+1(514) 937-9445 or Toll-free (Canada & US) +1 (888) 947-9445
You don't need to prove you have that you have educational qualification for your job unless it's a regulated occupation like a pharmacist or doctor. IT occupations aren't regulated.

You can go ahead and select NOC 2173. In your Express Entry profile, you will be asked for "date applicant first became qualified to practice this occupation" you can enter the start date of your first 2173 job.