Thinking Machines Lab

Model Behavior Model Designer (AI)

In short

This role shapes how large language models behave and collaborate with people, covering interaction design, data collection, evaluation definition, and feedback analysis across multimodal interfaces. The employer is an AI startup, and the work demands skills in model behavior design, prompting, model evaluation, UX research, and quantitative analysis. Candidates must manage multiple improvement projects on tight timelines, working onsite in the United States.

About the Role
You will work with researchers to understand and shape model behavior. You will design model collaboration and interaction defaults, partner on live and multimodal interfaces, collect high-quality data, define evaluations, analyze feedback and quantitative insights, and manage projects that improve how models collaborate with people.
Requirements
•Written communication
•User research across varied populations, domains, or cultures
•Experience in product design, UX research, content design, conversation design, or model behavior work
•Model behavior design
•Large language model experience
•Prompting
•Model evaluation
•Experiment design
•Quantitative analysis
•A/B testing
•Product design
•UX research
Responsibilities
•Work with researchers to understand, predict, and shape model behavior
•Design model collaboration, initiative, oversight, and feedback interactions
•Build adaptable interaction defaults
•Partner on live and multimodal interfaces
•Collect high-quality data
•Define evaluations for human-model collaboration
•Identify improvements using feedback, quantitative insight, and research priorities
•Manage multiple projects on tight timelines
Benefits
•Health benefits
•Dental benefits
•Vision benefits
•Unlimited PTO
•Paid parental leave
•Relocation support

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