I represent a software company that is in process of building a large software development team. We are picky in who we hire and have really good retention rate (most of the devs have been here for an average of 5-6 years).

We've been spending a lot of developers' and HR time and have a low applications to hire ratio. Here's the process we use:

• HR Interview on phone - Involves asking basic behaviorial and tech questions
• Online test - Involves a 30 minute technical test
• Technical Phone interview - A 60 minute interview by a developer
• Onsite Interview - A 60-90 minute interview by several senior developers

Although this process has been working, we've been spending way too much time on interviews. Any thoughts on how this can be done differently? Our goal is to automate any tasks if possible still retaining the quality of talent.