Pontoon Add-on started as my personal project, but it's dedicated to the community of Mozilla localizers and I am open to any inputs or contributions.
For Mozilla localizers the easiest way to get involved is to use Pontoon Add-on, report bugs, request features or send some short feedback to Mozilla Discourse.
For those, who prefer coding, you can find a technical overview of how Pontoon Add-on work inside on the wiki. After reading the technical overview, feel free to pick a task and leave a comment you would like to work on it. In the meantime, before I get back to you, here are few tips to help you start.
Before you start making any changes, make sure you can build the add-on on your machine. You will find the required tools and hints here. If you are in doubt what to do, do not hesitate to write a comment in the task you are working and ask for help.
When creating and pushing your commits, please write a meaningful commit message, what has been changed. Please also run make build again to ensure your code is well formatted and without obvious errors. When nothing is red, create a pull request.