Looking for remote AI training or data labeling work open to applicants located in Hong Kong SAR China? These roles can support the preparation and review of examples used by artificial-intelligence systems, with the exact work defined in each posting. OpenTrain is the hiring organization for roles on OpenTrain. Candidates apply through OpenTrain, and OpenTrain may place or refer successful candidates to the client whose project they will support.
Evaluate AI-written business email replies for relevance, accuracy, personalization, and professionalism. Remote, entry-level contract work (20+ hrs/week) reviewing multiple model outputs and writing clear evaluation feedback to improve AI behavior.
Posted Jul 25, 2026
Assess AI-generated reproductions of published ML papers: read papers, inspect code/data/output artifacts, rank reproduction attempts, and provide clear written evaluations. Remote, contractor role for experienced ML researchers — 20+ hrs/week.
Posted Jul 25, 2026
Join OpenTrain as a remote Clinical Medicine AI Evaluation Physician to design and run clinical evaluations that test AI medical reasoning. Flexible contract work (20–30 hrs/week), 1-month engagement with possible extensions; licensed physicians only.
Posted Jul 25, 2026
Join OpenTrain as a contractor to design adversarial red-team workflows, test SaaS/cloud environments, and evaluate security controls for AI training; remote, flexible, 20+ hrs/week, paid $60–$100/hr.
Posted Jul 25, 2026
Design, execute, and document realistic multi-step GitHub-centered engineering workflows for AI training. Remote contractor role, 20+ hrs/week, pay $14–$36 USD/hr; strong software-engineering experience and clear technical writing required.
Posted Jul 25, 2026
Remote contractor to design and document realistic product management and marketing workflows for AI training; 20+ hrs/week, pay $13–$36/hr. Requires hands-on PM or marketing experience, frequent Slack and Google or Microsoft 365 use, and strong process documentation skills.
Posted Jul 25, 2026
Join OpenTrain AI as a Workflow Annotator focused on finance data workflows—work remotely on flexible contracts (20+ hrs/week) and earn $14–$36/hr converting real FP&A and SQL-backed workflows into clear training data and model feedback.
Posted Jul 25, 2026
Design and solve multi-step physics problems and write clear step-by-step solutions that probe large language model reasoning. Fully remote contractor role (20+ hrs/week) requiring advanced physics knowledge, scientific Python skills, and a 3-week commitment with PST overlap.
Posted Jul 24, 2026
Remote contractor role evaluating personalization in a conversational AI using your own account data; work in Russian, 20+ hrs/week at $15/hr. Create multi-turn prompts, compare responses side-by-side, and write clear rationales while following strict data hygiene.
Posted Jul 24, 2026
Experienced private equity attorney to review and annotate complex transactional documents for AI training; remote contract, 20+ hrs/week, pay up to $130/hr. Help teach models by providing precise legal analysis, sample clauses, and risk assessments.
Posted Jul 24, 2026
Capture and annotate gameplay from top-tier AAA games while helping shape the data used to train AI systems. This remote, part-time contractor role offers flexible work at $10–$15 per hour for contributors worldwide.
Posted Jul 24, 2026
Join OpenTrain as a remote, part-time contractor reviewing AI-generated Python solutions and Chinese-language explanations; $27–$50/hr, 20+ hrs/week. Use your Python code-review skills and bilingual fluency to rate, correct, and author reference solutions that improve model behavior.
Posted Jul 24, 2026
Review BIM models and construction drawings using Revit and Navisworks to detect clashes, document root causes, and recommend technical fixes for AI training and model evaluation; remote contract, ~20+ hours/week.
Posted Jul 24, 2026
OpenTrain AI seeks a Spanish-language data annotation expert to label and validate Spanish text with linguistic precision. Remote, contract, part-time role (20+ hrs/week) for contributors with native/near-native Spanish and experience in annotation or linguistic QA.
Posted Jul 24, 2026
Join OpenTrain to record and transcribe Catalan speech from anywhere in Spain, part-time. Help build high-quality Catalan audio datasets, work under flexible hours, and earn $14–17/hr (typical $15/hr) as a contractor.
Posted Jul 23, 2026
Join OpenTrain to create and validate parametric FreeCAD models used to train AI—build libraries of mechanical parts and apply GD&T standards while working 20+ hours/week as a contractor paid $40–$100/hr. Intermediate CAD and mechanical design experience required.
