Hi,
I am new on platform but I'm not new in Drupal. I had a lot of these requirements in the past 5 years and I still have some of those, mainly working in D7 on module development, configuration, theming support, data migrations, Drupal commerce, external APIs integrations, security updates, etc. I can send you some of the projects handled by me if it's needed.
In June I am not available for more than 15h/week as I already have scheduled project to finish. Later, if it's needed and it's suitable for both sides, we can arrange different engagement.
My crucial advantages are responsibility, strong logic skills, experience with small and medium size projects (so speed of work matters), good communication (fast replies, structured way of writing/reading documentation and tasks), experience in management (I can follow up part of management if it's needed), experience to work in team (for last 3 and half years I'm working remotely with team in Belgium).
Everything is negotiable so I'm looking forward for your reply to proceed further.
Thanks,
Ratomir