Ok, so if... it's very easy to get a job offer in IT department as the offers --a company seeking an employee-- are greater than the available applicants, and that the IT people are receiving dozens of contract offers daily, why would they bother applying some more on your platform? Wouldn't they could just sat nicely in their home and job offers come to them?
Unfortunately I didn't invent the wheel. They already do this thanks to linkedin. The problem is that while LinkedIn makes millions of dollars from their data it collects for free, candidates don't earn anything. We want to reward them with a token that can give them the opportunity to take coaching courses, professional training and much more. Furthermore, we have devised a proprietary algorithm that allows to reduce the match time between supply and demand.
Thenproblem is that while LinkedIn available and open themselves to every professions, you limit yourself to IT sector, and I don't think it works in favor to a "more focused" kind of way due to the fact that --according to you, I have no idea what is programmer's actual probability of employment from it-- the IT people didn't really need the platform to get jobs. In other word, we cam safely assume they use the platform just to "brag" about their past employment.
With LinkedIn, companies could consult their applicant's resume through it, any applicant from any job sector, and employee could polish their CV to make it presentable to any companies interested. So, even if the IT worker didn't interested on looking through and polishing their LinkedIn profile for jobs --since jobs come to them on daily basis, all of them-- companies and the LinkedIn themselves still could reap benefits from other sectors --be it an art worker, auditor, chefs, or whatever job imaginable, even post graduate students have and employs LinkedIn to show their academic history.
While for your case, since you're only for IT sectors and the IT sectors themselves didn't really need to utilize a job seeking platform, it'll make sense if the platform only serve benefits for job giver --the IT couldn't and wouldn't care less, they have it coming in bulk on daily basis-- and why would a job giver, a company, utilize a platform where they have to pay to look at a CV while another platform that is free is readily available for them?