Thanks for showing interest in Test Collab and sharing your query.
Yes, you can get the Cucumber tests triggered using the test automation feature offered by Test Collab. The integration is very well possible with SaaS instance as well.
You need to install a tool called remote executor on your machine and then configure it in Test Collab, with this you can get your Cucumber scripts triggered whenever a test execution is assigned to a remote executor.
Tests would run on the machine where test automation tool (Cucumber in your case) is.
You may like to refer our online user guide articles listed at http://support.testcollab.com/index.php?pg=kb.chapter&id=45 and a screencast at http://testcollab.com/blog/screencast-test-automation-with-test-collab - as these explain the test case automation tools integration process.
I hope this helps you in serving your purpose.