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.
This is how I typically work with clients.
The focus is, of course, implementation, architectural guidance, spikes and proof of concepts, and adoption of new technologies - all in the Spring ecosystem.
The way I work with teams longer-term, lower-bandwidth.
The focus is similar to the higher-focused engagements, only at a slower, sustained pace rather than a short, focused burst.