Research Scientist Intern, Integrity AI (PhD)

Meta was built to help people connect and share, and over the last decade our tools have played a critical part in changing how people around the world communicate with one another. With over a billion people using the service and more than fifty offices around the globe, a career at Meta offers countless ways to make an impact in a fast growing organization. Meta is seeking Research Interns to join the Entity and Actor Integrity team within Facebook Integrity.

We are the applied ML team behind enforcement on complex entities and the actors who run them: groups, pages, events and creators. Our models decide when a group spreading severe harm should be taken down, when a creator is faking engagement, when a page is impersonating someone, and when an enforcement should be reversed on appeal, across a platform used by billions of people. Our work has moved from per-post classifiers to LLM-based systems that reason over an entire entity (its content, members, admins and history) and apply written policy the way an expert would.

The open research problems are about making that judgment efficient, reliable and continually improving: distilling large reasoning models into small, fast models and pushing the boundaries of decision-style models like Jev keeping one shared multi-harm model improving without regressing other harms learning from scarce expert labels calibrating confidence so the system knows when to defer measuring quality when the model is better than most human reviewers Interns own one focused research problem end to end, from framing to experiments to publication, under the guidance of our research scientists and machine learning engineers.