The vast majority of that 1m+ employees are low-skilled wage laborers. Finding 3000 high-skill engineers is definitely a monstrous task. Twitter is 7+ years old

The vast majority of that 1m+ employees are low-skilled wage laborers. Finding 3000 high-skill engineers is definitely a monstrous task. Twitter is 7+ years old and they're only at ~1600 employees about half of which are engineers.