Built with Django, of course!
https://gettjalerts.com/ looks online for new jobs in the tech sector, parses them and creates a nice way to filter based on your tastes. Furthermore, you can subscribe to a specific tech stack to get notified when new jobs for that tech stack are posted. Give it a try, would love to know what you think.
Side note: now that I have some good data, trying to play around with the way information is displayed. Here, for instance is a page that lists companies that that hire for Django developers and and pay the most: Tech Job Alerts