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Stefanos Zafeiriou

Founder

Cofounder - Scientific Lead at Cogitat

London, England, United Kingdom

FoundedCogitat

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1,310 people in our graph share verified history with Stefanos — schools, employers, funds. One of them is your warm intro.

Manjari Chandran-RameshunlockedStefanos: together at Safe Intelligence (2025–2026)
Stefanos: together at Cogitat
Stefanos: together at Aristotle University of Thessaloniki (AUTH)
×9Stefanos: together at Imperial College London

About

Stefanos Zafeiriou is a Professor in Machine Learning and Computer Vision in the Department of Computing at Imperial College London and an EPSRC Early Career Research Fellow, with prior appointments including a Distinguished Research Fellowship at the University of Oulu (2016-2020). His research covers statistical machine learning methods applied to computer vision problems such as 2-D/3-D face analysis, deformable object fitting and tracking, and human behaviour analysis, and he has authored more than 70 journal papers along with numerous conference publications. He co-founded several startups, including Facesoft and Ariel AI, both of which exited in 2020, and received Imperial College London's President's Medals for Excellence in Research Supervision (2016) and Entrepreneurship (2022).

Cofounder - Scientific Lead at Cogitat

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In turn, Stefanos can intro founders to Cogitat's investors below.

Cogitat's investors · 2

Beast VenturesHong KongCambridge Angels groupCambridge · $195K – $1.9M checks

Co-founders at Cogitat

APAllan Ponniah
Allan PonniahCofounder - CEO
DADimitrios Adamos
Dimitrios AdamosCofounder - CTO
NL
Nikos LaskarisCofounder - Neuroinformatics Lead
IK
Irene KotsiaCofounder - Data/ML Lead
YP
Yannis PanagakisCofounder - AI/ML Lead

Experience

  1. Imperial College LondonProfessor in Machine Learning and Computer Visioncurrent2020 — presentLondon, England, United Kingdom
  2. Imperial College LondonReader in Machine Learning and Computer Vision2017 — 2020London, United Kingdom
  3. Imperial College LondonSenior Lecturer in Computer Vision/Statistical Machine Learning2015 — 2017London, United Kingdom
  4. Imperial College LondonLecturer in Computer Vision/Statistical Machine Learning2012 — 2015London, United Kingdom
  5. Imperial College LondonResearch Fellow (Junior Research Fellowship)2011 — 2012London, United Kingdom
  6. Imperial College LondonResearch Fellow2010 — 2011
  7. Imperial College LondonResearch Associate2010
  8. Imperial College LondonResearch Associate2008 — 2010
  9. GoogleAR Perception and GenAI Lead (Image and Video models)current2023 — presentLondon Area, United Kingdom
  10. CogitatCo-Foundercurrent2020 — presentLondon, England, United Kingdom
  11. Safe IntelligenceCo-Founder/Senior Advisorcurrent2022 — presentLondon, England, United Kingdom
  12. EmphatiqCo-Founder/Chief Scientistcurrent2019 — presentLondon, England, United Kingdom
  13. FacesoftCo-Founder/CTO2017 — 2023London
  14. Ariel AICo-Founder/Chief Scientist2018 — 2020London, England, United Kingdom
  15. University of OuluDistinguished Research Fellow2016 — 2019
  16. University of HoustonVisitor2009
  17. Aristotle University of ThessalonikiPhD in Computer Vision and Statistical Machine Learning2003 — 2007
  18. Artificial Intelligence and Information Analysis Lab in Aristotle UniversityPhD candidate/Researcher2003 — 2007

Skills & more

Machine Learning40Artificial Intelligence24Signal Processing21Pattern Recognition29Computer Vision43

Languages English

From Stefanos's professional profile.

Frequently asked questions

Who is Stefanos Zafeiriou?
Stefanos Zafeiriou is a Professor in Machine Learning and Computer Vision in the Department of Computing at Imperial College London and an EPSRC Early Career Research Fellow, with prior appointments including a Distinguished Research Fellowship at the University of Oulu (2016-2020). His research covers statistical machine learning methods applied to computer vision problems such as 2-D/3-D face analysis, deformable object fitting and tracking, and human behaviour analysis, and he has authored more than 70 journal papers along with numerous conference publications. He co-founded several startups, including Facesoft and Ariel AI, both of which exited in 2020, and received Imperial College London's President's Medals for Excellence in Research Supervision (2016) and Entrepreneurship (2022).
Where does Stefanos Zafeiriou work?
Stefanos Zafeiriou is Cofounder - Scientific Lead of Cogitat.
What companies did Stefanos Zafeiriou found?
Stefanos Zafeiriou founded Cogitat.
Where did Stefanos Zafeiriou go to school?
Stefanos Zafeiriou studied at Aristotle University of Thessaloniki (AUTH) (PhD, Computer Vision and Statistical Machine Learning); Aristotle University of Thessaloniki (AUTH) (BSc, Informatics).

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