Don't compare yourself to a team of developers who have been there a while. They're already very familiar with the patterns, idioms, operating practices. System

Don't compare yourself to a team of developers who have been there a while. They're already very familiar with the patterns, idioms, operating practices. Systems as well - so they can come with interesting iterations quickly. Over time, if you're paying attention, I'll bet you do as well, and you probably won't notice it when you're there because it's gradual. '5 years in software' is really when you start to get off Of your own hill and start to see all other mountains in the landscape, so it can be bewildering. But it's fun. FYI I've you've been told several times by other firms they like you - and you've been hired by a reputable firm ... then almost assuredly you're decent. The filters are probably not wrong. Also - don't quit. Every time you get a promotion, it's natural to feel like a fish out of water - it's normal to feel like you 'don't know what you're doing' because how could you (?!?) you've never done it before! Just try to do your best, and I'll bet in a few months you feel more comfortable.