Senior Machine Learning Engineer - AI Data Trainer

Alignerr partners with leading AI research teams to build and train cutting-edge AI models. The Senior Machine Learning Engineer will lead the creation of detailed reasoning traces and mentor others in documenting complex technical tasks to improve model reasoning capabilities.

Responsibilities:

• Lead the authorship of complex, high-fidelity reasoning traces for sophisticated technical tasks
• Mentor and review structured traces to ensure optimal planning and tool-use documentation
• Design data strategies that help LLMs navigate intricate real-world decision-making scenarios

Requirements:

• Significant experience in Machine Learning or related technical fields, with a focus on model reasoning
• Proven ability to decompose complex problems into clear, logical, and documented steps
• Experience with advanced LLM evaluation and training methodologies
• Prior experience with data annotation, data quality, or evaluation systems
• Top-tier Kaggle competition results (e.g., Grandmaster/Master level), demonstrating a deep understanding of model performance and feature engineering