ph3Machine Learning Engineer (AI Data Trainer) /h3 h3About The Role /h3 pWhat 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. /p h3Machine Learning Engineer (AI Data Trainer) /h3 h3About The Role /h3 pWhat 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. /p pThis 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. /p pThis is a fully remote, versátil contract role built for experienced technical professionals who want to contribute to something genuinely significant. /p ul liOrganization: Alignerr /li liType: Hourly Contract /li liLocation: Remote /li liCommitment: 10–40 hours/week /li /ul h3What You'll Do /h3 ul liConstruct precise, well-structured reasoning logs that walk through complex technical problems — capturing your strategy, tool use, and decision‑making at each step /li liDemonstrate how an expert approaches sophisticated ML and engineering challenges, producing training data that shows AI models how to reason consistently and reliably /li liGenerate annotated workflows that illustrate proficient tool interaction,



from problem framing through to solution execution /li liReview and critically evaluate AI‑generated reasoning sequences, identifying gaps, errors, and opportunities for improvement /li liProduce high‑quality training datasets that directly improve LLM performance on real‑world technical tasks /li /ul h3Who You Are /h3 ul liProfessional background in Machine Learning, Software Engineering, or a closely related technical discipline /li liAble to clearly articulate complex reasoning processes — you can explain not just what you did, but why, step by step /li liStrong critical thinker with the ability to evaluate and refine AI‑generated problem‑solving approaches /li liComfortable working independently and asynchronously with minimal supervision /li liDetail‑oriented and methodical — you care about precision and consistency /li /ul h3Nice to Have /h3 ul liMaster's Degree or PhD in Machine Learning, Computer Science, or a related technical field /li liPrior experience with data annotation, data quality assurance, or AI evaluation systems /li liFamiliarity with LLMs, prompt engineering, or AI reasoning frameworks /li liExperience documenting technical workflows or writing technical specifications /li /ul h3Why Join Us /h3 ul liWork directly with leading AI research labs on projects shaping the next generation of AI /li liFully remote and flexible — structure your hours around your life, not the other way around /li liFreelance autonomy: choose your own pace, work asynchronously, and collaborate globally /li liGain deep, hands‑on exposure to how frontier LLMs are built and trained /li liContribute to work that genuinely matters — your expertise helps make AI smarter and more reliable for everyone /li liPotential for ongoing work and contract extension as new projects launch /li /ul /p #J-18808-Ljbffr

📌 Machine Learning Engineer (España)
🏢 Alignerr
📍 España