Senior Machine Learning Expert

Alignerr Corp.; France; Remote; EUR 83,000 - 152,000; Part time

Benefits offered by this job

Fully remote

Asynchronous work

Contract work extension possible

Job summary

Alignerr is seeking a Senior Machine Learning Expert to train cutting-edge large language models and teach them to think step by step, use tools effectively, and make reliable decisions in real-world scenarios. This is a fully remote, hourly contract role built for senior ML practitioners who want to work on technically challenging AI problems.

Join Alignerr to work asynchronously with freelance autonomy on high-impact AI training projects, with ongoing opportunities for contract extension as

Qualifications

• Extensive hands-on ML/AI experience.
• Ability to decompose complex problems into clear, logical steps.
• Familiarity with advanced LLM evaluation and training methodologies.
• Strong written communication of structured reasoning.

Responsibilities

• Author complex, high-fidelity reasoning traces showing how an LLM plans, uses tools, and decides step-by-step.
• Design and document structured reasoning workflows for sophisticated real-world tasks.
• Review and mentor reasoning trace quality for clarity and consistency.
• Develop data strategies to help LLMs navigate multi-step problem solving.
• Apply senior architectural insight to ensure data drives trustworthy model behavior.

Skills

Machine learning

LLM evaluation

Chain-of-thought

Independent work

Job description

Senior Machine Learning Expert (AI Training)

What if your deep expertise in machine learning could directly shape how the next generation of AI systems reason, plan, and solve complex problems? We're looking for Senior Machine Learning Experts to help train cutting-edge large language models — teaching them to think step by step, use tools effectively, and make reliable decisions in real-world scenarios.

About The Role

What if your deep expertise in machine learning could directly shape how the next generation of AI systems reason, plan, and solve complex problems? We're looking for Senior Machine Learning Experts to help train cutting-edge large language models — teaching them to think step by step, use tools effectively, and make reliable decisions in real-world scenarios.

This is a fully remote, flexible contract role built for senior-level ML practitioners who want to work on some of the most technically challenging and consequential AI problems being tackled today.

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

What You'll Do

• Author complex, high-fidelity reasoning traces that capture how an LLM plans, uses tools, and makes decisions step by step
• Design and document structured reasoning workflows for sophisticated real-world technical tasks
• Review and mentor reasoning trace quality to ensure clarity, logical consistency, and optimal decision-making patterns
• Develop data strategies that help LLMs navigate intricate, multi-step problem-solving scenarios
• Apply senior-level architectural insight to ensure the data you produce drives reliable, trustworthy model behaviour

Who You Are

• Experienced machine learning practitioner with significant hands-on expertise in ML, AI, or closely related technical fields
• Skilled at decomposing complex problems into clear, logical, well-documented reasoning steps
• Familiar with advanced LLM evaluation and training methodologies
• Sharp analytical thinker who can bridge deep technical knowledge with structured written communication
• Self-motivated and reliable when working independently and asynchronously

Nice to Have

• Prior experience with data annotation, data quality assurance, or AI evaluation systems
• Top-tier Kaggle competition results (Grandmaster or Master level), demonstrating elite-level model performance and feature engineering expertise
• Familiarity with reasoning trace construction, chain-of-thought prompting, or tool-use training pipelines
• Background in applied AI research or production ML systems

Why Join Us

• Work on some of the most technically advanced AI training projects in the industry alongside leading research labs
• Fully remote and asynchronous — work when and where it suits you
• Freelance autonomy with meaningful, intellectually stimulating work
• Direct impact on how next-generation AI models reason and behave in the real world
• Potential for ongoing work and contract extension as new projects launch