STEM-OPT Approval for Timed Employment

[J12]

Hi,

I am on my initial OPT and I will apply next month for a STEM OPT extension. I recently received a 12-month employment offer from a company with the option of converting it to a permanent position based on satisfactory performance. 

When I checked the requirements for STEM OPT jobs, I compared them with my offer and my offer meets these requirements;

- The employer is on E-Verify

- I will be working directly for the employer 

- Job is related to my degree

- It is a fulltime job with > 20 hours per week

However, I don't know if time-based employments like this are accepted under STEM OPT. Are they accepted under STEM OPT?

Thank you very much in advance.