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Research Engineer, Agentic Systems

Captions - New York, NY, USA - In-office - posted 2026-08-02

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Mirage is an AI-native video platform that uses natural language to intelligently orchestrate production and editing, enabling professional editors to work faster and making video creation accessible to broader audiences. The company has raised $75M from top-tier investors including Sequoia, Andreessen Horowitz, Kleiner Perkins, and Index Ventures, and was recognized on Forbes' AI 50 list. As a Research Engineer focused on Agentic Systems, you will develop foundational approaches for building and extending agentic systems that understand and operate over complex, real-world video data. This is a core technical role addressing some of the most difficult unsolved problems in generative media and creative AI. Key responsibilities include: - Design and build end-to-end agentic systems for creative tasks - Develop novel approaches for training and adapting large language models that power these agents - Design new objectives, datasets, and fine-tuning strategies to improve agent behavior and reliability - Explore multimodal reasoning and structured generation for creative control - Run systematic experiments to evaluate and improve agent performance in real-world tasks - Design evaluation frameworks for agentic workflows in video analysis and editing - Analyze failure modes across the full agent loop (planning, tool use, execution) and iterate on improvements Ideal candidates have a BS/MS/PhD in CS, ML, or related field, with a strong track record building production ML systems or agentic pipelines. Deep understanding of transformers and modern LLM techniques is essential. Experience with fine-tuning, alignment, or post-training methods—especially for adapting models to generate structured outputs or drive tool use—is highly valued. You should be comfortable owning the full stack from model-level experiments to deployed agent systems, with strong experimental rigor and practical intuition for what makes agents work in production. This is a full-time, in-person role based at the company's NYC headquarters in Union Square. The role offers comprehensive benefits including medical, dental, and vision coverage, 401K matching, commuter benefits, catered meals, and generous PTO.

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