Behavioral Experiment Builder

I'm looking for a developer to create an experiment builder tailored for behavioral experiments. The tool should have a user-friendly drag-and-drop interface, making it easy to set up complex experiments without needing extensive programming knowledge.

Key Requirements:
- Drag-and-drop interface for experiment setup
- Capability to incorporate reaction time measurements

Ideal Skills and Experience:
- Experience in developing user-friendly interfaces
- Background in experimental psychology or related fields
- Familiarity with data collection methods, especially reaction time

Please provide examples of similar projects you've completed.