At a career crossroads, seeking advice

I'm just wondering what resources IT contractors would use to find opportunities in the Public Sector?
I don't know, but I wonder might they hire via agencies. Where I work in the private sector we only recruit contractors via two approved agencies. That approach eliminates a lot of the administration and overhead where you're dealing with large numbers, the Public Sector would be dealing in even bigger numbers.
 
I'm just wondering what resources IT contractors would use to find opportunities in the Public Sector? I know of Unijobs (https://unijobs.ie/find-a-job) and PFH (https://www.pfh.ie/careers/) but I'm wondering if there are others that I'm unaware of?

Most contracts in the public sector are offered through the etenders website


They’re normally of a scale that would be more appropriate for companies rather than individuals.