Holger Krekel (hpk) has founded merlinux in 2004 and is one of the PyPy project founders. Besides work on core PyPy parts he develops and maintains py.test and the py lib and maintains the codespeak.net infrastructure. He managed several international projects.
Maciek Fijalkowski (fijal) is a core PyPy and JIT developer and has contributed and pushed forward in many project areas. He is involved with merlinux since 2006 and has also contributed to py.test.
Carl Friedrich Bolz (cfbolz) is a core PyPy developer since 2005, was employed by merlinux 2005-2007 and currently works at the Heinrich-Heine-University in Düsseldorf, Germany.
Benjamin Peterson (gutworth) is a core CPython developer and release manager for the CPython 3.1 series. He contributed a new parser and compiler for PyPy and is involved on PyPy JIT development.
Antonio Cuni (antocuni) is a core PyPy developer, maintainer of the PyPy.NET backend and is writing a thesis about JIT compilation to higher level backends.
Lene Wagner (lene) administrates merlinux (also has prokura) and cares for PyPy sprint funding matters. She works with merlinux since its foundation, particularly acted as managing director 2004-2007 where she co-managed international projects and the PyPy European Union's project consortium.
[Note: the IRC-names are added (in brackets). They are also valid email-addresses if you add @merlinux.de]