SAP trainer

I am in need of an experienced SAP FICO trainer to provide training sessions onsite. The complexity level prefered is Intermediate. I would like the trainer to have expertise and certifications for the particular module. Proven experiences in delivering high quality training session is also a must. Preference will be given to those who can provide references or samples of their work. Skills in developing and designing training materials and/or resources is also desirable. Looking forward to your bids!