Native English proofreader for a monthly batch of marketing copy

Merlin Studio publishes website pages, practical guides and campaign copy in English. Every month you read a batch of that writing the way a careful editor would, and catch what automated checks miss: awkward rhythm, a promise the sentence cannot keep, a claim with no source behind it. Deliverable each month: tracked changes on the agreed batch, a list of any claims that need proof, and a short note on recurring problems. Done means: the batch comes back within the agreed turnaround, every change is explained where it is not obvious, and the running style sheet is up to date. Must have: native-level US English, AP or Chicago style, Google Docs suggestion mode, professional proofreading or copy editing experience. Nice to have: software or marketing copy, SEO basics, working from brand voice guidelines.