character.ai

Technical Program Manager partnering directly with the CPO at Character.AI to drive execution of product, design, and engineering initiatives. High-agency fixer who eliminates blockers, optimizes processes, leverages AI tools, and ensures seamless cross-functional delivery in a fast-paced AI consumer company.

Lead technical vision and execution for post-training systems that transform foundation models into intelligent, engaging products. Drive alignment algorithms, RL, and infrastructure for large-scale LLM training and serving.

As a Technical Program Manager, you will be the operational and programmatic backbone connecting cross-functional teams responsible for transforming pretrained language models into intelligent, engaging, safely aligned, and highly scalable products. You will drive clarity, structure, and execution across technically complex and high-stakes work.

Staff Data Scientist partners with product and engineering to optimize monetization via subscriptions, ads, and virtual currencies. Leads experimentation, defines metrics, and delivers insights from behavioral data for revenue growth. Requires 7+ years in consumer products.

Leads high-impact AI infrastructure programs for model training, evaluation, and serving at scale. Partners with engineering, research, and product teams to align roadmaps, drive execution, track metrics, and optimize workflows in technically complex environments. Requires 5-8 years experience in technical program management.

Designs and builds scalable backend systems and applies machine learning to address safety, integrity, and Generative AI risks. Requires 8+ years backend experience, ML expertise, and distributed systems knowledge.

Builds and optimizes ML backend systems for recommendation, ranking, and search in a fast-growing AI consumer app. Requires 5+ years experience, CS bachelor's, ML frameworks like PyTorch/TensorFlow, cloud infra, and modern typed languages.

Builds and maintains scalable backend systems and APIs, collaborating with cross-functional teams to deliver high-performance solutions aligned with business needs. Requires 5+ years experience with Python/Go, databases, cloud platforms, and containerization.

Builds and optimizes user-facing monetization features like payments, subscriptions, and in-app purchases across mobile and web. Requires strong frontend expertise in TypeScript/React/React Native and backend comfort with Python/Golang, plus experience driving revenue through consumer products.

Builds performant, visually appealing front-end interfaces and design systems for AI interaction products. Requires strong React/TypeScript expertise, focus on UX/craft, and collaboration with design/product teams in a fast-paced environment.

Develops evaluation methods, alignment techniques, and adversarial testing for large language models to ensure safety and alignment with human values. Requires PhD in ML/CS, production code skills, GPU experience, and transformers/RL expertise.

Designs, builds, and maintains ML training and serving infrastructure, providing support to research teams. Requires 4+ years in ML infrastructure, cloud platforms like Kubernetes and Google Cloud, and GPU experience.

Develops alignment algorithms, data pipelines, and sampling methods to optimize post-training AI models for performance and efficiency. Requires PhD or equivalent, ML expertise including reinforcement learning and transformers, and production code experience.