Machine Learning Researcher

Pinetree Research is a frontier lab focused on transforming general intelligence into reliable labor. They are seeking a Machine Learning Researcher to work on core research problems in agentic systems and multimodal models, with a focus on designing and evaluating novel ML methods for reliable computer use.

Responsibilities:

• Conduct research on agentic ML systems, including planning, reasoning, tool use, and long-horizon execution
• Design and evaluate learning methods for computer use, including vision-language models, multimodal perception, and UI understanding
• Develop benchmarks, datasets, and evaluation frameworks for agent reliability, robustness, and safety
• Experiment with fine-tuning, distillation, and reinforcement learning for real-world task execution
• Analyze agent failures and propose principled fixes grounded in theory and empirical results
• Collaborate closely with engineers to translate research ideas into production systems
• Author internal research reports and, when appropriate, external publications