Hiring: Software Engineer, Backend/Applied ML (Safety & Integrity) Company: Character.ai Location: Redwood City, CA Job Posted Time: 2026-09-02 17:59:13 Employment Type: Full-time Target Skills & Keywords: Backend Engineering, Applied Machine Learning, Distributed Systems, Trust & Safety, Content Classification, Anomaly Detection, Risk Scoring, Behavior Analysis, Generative AI Safety, Content Filtering, Bias Mitigation, Output Monitoring, Scalability, System Optimization, Technical Leadership, Mentorship Experience: - 8+ years of professional software engineering experience, with a strong emphasis on backend systems development. - Proven track record of designing, building, and operating complex, large-scale, and highly available distributed systems. - Experience leading technical design and implementation of sophisticated backend solutions. - Experience conceptualizing, developing, deploying, and iterating on machine learning models and algorithms. - Experience providing technical guidance and mentorship to engineers. - Experience driving long-term technical vision and roadmap for backend systems and applied ML capabilities. Required Skills: - Expertise in one or more backend programming languages. - Strong backend systems development and architecture skills. - Applied machine learning, including content classification, anomaly detection, risk scoring, and behavior analysis. - Designing and building highly scalable, resilient, and performant backend systems. - Cross-functional collaboration with product managers, data scientists, AI researchers, security teams, and operations. - System optimization for performance, scalability, reliability, and cost-effectiveness. - Best practices in software engineering, distributed systems design, data engineering, and ML model development lifecycle. - Knowledge of Generative AI safety, ethics, and mitigation techniques. Qualifications: - Bachelor's, Master's, or PhD degree in Computer Science, Engineering, or a related technical field. - 8+ years of professional software engineering experience with emphasis on backend systems. - Demonstrated expertise in large-scale distributed systems. - Ability to provide technical leadership and mentorship. - Strong understanding of emerging threats and advancements in backend engineering, distributed systems, ML for trust and safety, and Generative AI safety research. Compensation: Not specified in the provided job text. Interested candidates, please apply directly through the job posting on company's career page or try via AI auto apply on this platform. Don’t miss this opportunity to join a forward-thinking team!