Remote ML Engineer — AI Reasoning Data Trainer

Alignerr Corp.; España; Remote; EUR 49,000 - 86,000; Full time

Job summary

Alignerr is seeking a Machine Learning Engineer (AI Data Trainer) to help train advanced AI models by producing expert‑level, step‑by‑step reasoning data. The role is fully remote on an hourly contract, offering 10–40 hours per week and flexible scheduling.

You will craft precise reasoning logs and annotated workflows, demonstrating how an expert tackles complex ML and engineering challenges. This is a freelance, asynchronous role with potential for ongoing collaboration.

Qualifications

• Proven background in ML, software engineering, or related technical discipline.
• Ability to articulate complex reasoning and decisions step-by-step.
• Strong independent work and self‑management in asynchronous settings.

Responsibilities

• Construct precise, well‑structured reasoning logs detailing strategy, tools, and decisions at each step.
• Demonstrate expert approaches to ML and engineering challenges to train models.
• Generate annotated workflows showing tool interaction from framing to solution.
• Review AI‑generated reasoning sequences, identify gaps and opportunities for improvement.
• Produce high‑quality training data to improve LLM performance on real‑world tasks.

Skills

Machine Learning

Software Engineering

Analytical thinking

Independent work

Attention to detail

Education

Master's degree or PhD in ML/CS

Job description

Alignerr is seeking a Machine Learning Engineer (AI Data Trainer) to help train advanced AI models by producing expert‑level, step‑by‑step reasoning data. The role is fully remote on an hourly contract, offering 10–40 hours per week and flexible scheduling.

You will craft precise reasoning logs and annotated workflows, demonstrating how an expert tackles complex ML and engineering challenges. This is a freelance, asynchronous role with potential for ongoing collaboration.