MTech is a Drupal-only services company based out of Nicaragua. It hires locals to spur some economic development.
The company currently employs one American and several Nicaraguans and since the launch of D8 has focused a lot of its time on D8 migrations. It's lead developer, heddn, is from the USA (Midwest) but now lives and is active in the Nicaragua and Central America region, and is also a core maintainer.
Active involvement in the core and contrib issue queues. A few patches get rolled and/or RTBCed every week.
MTech's employees are active in the Nicaragua community, IRC mentoring and in a lot, lot more.