Machine Learning Engineer

Alignerr Corp.; España; A distancia; EUR 55.000 - 165.000; A tiempo parcial

Descripción de la vacante

Alignerr is seeking a Machine Learning Engineer (AI Data Trainer) for a fully remote, hourly contract role. You will craft precise reasoning logs that demonstrate how to approach complex ML problems, including tool usage and decision paths, to train state-of-the-art models.

The ideal candidate has a strong ML or software engineering background and can articulate the reasoning process clearly, step by step, while working independently in a flexible, globally distributed team.

Formación

• Experience in ML or software engineering.
• Ability to articulate complex reasoning step-by-step.
• Self-directed with asynchronous work.

Responsabilidades

• Construct precise, well-structured reasoning logs showing strategy, tool use, and decisions at each step.
• Demonstrate expert approaches to ML and engineering challenges to generate useful training data.
• Create annotated workflows illustrating tool interactions from framing to solution.
• Review AI-generated reasoning sequences to identify gaps and improvements.
• Produce high-quality training datasets to improve LLM performance on real tasks.

Conocimientos

Machine Learning

Software Engineering

Problem-Solving

Independent Work

Attention to Detail

Educación

Master's Degree or PhD in ML/CS

Herramientas

LLM Prompts

Data Annotation Tools

Descripción del empleo

Machine Learning Engineer (AI Data Trainer)

About The Role

What if your technical expertise could directly influence how the world's most advanced AI systems learn to reason, plan, and solve problems? We're looking for Machine Learning Engineers to help train cutting-edge AI models by demonstrating expert-level problem-solving — step by step, tool by tool, decision by decision.

Machine Learning Engineer (AI Data Trainer)

About The Role

What if your technical expertise could directly influence how the world's most advanced AI systems learn to reason, plan, and solve problems? We're looking for Machine Learning Engineers to help train cutting-edge AI models by demonstrating expert-level problem-solving — step by step, tool by tool, decision by decision. This isn't a typical ML engineering role. You'll be working at the frontier of AI development, producing the high-quality reasoning data that teaches large language models how to think like an expert. Your work will have a direct, lasting impact on how AI handles real-world technical challenges. This is a fully remote, flexible contract role built for experienced technical professionals who want to contribute to something genuinely significant.

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

What You'll Do

• Construct precise, well-structured reasoning logs that walk through complex technical problems — capturing your strategy, tool use, and decision‑making at each step
• Demonstrate how an expert approaches sophisticated ML and engineering challenges, producing training data that shows AI models how to reason consistently and reliably
• Generate annotated workflows that illustrate proficient tool interaction, from problem framing through to solution execution
• Review and critically evaluate AI-generated reasoning sequences, identifying gaps, errors, and opportunities for improvement
• Produce high-quality training datasets that directly improve LLM performance on real-world technical tasks

Who You Are

• Professional background in Machine Learning, Software Engineering, or a closely related technical discipline
• Able to clearly articulate complex reasoning processes — you can explain not just what you did, but why, step by step
• Strong critical thinker with the ability to evaluate and refine AI-generated problem‑solving approaches
• Comfortable working independently and asynchronously with minimal supervision
• Detail‑oriented and methodical — you care about precision and consistency

Nice to Have

• Master's Degree or PhD in Machine Learning, Computer Science, or a related technical field
• Prior experience with data annotation, data quality assurance, or AI evaluation systems
• Familiarity with LLMs, prompt engineering, or AI reasoning frameworks
• Experience documenting technical workflows or writing technical specifications

Why Join Us

• Work directly with leading AI research labs on projects shaping the next generation of AI
• Fully remote and flexible — structure your hours around your life, not the other way around
• Freelance autonomy: choose your own pace, work asynchronously, and collaborate globally
• Gain deep, hands‑on exposure to how frontier LLMs are built and trained
• Contribute to work that genuinely matters — your expertise helps make AI smarter and more reliable for everyone
• Potential for ongoing work and contract extension as new projects launch