Backend Machine Learning Safety Engineer

Build scalable backend systems and applied machine learning solutions for safety and integrity challenges at Character.AI. Shape trust in human-to-AI interaction.This Software Engineer role focuses on backend development, distributed systems, and machine learning. You will address content classification, anomaly detection, risk scoring, and safeguards for Generative AI systems. The work includes technical leadership, cross-functional collaboration, and long-term platform strategy.Key Responsibilities:
Architect resilient backend systems powering integrity and safety featuresDevelop safeguards for harmful or biased Generative AI contentDeploy and iterate models for classification and risk scoringCollaborate with product, research, security, and operations teamsMentor engineers and improve platform performance and reliabilityRequirements:
Eight or more years of backend software engineering experienceComputer Science, Engineering, or related technical degreeExperience operating large-scale, highly available distributed systemsExpertise in Python, Go, Java, or C++Applied machine learning experience addressing integrity, trust, or safetyApply backend engineering, distributed systems, and machine learning expertise to strengthen Character.AI safety platforms.
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