Hi, I just read your posting and it sounds like you're looking for a algorithm expert, competitive programmer.
I have participated in ACM ICPC regional contestes several times on my university duration and I have ever awarded silver medal.
I am very familiar with codeforces, HackerRank, codechef, topcoder, etc.
I can help you to solve your problems perfectly in a very short time, I am sure.
If you're interested in me, let's discuss the project in detail by chat.
Best regards