You're a good fit here if you're either already doing OAuth with Spring Security, or you're starting to try it out but the implementation hasn't reached production yet. 

Either way, my focus here is getting OAuth fully implemented into your system, and making sure your team is able to handle working on going forward. 

I typically work with teams on code reviews, architectural guidance, spikes and proof of concepts, and adoption of new technologies - all in the Spring ecosystem

Generally, in a longer-term engagement, I help the team in an ongoing advisory capacity. 

The focus is similar to the 1-2 week engagement, only at a slower pace rather than a short, focused burst.