5 companies headquartered in Estonia are in the RemoteWork directory. None of them has a live role on RemoteWork at the moment, but each company page tells you who to contact and what to say if you reach out anyway.
AI is the most common sector (2). Tallinn is the most common city (4). Most common funding stage: Pre-Seed. Between them they have raised about $2.0B in disclosed funding; the best funded are Bolt ($2.0B).
2 of them hire from Nigeria or elsewhere in Africa. Headquarters is only where the company is registered; most of these hire remotely across time zones, so read each company page for where it actually hires.