Discord is hiring a Senior Senior ML Engineer — discovery & safety on the Discovery ML team (Hybrid · San Francisco, United States). This is a hands-on role in search & recommendations—not a generic “AI enthusiast” post.
You will own ranking, retrieval, and online experimentation end to end: problem framing, offline evaluation, safe rollout, and iteration from production signals. Success is measured with clear metrics (quality, latency, cost, or business KPIs)—not slide decks alone.
Discord connects hundreds of millions of users in communities. Discovery ML powers recommendations, search, and safety classifiers.
Senior ML Engineer (SF): ranking models, embeddings, and GenAI moderation assist with strict latency on mobile clients.
Hybrid SF Dogpatch — equity and flexible remote days included.
What you will do
- Improve server and content discovery with contextual embeddings.
- Build safety ML for spam, CSAM signals, and policy violations.
- Run experiments with guardrails for teen and privacy-sensitive cohorts.
- Optimise feature pipelines for sub-100ms inference where required.
Stack & environment
- Python, PyTorch, Spark, SQL.
- Hybrid San Francisco SOMA/Dogpatch.
What we look for
- Recommendation or search ML at consumer scale.
- Experience with trust & safety or content moderation a plus.
- US work authorization.