWD Artificial Intelligence and Informatics (2025–2026) and Senior Director and Lead, Operational Analytics (2025).
Μαρία Γιάτσογλου
LinkedInExperience: Director, AIDA R&D AI and Data Science · Pfizer
Director, AIDA R&D AI and Data Science at Pfizer since 2025, a role the profile tags at director level in research, and former Senior Manager, Data Scientist at Pfizer (2021–2025). Maria was also Lead Data Scientist at Dataviva (2020–2021) and at Veltio, now part of Dataviva (2019–2020), and the profile places Maria in Thessaloniki, Greece.
Choose the right perspective
Match the person's area to your question, since machine learning research, AI in clinical development, medical and real-world evidence data science, and enterprise AI delivery are different jobs. Check whether the relevant role is current and which part of the business it supports.
Questions to take into the conversation
- 01How does a large drugmaker decide where AI and machine learning teams sit across research, development and commercial groups?
- 02What does it take to move an AI model from a research project into regular use by scientists?
- 03How do data science teams in pharma work with medical and regulatory colleagues on evidence?
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About this directory
This is a professional research starting point based on business profile data retrieved on . Titles and companies reflect that source snapshot; roles marked former had ended by then. Check the linked profiles for current details. Inclusion does not imply Instant Expert membership or availability.
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