Salary Details for a Big Data Engineer at

Hi all need some advice. I'm looking to ask for a raise but I'm not to sure if it's the right time. Here's a little back story, I started working here exactly 1 year ago and was promoted from Mechanical Tech to Mechanical Designer in 6 months but with no pay raise for the promotion. I did get the annual promotion when the new year started so my initial salary increased 4 percent. Since I started work has been relatively slow and I've really only completed one large project with a bunch of