Best track of mine I can think of that can fit your description:http://audiojungle.net/item/corporate-feeling/589156
Hi. These fit certain elements of your description but are two totally different songs. Hopefully one captures the mood you are going after:
Building the Dream – http://audiojungle.net/item/building-the-dream/3363474
The Big Idea – http://audiojungle.net/item/the-big-idea/3321500
dynamic, unconventional, ambitious, optimistic, youthful, definitely a song that builds up and reaches a high point.
and another one: http://audiojungle.net/item/motivational-drum-bass/1746678
I would like to suggest two of my songs for your project:
Crossing the Divide: http://audiojungle.net/item/crossing-the-divide/3316745
Call to Glory: http://audiojungle.net/item/call-to-glory/3353776
Thanks for your consideration and good luck in your search!