Character.AI
Open positions
Research Engineer AI Safety and Alignment
You will develop safety and alignment evaluations, research alignment, value-learning, and interpretability techniques, and conduct adversarial testing of large language models. You will analyze and mitigate harmful…
Software Engineer Monetization
You will build and optimize mobile and web features for payments, subscriptions, and in-app purchases. You will design monetization experiences, collaborate on trustworthy purchase flows, define metrics and…
Machine Learning Infrastructure Engineer
You will support machine-learning research and products with training and serving infrastructure. You will build tools to diagnose cluster and hardware failures, monitor deployments, manage experiments, and maximize…
Software Engineer Core Product
You will develop visually appealing and high-performance user interfaces for consumer products. You will refine user experiences, translate design concepts into product interfaces, maintain design systems and patterns,…
Software Engineer Backend Applied ML Safety and Integrity
You will architect scalable backend systems for integrity and safety features. You will develop and operate machine-learning models for content classification, anomaly detection, risk scoring, behavior analysis, and…
Software Engineer Backend
You will build, maintain, and optimize scalable backend services that support applications and infrastructure. You will develop secure APIs, improve system reliability and performance, monitor system health,…
Software Engineer Applied ML Discovery Recommendation and Search
You will work with product, data science, and data platform partners to design and implement applied ML models and infrastructure. You will build ML backend systems for recommendation, ranking, and search, including…
Technical Program Manager AI Infrastructure
You will lead planning and execution for AI infrastructure initiatives spanning training, data systems, evaluation, and inference. You will align roadmaps, track infrastructure metrics, improve workflows and tooling,…
Technical Program Manager Model Alignment and Deployment
You will lead cross-functional programs for data collection, annotation, model alignment, safety testing, and model serving. You will coordinate research, safety, infrastructure, and UX workstreams; build evaluation…
Technical Program Manager Product Experience
You will own execution of major initiatives, manage dependencies across product, design, and engineering, and ensure milestones are met. You will synthesize action items, improve SDLC processes, bridge design concepts…
Staff Data Scientist Monetization
You will partner with product and engineering to optimize subscriptions, advertising, and virtual currency economies. You will define success metrics, lead experiments, translate behavioral and economic data into…
Technical Program Manager, Product Experience
Character.AI is looking for a high-leverage, force-multiplying Technical Program Manager (TPM) to partner directly with our Chief Product Officer (CPO). In this role, you will operate across the entire product and…
Technical Program Manager, Model Alignment and Deployment
About the role Model Alignment and Deployment is a critical, cross-functional effort spanning our Post-Training, Safety Engineering, Trust & Safety, ML Infra/Model Serving, and User Experience Research (UXR) teams.…
Staff Data Scientist, Monetization
About the Role: is building the future of open-ended interactions between people and intelligent agents. As our platform scales, so does the opportunity to build sustainable, user-aligned monetization through…
Technical Program Manager, AI Infrastructure
About the Role We’re hiring a Technical Program Manager, AI Infrastructure to lead high-impact programs that power ’s model development and serving systems at scale. In this role, you’ll partner closely with…
Software Engineer, Backend/Applied ML (Safety & Integrity)
About the role We’re looking for a talented and creative Software Engineer to join our Safety Engineering team at ! In this role, you will be at the forefront of designing, developing, and scaling robust backend…
Software Engineer, Applied ML (Discovery, Recommendation & Search)
About the Role As a Software / ML Engineer you will work cross functionally with product, data science and data platform to identify, design and implement the applied ML models and infra, ranging from the model…
Software Engineer, Backend
About the Role We are looking for a talented and motivated Backend Engineer to join our team. You will be responsible for building and maintaining scalable, high-performance backend systems that power our products.…
Software Engineer, Monetization
About the Role We are scaling personalized AI to billions of users and monetization is at the core of making this vision sustainable. Our monetization team is reimagining how users interact with virtual currency,…
Software Engineer, Core Product
About the role and team We are building the future of open-ended interactions between people and intelligent agents. This requires rethinking design, user interfaces, workflows and interactivity from first principles.…