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The Build-Test-Release WG (or BTR): they manage our named releases, which come out each June and December. They particularly need help starting mid-Feb through June and mid-August through December. See the Working groups page to get in touch with them and view their project board.
The frontend working group: they manage the state of our frontend, including both new features and upgrades. They'd love more people to join them!
The DEPR WG: they work on deprecating various aspects of the Open edX platform. Some deprecations are pretty approachable, others are rather complex. Reach out to them to see if they've got anything you might be able to work on.
The Educators WG is developing, migrating, and improving documentation for the Open edX Platform. This is a first task that is non-technical, and open to anyone who builds on the platform. To learn more about helping with this, reach out in the #wg-educators Slack channel or the discussion board and let the group know you are interested.
The other working groups are very interesting (and worth attending!) but don't have a backlog of work.
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