Machine Learning Engineer, Part-Time AI Model Development - Remote (United States)

• $80–$140 per hour• 100% remote• Part-time• Fully flexible schedule Work on the cutting edge of AI, on your own schedule, and get paid for the machine learning expertise you already have. The AI systems everyone is talking about are trained and tested by real machine learning engineers. The teams building them need people who can create realistic model-development tasks, judge how well the models perform, write the solution a professional would produce, and explain exactly where the results fall short. Your technical judgment becomes part of how the next generation of AI models improves. This is that work, done remotely around your current job. What you'll do• Design and refine machine learning models in Python using scikit-learn, TensorFlow or PyTorch• Build data pipelines and preprocessing workflows for model training and inference• Evaluate models, tune hyperparameters and benchmark performance• Document experiments and turn model results into clear technical recommendations Why this is worth your time• Get paid $80–$140 an hour to build real AI skills, on top of your current job• Work directly with frontier AI tools and see how they are built, tested and improved, experience most machine learning engineers will not have for years• Build a career edge for what comes next: AI is reshaping machine learning, and the people who understand it from the inside will lead that change• Fully remote and flexible, no fixed shifts, no commute Who this is for• Strong practical experience delivering machine learning solutions, including model evaluation, feature engineering or data preprocessing• Experience using Python, machine learning frameworks and MongoDB• Professional fluency in English, with clear technical documentation and communication• No experience in AI training work needed. You bring the expertise; we bring the training on the tools. Pay and details• $80–$140 per hour, paid hourly as an independent contractor• Fully flexible schedule; fully remote, United States How to apply1. Apply on OpenTrain (about two minutes; upload your resume).2. Complete a short application on the hiring platform.3. If shortlisted, take a conversational AI interview with technical questions and a coding challenge, whenever it suits you. Most people hear back within days. Ready to put your machine learning expertise to work at the frontier of AI? Apply today. About OpenTrain AIOpenTrain AI connects experienced professionals with paid, part-time AI training work: shaping and improving the AI systems that companies are building right now.