So, I am sensing that my more junior colleague at NB is in competition with me. He seems to be challenging me on every step I take and on all work I've been handing in. He has carried my role for the last couple of months to bridge the gap while they hired someone (me). I am far more senior than him in my industry. He has maybe 1-2 years of SEO experience. I am thinking that he may have wanted my position and a promotion in the company. I am guessing here, but it is what I am picking up on because he's picking apart my work. Great. Now I have a colleague in competition with me.