# Athanasios (Thanos) Papangelis

> Athanasios (Thanos) Papangelis is the co-founder, Chief Research Officer and a board member of the company behind TalentLMS. A computer engineer with a PhD in Computer Science, he helped develop Epignosis’s learning-software portfolio, served as CEO before stepping down at the end of 2023, and now explores AI, writes Downstream, builds browser-based experiments and invests in startups.

- **Role:** Co-founder, Chief Research Officer and Board Member at TalentLMS / Epignosis
- **Organizations:** Epignosis, TalentLMS, Beacon, PixelAgora, Downstream
- **From:** Edessa, Greece
- **Education:** Diploma in Computer Engineering, University of Patras, MSc in Software Quality, University of Patras, PhD in Computer Science, University of Patras
- **Known for:** Helped create and guide TalentLMS, eFront, TalentCards and TalentHR., Led Epignosis before the CEO transition at the end of 2023., Epignosis reported 22 million users in more than 160 countries in December 2023.

## Career timeline

- **2001** — Connected with future co-founder Dimitris Tsingos through an alumni-list email.
- **2003** — Launched Epignosis as a side project, according to his March 2026 interview and current company leadership biography.
- **2007** — Committed full-time to the venture following military service; an international open-source strategy followed.
- **2012** — TalentLMS launched, bringing a self-service SaaS approach to workplace training.
- **2015** — Approached Maria of Beacon to invest and join the board.
- **2023-12** — Stepped down as CEO effective December 31; remained a board member and product and innovation advisor.
- **2026** — Listed by TalentLMS as Co-founder and Chief Research Officer; publishes Downstream and builds browser games and tools.

## Achievements

- Helped create and guide TalentLMS, eFront, TalentCards and TalentHR.
- Led Epignosis before the CEO transition at the end of 2023.
- Epignosis reported 22 million users in more than 160 countries in December 2023.
- Built browser experiments including Polis, Chessmate, Imperium and Cognitive Bias Explorer.
- Reported investing directly in more than 20 startups in his July 2026 essay.

## Latest updates

- **2026-10** — Published A God That Answers Back on October 14, examining AI advice and authority.
- **2026-09** — Published Judgment Is the Job Now on September 30, introducing his Cognitive Bias Explorer.
- **2026-07** — Published I Keep Building the Games I Want to Play on July 27 about PixelAgora.
- **2026-07** — Published Raise Less. Prove More. on July 2, describing his angel-investing approach.
- **2026-06** — Published his account of building Polis with help from Claude on June 24.

## Links

- Website: https://papangelis.com/
- LinkedIn: https://www.linkedin.com/in/papagelis/

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Profile page: https://yespress.io/thanos-papangelis
Published by YesPress — https://yespress.io
Last updated: 2026-10-27