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WhatsApp once had just 50 engineers with 900M users: https://www.wired.com/2015/09/whatsapp-serves-900-million-users-50-engineers/ https://www.wired.com/2015/09

• KeplerBoy 2y ago
  What more do you need? That's still plenty of people if you got a few thousand people at AWS/Azure or in this case Meta's in-house cloud making sure your service is running and scaling as it should.
• maxrmk 2y ago
  That ethos runs through everything the WA team does. I learned a bit about it when I was at fb and I was beyond impressed by how few servers WA used for its core infrastructure. It's a really well engineered product.
• l11r 2y ago
  As far as I know Telegram has around the same number of engineers even today, handling around the same size userbase.
  • redbell 2y ago
    Today, Telegram serves around 1B users and is run by only 30 engineers: https://www.reddit.com/r/cscareerquestions/comments/1djposn/how_did_telegram_survive_with_100_engineers_no_hr/ https://www.reddit.com/r/cscareerquestions/comments/1djposn/...
  • g-b-r 2y ago
    And support is almost non-existent
    • throw-the-towel 2y ago
      On par with Google's, then.