I would imagine it is outlined in your contract.
If it is not, then I don't see any harm in asking Human Resources/ your Contracting company (if you are a contractor).Your company may have specific guidelines when applying overtime (needs approval from upper management before performing OT, etc.)
I also looked at your position, a "Services Integration Developer". I am positive that you are entitled to an Overtime. Unless there's something specified in your contract. Again I would simply inquire with the personnel responsible if you're not sure.
Just be sure that when you do file for overtime, make sure your time-tracking is accurate. Always provide a record of your overtime and tasks you were doing.