Mid-level Research Scientist Jobs in California

25 open Mid-level Research Scientist jobs in California at 13 companies, including OpenAI, Adobe and Character.ai. Updated daily from company career pages.

OpenAI

OpenAI is an AI research and deployment company that conducts research and implements machine learning.

4 more open roles at OpenAI

Adobe

Adobe is a software company that provides its users with digital marketing and media solutions.

Character.ai

Character.ai provides open-ended conversational applications in which users create characters and converse with them.

Together AI

Together AI is a cloud-based platform designed for constructing open-source generative AI and infrastructure for developing AI models.

Factory

The machine that builds the machine.

Lightning AI

Lightning AI is the first operating system for AI. Build AI models and Lightning Apps (end to end ML systems).

Prime Intellect

Find compute. Train Models. Co-own intelligence.

Nuro

Nuro develops and operates a fleet of electric and autonomous vehicles.

Cognition

Cognition is an applied artificial intelligence lab that focuses on reasoning and code.

Magic

Magic is working on frontier-scale code models to build a coworker, not just a copilot. Come join us: http://magic.dev

Waabi

Waabi is an artificial intelligence (AI) company that commercializes driverless trucks.

DatologyAI

DatologyAI optimize training efficiency, maximize performance and reduce compute costs.

Spellbrush

Spellbrush is an illustration platform that enables artists, illustrators, and animators to complete projects more quickly.

Updated 2026-10-10.