Remote Senior ML Expert - LLM Reasoning & Training Data

Alignerr; Cambridge; On-site; GBP 83,000 - 179,000; Full time

Job summary

Alignerr is seeking a Senior Machine Learning Expert to influence how next-generation AI systems reason, plan, and decide. This remote, hourly role focuses on building foundational training data for large language models and requires senior-level ML thinking and autonomous work habits.

You will craft high‑quality reasoning traces, design multi-step decision data, and review others’ contributions to ensure robust planning and tool use. Flexible hours and long-term freelance opportunities exist.

Qualifications

• Experienced machine learning professional with a strong foundation in model reasoning, training pipelines, or AI systems design.
• Skilled at decomposing complex technical problems into clear, logical, well-documented steps.
• Familiar with how large language models are trained, evaluated, and improved.
• Detail-oriented — you notice when a reasoning chain breaks down or when a step is unclear.

Responsibilities

• Author complex, high-fidelity reasoning traces that capture how an LLM should plan, use tools, and make decisions to solve real technical tasks.
• Design structured, step-by-step decision-making data that trains AI models to reason more reliably in production environments.
• Review and refine reasoning traces contributed by others, ensuring logical coherence, planning quality, and tool-use accuracy.
• Develop data strategies for navigating intricate, multi-step problem scenarios that push model capabilities forward.
• Apply senior-level architectural insight to validate that traces reflect sound, expert-level machine learning thinking.

Skills

ML expertise

Reasoning

Independent work

Job description

Alignerr is seeking a Senior Machine Learning Expert to influence how next-generation AI systems reason, plan, and decide. This remote, hourly role focuses on building foundational training data for large language models and requires senior-level ML thinking and autonomous work habits.

You will craft high‑quality reasoning traces, design multi-step decision data, and review others’ contributions to ensure robust planning and tool use. Flexible hours and long-term freelance opportunities exist.