Member of Technical Staff - ML Scientist, Japanese Multimodal

The role

You will improve the capabilities and behavior of Liquid Foundation Models for Japan and the global market. You will own the full experimental loop including identifying model weaknesses, developing data and training strategies, and running controlled experiments.

What you will do

• Design and execute post-training strategies for language and multimodal models
• Build and curate high-quality training data using human, synthetic, and model-generated signals
• Develop evaluations that expose capability and reliability gaps
• Conduct systematic error analysis to improve data mixtures and model behavior
• Run controlled experiments and ablations
• Develop reliable, scalable training and evaluation pipelines
• Contribute methods, tooling, datasets, and findings to accelerate post-training work

Required qualifications

• Hands-on experience post-training modern language or multimodal models
• Strong understanding of machine learning fundamentals and current post-training and RL methods
• Solid engineering skills and proficiency with the open-source ML ecosystem
• Experience designing and running rigorous experiments
• Experience building, curating, or assessing training and evaluation data at a meaningful scale
• Ability to turn research ideas into reliable implementations and measurable model improvements
• Proficiency in English

Nice to have

• Experience leveraging agents to amplify your own work
• Experience with preference optimization or reinforcement learning methods for foundation models
• Experience post-training multimodal models involving text, vision, or audio
• Experience developing synthetic data pipelines, reward models, verifiers, or model-based evaluations
• A track record of producing useful research artifacts
• Reading proficiency in Japanese

Benefits

• High-impact model work
• Direct access to core teams
• Ownership in a growing market
• Supportive & growth-driven culture
• Primarily remote work
• Flexible working hours
• Unlimited paid time off
• Competitive salary
• Equity in a unicorn-stage company
• Standard benefits for employees in Japan

About the company

Spun out of MIT CSAIL, liquid-ai builds general-purpose AI systems that run efficiently across deployment targets. They partner with enterprises across consumer electronics, automotive, life sciences, and financial services.