Posted Jul 23, 2026
Evaluate how AI models solve complex software engineering problems by designing reproducible reinforcement learning environments, verification systems, and coding tasks. Remote, part-time contractor work pays $50–$100 per hour for less than 20 hours weekly.
Posted Jul 23, 2026
Annotate images using CVAT and the Segment Anything tool to create polygon outlines for individual objects; entry-level, remote contract work paying $4–$6/hr (typical $5/hr). Start with a short trial and earn more work by meeting speed and accuracy goals.
Posted Jul 22, 2026
Short contract for a bilingual (German/English) reviewer to label and create analytical text scenarios that improve LLM reasoning. One-week, 40 hrs/week remote role with required daily overlap to UTC-8; immediate start.
Posted Jul 22, 2026
Join OpenTrain AI to review, label, and evaluate text that helps fine-tune large language models; this remote, short-term contract requires English and Spanish fluency, strong analytical judgment, and attention to annotation quality.
Posted Jul 22, 2026
Join OpenTrain as a remote Hebrew Language Expert translating, localizing, and QAing Hebrew text for AI training. Contract, part-time role (20+ hrs/week), paid hourly up to $30/hr; native or near-native Hebrew and professional English required.
Posted Jul 22, 2026
Build reproducible reinforcement learning environments that test how AI systems solve real-world coding problems. This remote contractor role offers flexible work of approximately 15 hours per week at $50–$100 per hour.
Posted Jul 22, 2026
Join OpenTrain as a part-time Chinese Voice Coach to evaluate learner recordings, deliver targeted pronunciation feedback, and create lesson materials — remote work under 20 hrs/week with pay up to $65/hr. Native Mandarin or Cantonese speakers with voice-coaching experience encouraged to apply.
Posted Jul 22, 2026
Join OpenTrain to build and evaluate RL training environments that teach AI systems how to operate cloud infrastructure. Remote contractor role, worldwide, 20+ hrs/week (see schedule), paying $60–$130/hr with estimated project earnings of $9,600–$20,800.
Posted Jul 22, 2026
Join OpenTrain to test an Android mobile app: run supplied test cases, find UI/functional bugs, capture screenshots, and submit clear reproduction steps. Fixed-price contract of $130 for part-time remote work under 20 hours/week; entry-level testers welcome.
Posted Jul 21, 2026
Join OpenTrain AI to design rigorous, reproducible scientific-reasoning datasets that evaluate and improve LLMs. 8-week remote contractor role at 20+ hrs/week requiring 3+ years of physics experience and strong quantitative modeling skills.
Posted Jul 21, 2026
Join OpenTrain AI to QA multi-channel, unscripted US English audio and human-verified transcripts—checking fidelity, word-level timestamps, speaker IDs, metadata, and safety. Entry-level contractor role, 20+ hours/week, fully remote and worldwide.
Posted Jul 21, 2026
Join OpenTrain as a Medicinal Chemistry Review Specialist to evaluate and improve medicinal-chemistry datasets used to train advanced AI — contract, part-time, remote, 20+ hrs/week at $60–$80/hr. Provide expert reviews of structures, reactions, SARs, and experimental design.
Posted Jul 21, 2026
Apply advanced neuroscience expertise to annotate, review, and author neuroscience research, case studies, and scenario-based materials used to train generative AI — remote contract, part-time (20+ hrs/week), $60–$80/hr. Prior AI training experience not required.
Posted Jul 21, 2026
Apply your biochemistry expertise to annotate, validate, and refine biochemical datasets and model outputs for life-sciences AI; remote, 20+ hrs/week contract at $60–$80/hr. Join OpenTrain to shape how AI systems learn from scientific data.
Posted Jul 21, 2026
AI training work turns human judgment into useful examples for artificial-intelligence systems. Depending on the individual role, tasks may include labeling images or video, transcribing or recording audio, writing or rating model responses, evaluating search results, translating text, reviewing code, or applying subject-matter knowledge. For applicants located in Hong Kong SAR China, the relevant postings are those that explicitly state they accept applicants in that country. Read each listing to understand the specific assignment.
OpenTrain is the hiring organization for the public roles on OpenTrain, and candidates apply through OpenTrain. If a candidate is successful, OpenTrain may place or refer them to the client whose project they will support. Because client requirements and role details can differ, review the individual live posting before deciding whether to apply.
