My day at work

I had a long day yesterday at （the）Body Shop area （is this the company name), where I am working  (present simple as it is a fact and it is not something that is just happening in this very moment, it is permanent). as a group leader. The whole process was troublesome with troubles due to an unstable automatic (automation  perhaps) process , almost all of the maintenance operators were totally lost trying to figure out the problem and had the managers together watching the repairs, in my opinion, this just increases the pressure on them, at the end of an exhausting and hectic day, the problem was rectified and fortunately, it didn't turn out to be very serious. After  to get the process got back to normal, this did I faced me an extreme challenge to get back to the great performance to process. (this part not really neessary as you already explained it at the start of the sentence.)
I worked hard the rest of the day until getting an excellent outcome back. I had the pleasure of celebrating with the team (the as it is specifice, your team)  and I am really proud of them.