Metrics
In recruiting, metrics play a key role. Analyze your every step: track the conversion of job opening applications, analyze the effectiveness of recruiting channels, look for bottlenecks. For example, if you find out that most candidates drop out during the interview stage, while you know that this stage requires a lot of time and costs, you are doing something wrong. Check how many stages you have, whether you have a test assignment (it's unacceptable for the Senior-level tech specialist to complete the test assignment), what questions you ask, etc.