Photoshop Poster Design for Online Use

I'm in need of a graphic designer who can create an informative poster using Photoshop. The poster will primarily serve an informational purpose and is intended for online platforms, specifically to be sized as a social media post (1080x1080 px).

Key Requirements:
- Expertise in Adobe Photoshop
- Experience in designing posters
- Understanding of creating informative posters
- Ability to design for social media