Research Engineer, Agentic Systems

Union Square, New York City · Full-time · Posted Sep 28, 2026

At a glance

Mirage is seeking an ML Engineer to push the boundaries of large language models for multimodal creative tasks.
The role involves developing new approaches for building and extending agentic systems that understand and operate over complex, real-world data, particularly video.
Focus areas include advancing agent capabilities, improving reasoning and control, and enabling new forms of interaction between language models and time-based media.

Design and build end-to-end agentic systems for creative tasks
Develop novel approaches for training and adapting the 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

BS/MS/PhD in CS, ML, or related field
Strong track record building production ML systems or agentic pipelines
Deep understanding of transformers and modern LLM techniques
Experience with fine-tuning, alignment, or post-training methods, especially for adapting models to generate structured outputs or drive tool use
Comfort owning the full stack, from model-level experiments to deployed agent systems
Strong experimental rigor and good taste for what makes agents actually work in practice