Writing and B2B digital marketing. No design but this should apply, although subject matter expertise is much more applicable to writers. My clients come from referrals and I’ve built relationships with European software companies by sending an email or LinkedIn message to their marketing person that emphasizes my expertise. The knowledge means they do not have to train me or suffer through me getting up to speed. I have also responded to companies hiring content managers and offering them a pro level talent with experience, without them taking on a hire. Very effective.