OpenTrain AI seeks an intermediate-level, part-time contractor to review AI-generated English content and trainer or QA submissions against detailed rubrics. The role involves evaluating accuracy, clarity, reasoning, grammar, tone, formatting, and instruction-following, while providing written feedback and improving QA workflows. Applicants must be based in the United States and have strong English writing and editing skills plus relevant quality assurance, content review, AI training, annotation, or localization QA experience.