A long time ago I started off as a backend developer, making custom PHP/MySQL solutions.
Since then I have moved on to accommodate most of my clients' programming needs, so today I'm fairly proficient in the following:
I'm also sharing an office space with a couple of really talented developers/designers (all on Hubstaff), so I also do project management. Trello/Asana/Zeplin/Adobe XD, anything that is needed to finish the project successfully.