I would like to hire a consultant at OR to do a formulation of a mathematical optimization problem. Which website is reliable for it?
I can give you my bias opinion because I am freelancer ( I don't know anything about other specific OR websites, linkedin, glassdoor, recruitment agencies or networking methods ) but if I were you my mainly choices were:
- Fiverr.com you can check here for specific OP expert, 194 OP freelancer working there.
- Upwork.com you can check here 239 OP specialist working there.
Also you have to check his portfolio, last work done and reputation there are a lot of scammers and difficult people for both parts working freelance.
You can refer to the list that is on Gurobi's website: https://www.gurobi.com/partners/consulting-services/.