Manabu has contributed east Asian language functions to Plone. He has been Board chair of PyCon Japan and is a core member of the Japan Plone Users Group. He was Guest Associate Professor of Hitotsubashi University in 2011, and he became a PSF Contributing member in September 2017.
Manabu is the founder and CEO of CMS Communications Inc., a Tokyo-based professional Plone and Python development company.