Hey there.
I am a theoretical physicist, and, thus, I am of course familiar with quantum mechanics and special relativity.
I don't know exactly what you need, so, I'd just say some things that I am familiar with. For instance, the invariance properties of special relativity, minkowski space, symmetry generators, lorentz groups, etc. As for quantum mechanics, also includes perturbation theory, formal hilbert spaces, etc. Just name what you want! =). If it is teaching, I always try to teach in a simple and easy way, as to provide clarity and understanding of why things are the way they are.
I am also familiar with some relativistic theories of quantum mechanics.
I'll wait your contact.