Research Engineer, Agentic Systems

Mirage

$125K — $150K *
Enterprise Technology
Less than 5 years of experience
Job Overview by Ladders

Qualifications

  • BS/MS/PhD in Computer Science, Machine Learning, or related field
  • Proven experience in building production ML systems or agentic pipelines
  • Solid grasp of transformers and modern large language model techniques
  • Familiarity with fine-tuning, alignment, or post-training methods
  • Ability to manage the full stack from experimentation to deployment
  • A rigorous approach to testing and a strong intuition for effective agent performance

Responsibilities

  • Design and construct end-to-end systems for creative tasks
  • Develop innovative methods for training and adapting large language models
  • Create new objectives and datasets to enhance agent functionality
  • Investigate multimodal reasoning and creative control techniques
  • Conduct systematic experiments to assess and refine agent performance
  • Establish evaluation frameworks for agent workflows in video analysis and editing
  • Examine and improve failure patterns within the agent lifecycle

Benefits

  • Comprehensive medical, dental, and vision plans
  • 401K with employer match
  • Commuter Benefits
  • Catered lunch multiple days a week
  • Dinner stipend for late work hours
  • Grubhub subscription
  • Health & Wellness Perks
  • Team offsites and monthly team events
  • Generous PTO policy
Full Job Description
About the RoleMirage 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.

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