I’m a software engineer based in London, but originally from the Netherlands. In the last couple of years I have mostly focused on version control, software distribution and networking (L3 and up).

As of April 2021, I work as a Site Reliability Engineer at Cognite (we’re hiring!).

Between February 2013 and March 2021, I worked as a Site Reliability Engineer at Google in London, mainly on the authoritative DNS servers and other kinds of frontend infrastructure.

Between 2009 and 2012 I worked at Canonical Ltd., on Launchpad, Ubuntu, Bazaar and various cloud-related projects.

My somewhat outdated free software home page can be found at https://samba.org/~jelmer/. Send me e-mail at jelmer@jelmer.uk. My PGP key is D729A457. My XMPP address is jelmer@jelmer.uk and on Matrix you can find me as @jelmer:jelmer.uk.

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