Research Scientist, LLMs

Mirage is an AI-native video platform that intelligently orchestrates production and editing through natural language. Our models leverage contextual awareness to execute the same creative decisions a professional editor would — dramatically improving productivity for experienced teams, while making video creation accessible to anyone.

We’re an interdisciplinary team addressing some of the most difficult technical and creative challenges in generative media. As an early member of our team, you’ll tackle foundational problems that remain largely unsolved across the industry, driving an outsized impact on the future of creative expression.

More about us

Product (Captions by Mirage)

Research (Seeing Voices, technical-white-paper)

Updates (Mirage on X / twitter)

TechCrunch, Forbes AI 50, 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 all of our roles will require you to be in-person at our NYC HQ (located in Union Square)

About the Role

Mirage is seeking a Research Scientist to push the boundaries of large language models for multimodal creative tasks. You’ll develop new approaches for adapting and extending LLMs to understand and operate over complex, real-world data, particularly video

This role focuses on advancing model capabilities, improving reasoning and control, and enabling new forms of interaction between language and time-based media.

Responsibilities

• Develop novel approaches for training and adapting large language models

• Design new objectives, datasets, and fine-tuning strategies

• Explore multimodal reasoning and structured generation

• Run systematic experiments to improve model behavior and reliability

• Design evaluation frameworks for complex, real-world tasks in video analysis

• Analyze failure modes and iterate on model improvements

What makes you a great fit

• MS/PhD in ML, CS, or related field

• Strong track record in LLMs, NLP, video understanding, or multimodal learning

• 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

• Strong experimental rigor and research taste

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

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.

Please note benefits apply to full time employees only.