Read "The Phoenix Project" and everything you can get on "Continous Delivery", "Kanban" and "Agile Testing." You'll want to know how to set up your safety nets-

Read "The Phoenix Project" and everything you can get on "Continous Delivery", "Kanban" and "Agile Testing." You'll want to know how to set up your safety nets--even if you are doing 100% of the development by yourself. The Phoenix Project is especially relevant since there are extremely stressful situations the characters experience. When you are "Jr-level" you need all the case history you can get your hands on in order to get experience. Find other people's painful experiences and retrospectives so that you can realize when you are in serious trouble before things get out of control. It is one thing to kind of be good with doing application development or full-stack development, but you'll find there are a lot of other "soft skills" (which is another excellent book to look for) that you will need to practice. In short, you've got a lot of work to do! And be wary of anyone who claims "they've got a year of development work" in the faucet waiting to be poured out--this may just be an enticement to keep you around... cheap.