Data Scientist – AI Model Training & Evaluation
About The RoleWe're looking for data scientists based in Germany to help train, evaluate, and improve next-generation AI systems. Your quantitative expertise will directly influence how state-of-the-art AI models reason, analyze, and communicate — making a real and lasting impact on the future of artificial intelligence.Organization: AlignerrType: Hourly ContractLocation: RemoteCommitment: 10–40 hours/weekWhat You'll DoEvaluate AI model outputs for accuracy, reasoning quality, and statistical soundnessDesign and apply data-driven evaluation criteria and scoring rubricsAnalyze patterns in AI-generated responses to identify systematic errors or biasesCreate high-quality training data including prompts, solutions, and annotations in your areas of expertiseProvide structured, detailed feedback to improve model performance across data science and analytical tasksReview AI-generated code, visualizations, and statistical analyses for correctnessWork independently and asynchronously on your own scheduleWho You AreDegree in Data Science, Statistics, Computer Science, Mathematics, or a related quantitative field (MS or PhD preferred)Strong foundation in statistics, probability, and machine learning conceptsProficient in Python, R, SQL, or similar data analysis toolsExperienced with data wrangling, exploratory data analysis, and model evaluationExcellent analytical thinking with sharp attention to detailStrong written communication in English — able to explain complex technical concepts clearly and simplySelf-motivated and comfortable working independentlyNice to HaveExperience with deep learning frameworks such as PyTorch or TensorFlowFamiliarity with NLP, large language models, or AI evaluation workflowsPublished research or industry experience in applied machine learningBackground in A/B testing, causal inference, or experimental designWhy Join UsWork on cutting-edge AI projects shaping the future of technologyCollaborate with top research labs and AI teams around the worldFully remote and flexible — work on your own schedule, on your termsGain rare, hands-on exposure to how state-of-the-art LLMs are trained and evaluatedBe part of a growing community of expert contributors making AI smarter and more reliablePotential for ongoing work and long-term contract extension