Translating WordPress is a great way to give back. If you speak a language other than American English, you can help WordPress by providing translations. Read the “First steps” page to get started, you only need a WordPress.org account.
Translation editors, are responsible for approving suggested translations and ensuring the overall quality of the translations across a locale or for a single project (like a single plugin and theme). Chances are your language already has a translation editor, but translating is a community effort and requires a lot of work.
Having a team of translation editors for each language is highly recommended, so even if your team already has one, you can join in and help translate more projects to your language.
GlotPress is the translation management software that powers the localization of WordPress. It is an open source project and is being maintained and developed by volunteers from the WordPress community.
If are a developer, a designer or a UX expert and would like to help improve GlotPress, visit the GlotPress blog or take a loot at the open issues on GlotPress GitHub.