Magnus developed and maintains the Windows port as part of an international team within the PostgreSQL Global Development group. He also works on other parts of the PostgreSQL backend, most recently authentication, SSL and Kerberos-related features.

He contributes to pgAdmin, the postgresql.org website and related infrastructure. He's been a PostgreSQL user since version 6.3. He currently serves as President of the Board for PostgreSQL Europe.

During paid daytime, he is a PostgreSQL and open source software consultant, and provides support and training through Redpill Linpro in Stockholm, Sweden.