Senior Machine Learning Expert

About The Role

What if your deep knowledge of machine learning could directly influence how the next generation of AI systems reason, plan, and make decisions? We're looking for Senior Machine Learning Experts to lead the creation of high-fidelity reasoning traces — structured, expert-crafted data that teaches LLMs how to think through complex, real-world problems step by step.

This is a fully remote, flexible contract role built for senior ML practitioners who understand model behavior at a deep level and want to apply that expertise to work that genuinely matters.

• Organization: Alignerr
• Type: Hourly Contract
• Location: Remote
• Commitment: 10–40 hours/week

• Author complex, high-fidelity reasoning traces that capture how an LLM should plan, use tools, and make decisions across sophisticated technical tasks
• Design and document structured decision-making flows that reflect real-world problem-solving at a senior engineering level
• Review and improve existing traces to ensure logical coherence, optimal planning, and accurate tool-use documentation
• Develop data strategies that help AI models navigate intricate, multi-step scenarios with greater reliability
• Apply architectural-level insights to ensure the reasoning data you produce drives meaningful improvements in model behavior

• Experienced machine learning practitioner with deep familiarity with LLMs, model reasoning, and training methodologies
• Skilled at decomposing complex technical problems into clear, structured, and logical steps
• Comfortable working with advanced evaluation frameworks and understanding how training data shapes model outputs
• Detail-oriented and rigorous — you hold your work to a high standard and it shows
• Self-directed and productive working independently in an async, remote environment

• Prior experience with data annotation, data quality assurance, or AI evaluation systems
• Top-tier Kaggle competition results (Grandmaster or Master level), demonstrating elite-level understanding of model performance and feature engineering
• Familiarity with agent-based LLM architectures or tool-augmented reasoning systems
• Background in AI safety, alignment research, or RLHF pipelines

• Work at the frontier of AI — your contributions directly shape how cutting-edge LLMs reason and behave
• Collaborate with world-leading AI research teams and labs on meaningful, high-impact projects
• Fully remote and async — work on your schedule, from anywhere
• Freelance autonomy with access to some of the most intellectually stimulating AI challenges available today
• Potential for ongoing work and contract extension as new projects launch