Hannu Valtonen is the maintainer of the PostgreSQL extension pgmemcache, the PostgreSQL backup daemon pghoard and the replication/failover monitor pglookout. For the last decade his day job's have revolved around developing very large scale distributed systems.
In 2010 he co-founded the boutique software consulting firm Ohmu Ltd and since 2015 he's been actively working on next generation cloud database services at Aiven as VP Product. (https://aiven.io)