Character.AI

Build large-scale backend systems and applied ML solutions that address trust, safety, and integrity challenges in human-to-AI interaction. This high-impact role combines technical leadership, generative AI safety work, and production machine learning.

Build applied ML models and backend infrastructure for discovery, recommendation, ranking, and search in a rapidly growing consumer AI application. The role covers the full path from data pipelines and model training to production serving and optimization.

Build and scale the backend systems powering Character.AI’s interactive entertainment platform. You’ll design reliable services and APIs, optimize performance, and collaborate across engineering, product, design, and data teams.

Build engaging mobile and web monetization experiences spanning subscriptions, payments, virtual currencies, premium features, advertising, and in-app purchases. You’ll combine frontend product engineering with backend commerce systems and experimentation to drive both revenue and user delight.

Build polished, high-performance front-end experiences that shape the future of interactive consumer AI. You’ll work closely with design and product teams to create features, interfaces, and design systems used by millions of people.

Build and maintain the infrastructure powering ML research and product training and serving workloads. You’ll improve GPU utilization, diagnose cluster and hardware failures, and support large-scale machine learning operations.