refinement and correction of errors in a working site on Drupal 7. Further maintenance of the site.

a working site for printing photos, etc... you need to fix existing errors and also improve the site with new options. The site works but periodically there are failures. also for development it is necessary to supplement it with new functions.
it is desirable that the performer was from St. Petersburg, as I visit St. Petersburg every two weeks and personal acquaintance for further work is welcome.
the project is quite large and has been working since 2016.