Research Engineer, Agentic Systems
- Location
- Union Square, New York City · On-site
- Job type
- Full-time
- Level
- Senior
- Education
- Bachelor's degree
- Listed
- 30 days ago
Skills & highlights for this role
- multimodal LLMs
- agentic systems
- fine-tuning
- transformers
Also useful
- video models
- tool use
- structured generation
Stated benefits & perks
- Medical
- Dental
- Vision
- 401k match
- Pto
About the Role
Mirage is seeking an ML Engineer to push the boundaries of large language models for multimodal creative tasks. You'll develop new approaches for building and extending agentic systems that understand and operate over complex, real-world data, particularly video.
This role focuses on advancing agent capabilities, improving reasoning and control, and enabling new forms of interaction between language models and time-based media.
Responsibilities
- 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
What makes you a great fit
- 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
Benefits
- Comprehensive medical, dental, and vision plans
- 401K with employer match
- Commuter Benefits
- Catered lunch multiple days per week
- Dinner stipend every night if you're working late and want a bite!
- Grubhub subscription
- Health & Wellness Perks
- Multiple team offsites per year with team events every month
- Generous PTO policy
Please note benefits apply to full time employees only.
About Mirage
Mirage is an AI video company focused on making creation dramatically easier. Our team tackles some of the hardest creative and technical challenges in generative media.
We get to rethink how people collaborate with AI that can actually do creative work with them-defining entirely new interaction paradigms for AI-native video tools. We make that possible by building multimodal agents that turn creative direction into edits, rendering engines that composite multiple layers of video and graphics, and generative video models trained from the ground up that create new media when needed.
All of this comes together in Captions, our creative workspace for generating, editing, and designing video. The technology behind Captions is now available more broadly: Tesseract gives any AI agent native video-editing capabilities, while developers can integrate our models into their own products through APIs.
- Explore our work
- Captions - Our flagship creative workspace
- Tesseract - Our professional video engine for AI agents
- Research - The foundation models we build in-house
- Updates - The latest from Mirage
- TechCrunch Forbes Fast Company - Press
- Our Investors
We’re very fortunate to have some the best investors and entrepreneurs backing us, including Index Ventures, Kleiner Perkins, Sequoia Capital, Andreessen Horowitz, General Catalyst, Uncommon Projects, Kevin Systrom, Mike Krieger, Lenny Rachitsky, Antoine Martin, Julie Zhuo, Ben Rubin, Jaren Glover, SVAngel, 20VC, Ludlow Ventures, Chapter One, and more.
Please note that most of our roles will require you to be in-person at our NYC HQ (located in Union Square)
Equal opportunity and legal notices
Captions provides equal employment opportunities to all employees and applicants for employment and prohibits discrimination and harassment of any type without regard to race, color, religion, age, sex, national origin, disability status, genetics, protected veteran status, sexual orientation, gender identity or expression, or any other characteristic protected by federal, state or local laws.
From Mirage's careers page, first listed on Rolev.ai on October 10, 2026. Rolev.ai is not the employer.
How Rolev.ai helps with this application
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Common questions
Where is the Research Engineer, Agentic Systems job at Mirage located?
This Research Engineer, Agentic Systems position at Mirage is located in Union Square, New York City (On-site). Always check Mirage's application page for specific state eligibility or relocation policies.
What qualifications are required for Research Engineer, Agentic Systems at Mirage?
For the Research Engineer, Agentic Systems role, Mirage highlights a bachelor's degree; experience with multimodal LLMs, agentic systems, fine-tuning, transformers. Rolev.ai can score your existing resume against these requirements and show any skill gaps before you apply.
How do I apply for the Research Engineer, Agentic Systems position at Mirage?
This listing links directly to Mirage's Ashby application page. You can apply directly on Mirage's site, or use Rolev.ai to check your resume fit, generate a zero-hallucination tailored resume and cover letter for this posting, and autofill the Ashby application form in 1 click with the Rolev.ai Chrome extension. You always review the form and press Submit yourself.