OpenTrain AI is seeking a remote, part-time Integration Developer and API Specialist to generate prompts and evaluate AI-generated integration plans, payloads, and workflows connecting business systems like CRMs, databases, and SaaS tools via REST APIs and webhooks. Candidates must have hands-on integration experience, text annotation or QA background, and English proficiency at a B2 level or higher. The role is open worldwide, with specific location restrictions including several countries and select U.S. states.