It goes under the subject of "dependability", so here you go (for illustration´s sake, it´s open to your creativity):
Dependability or still Personal Strenghts/Key Strenghts/(or under) Personal Profile (or what you have).Exceptionally reliable and trustworthy when given
A strong personal commitment to successfully completing all projects
Meets responsibilities promptly
Fulfills all commitments
Can be relied upon to do the job and any other
Committed to organizational goals
Effectively follow up assignments
These aren´t exact translations, but related to the "highly committed (or just commited)" thing. Thus, you could use more than one of these if you wish. Provided that one doesn´t state the same thing as the other.
You can also peer some resumé/CV, etc and see something with the words "diligent/devoted/enthusiastic/driven,...etc.
It´s also worth noticing, that what you write you are bounded to do (and to be like) when working, so...