Senior Machine Learning Expert in London

Senior Machine Learning Expert in London

London Full-Time On-site
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Senior Machine Learning Expert (AI Training)

About The Role

What if your deep knowledge of machine learning could directly shape how the world's most advanced AI systems reason, plan, and make decisions? We're looking for Senior Machine Learning Experts to author high-fidelity reasoning traces β€” step-by-step documentation of how an AI should think through complex, real-world problems.

This is a fully remote, flexible contract role built for senior ML practitioners who want to work at the frontier of AI development. Your expertise won't just inform a model β€” it will become part of how it thinks.

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

What You'll Do

  • Author complex, high-fidelity reasoning traces that capture step-by-step planning, tool use, and decision-making for sophisticated technical tasks
  • Design structured traces that demonstrate how an LLM should navigate intricate, real-world scenarios
  • Review and mentor trace quality to ensure optimal clarity, logical flow, and documentation of reasoning
  • Develop data strategies that expose LLMs to diverse and challenging decision-making contexts
  • Contribute directly to training pipelines that make AI models more reliable, capable, and trustworthy

Who You Are

  • Experienced in machine learning, AI research, or a closely related technical field β€” with a strong focus on model reasoning and evaluation
  • Skilled at decomposing complex problems into clear, logical, well-documented steps
  • Familiar with advanced LLM evaluation and training methodologies
  • Able to think both architecturally and granularly β€” seeing the big picture while sweating the details
  • Self-directed and comfortable producing high-quality work independently

Nice to Have

  • Prior experience with data annotation, data quality assurance, or evaluation systems
  • Top-tier Kaggle competition results (Grandmaster or Master level), demonstrating deep understanding of model performance and feature engineering
  • Hands-on experience with RLHF, chain-of-thought prompting, or similar training techniques
  • Background in AI safety, interpretability, or alignment research

Why Join Us

  • Work directly with teams building the most advanced AI models in the world
  • Fully remote and async β€” work when and where it suits you
  • Freelance autonomy with genuinely meaningful, high-impact work
  • Get rare, hands-on exposure to how frontier LLMs are trained and improved
  • Potential for ongoing work and contract extension as new projects launch

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Senior Machine Learning Expert in London employer: Alignerr Corp.

Join a leading global AI research firm that values innovation and collaboration, offering a dynamic remote work environment for an Applied Physicist. With competitive pay, flexible scheduling, and a strong emphasis on employee growth, this role provides the opportunity to engage in cutting-edge projects while contributing to the advancement of AI technology. Experience a supportive culture that encourages creativity and professional development, making it an ideal place for those passionate about physics and AI.

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Contact Details:

Alignerr Corp. Recruitment Team