I will just share a somewhat similar project: <a href="https://github.com/netflix/dispatch">https://github.com/netflix/dispatch</a><p>Also open source, also Python, also incident management, also custom severities (but not as much of custom roles, afaik) :) Has some integrations with slack, but not focused on Slack particularly.<p>Can be a good project to learn from as well :)<p>My relation to it: I only contributed with a couple of pull requests there :)