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> make it possible to run WhatsApp on only 50 engineers Frankly, I'm sure Erlang is great, but with 50 full time skilled engineers I'm pretty sure you could ru

• nine_k 10y ago
  Ask Twitter team; they may have a different story.
• im_down_w_otp 10y ago
  The largest explosion in their user base came when I think they were at something like ~11 engineers, and from what I've heard the largest additions to their engineering team came on the frontend side, not the backend.