The 2025 Tidy Dev Day will be on September 19th! We’ll gather after posit::conf near the conference venue (see the link to the event page at the bottom).
Tidy Dev Day (TDD) is an event where developers and open source contributors meet to collaboratively solve issues. You can hone your software engineering skills or work on your first contribution. We will have a slate of existing issues that you can work on with or without the assistance of our developers.
Here’s how Laura Acion described the 2019 event:
I wish there were more of these R-related dev days. Developing events that are friendly, diverse, and safe to advance not only the tidyverse. I see no downsides. Kudos to the organizers.
Plus…

Who should attend
You don’t have to have an extensive development background or experience solving issues, or making pull requests. You do need a GitHub account, and some git experience.
Leading up to TDD, we will hold (optional) virtual “office hours” for TDD participants to help you with your Git workflow so that you can stroll into TDD confident that your R, Git, GitHub, and IDE are set up in the most ideal way possible to work in harmony on your laptop.
How to sign up
There is a token $10 cost for the day; we provide the venue, snacks, lunch, and a barista. If cost is an issue, please email hadley@posit.co and we’ll work that out. We only charge a small fee to encourage people to show up for the day.
Note: by using this link, you agree to Posit’s Privacy Policy, available at https://posit.co/about/privacy-policy/. You also consent to using https://lu.ma/ for the purposes of processing your event attendance fees.
Previous Tidy Dev Days have sold out quickly, so don’t wait!