Elies Campo
(born 1983) full name Elies Campo i Cid; Catalan business person; business developer at WhatsApp (2013-14) then Telegram (2015-21). In 2025, he was interviewed as part of a documentary where he spoke out against Telegram.
Georgiy Lobushkin
a former Telegram press secretary, and probably a close friend of Pavel Durov
Anton Rozenberg
An ex-Telegram employee, and semi childhood friend of Nikolay Durov. Went from close bonds with Nikolay to enemies. Was fired most likely due to a conflict with Nikolay. The full story can be read here.
Axel Neff
an American entrepreneur who used to work at Telegram in its early days, and probably helped Telegram rent servers in Buffalo, U.S.
Andrey Lopatin
a Russian software developer who used to work at Telegram in its early days
Ilya Samorodov
a Russian developer who used to work on Telegram’s Android app
Nikolay Kudashov
Also known as DrKLO, a Russian software developer who created a Telegram app for Android in a contest, which was then made the official Telegram Android app. He continued working on it until 2021.
Gregory Klyushnikov
an ex-Telegram developer who used to work on Telegram calls before they were migrated to WebRTC