Profession:
Battlefield support - explosive ordnance disposal (battle armor and salvage/engineering mech qualified)
Command/Organization:
1st Davion Guards RCT (preferably during Julian Davion's return to the Federated Suns, but any era is OK).
Equipment:
Any battle armor, engineering, or salvage mech as appropriate to the mission (i.e. dealing with mech grade UXOs vs. IEDs in an urban environment).