Salesforce support

We are looking for a Salesforce administrator who can:
- provide first level support to 500+ users
- provide training
- update the user manual
- write and distribute release notes
- configure (point&click) the system, respecting the release process (scratchOrg>UAT>Production)
- create reports and dashboards on demand
All activities are related to Sales Cloud and Salesforce Communities
We require an availability of at least 3 full days per week, during working hours (no weekends).