Design Engineer, Monetization - React, JavaScript, HTML

Our mission is to empower everyone globally with personalized AI. We were founded by AI pioneers Noam Shazeer and Daniel De Freitas, and we make one of the world’s leading personal AI platforms, Character.AI. Character.AI is a full-stack AI company with a globally scaled direct-to-consumer platform. We are uniquely centered around people, letting users personalize their experience by interacting with AI “Characters.”

Character Technologies, Inc. is based in Menlo Park, CA.

We are working to put our technology into the hands of billions of people to engage with, and continuing to build personalized AI that can be helpful for any moment of your day.

We are looking for a Product Engineer to join our Monetization team, where you'll play a critical role in building scalable, high-performance experiences that drive revenue growth. You’ll bridge the gap between design and engineering, crafting innovative solutions for ad formats, subscription models, in-app purchases, and other monetization strategies while ensuring a seamless user experience.

Collaborate with product managers, designers, and engineers to develop engaging monetization features. Build and prototype interactive user experiences that balance monetization goals with user delight. Optimize performance, accessibility, and usability across web and mobile platforms. Implement A/B testing frameworks to evaluate the effectiveness of monetization strategies. Work with data analysts to integrate tracking mechanisms that provide insights into user behavior and revenue impact. Maintain and improve design systems to ensure consistency across monetization components. Stay up to date on industry trends, best practices, and emerging technologies in ad tech and monetization.

Proficiency in HTML, CSS, JavaScript, and modern frameworks. React strongly preferred, React Native nice-to-have. Strong experience with UI/UX design principles and design tools like Figma or Sketch. Familiarity with A/B testing platforms, analytics tools, and performance optimization. Experience integrating third-party ad networks, payment APIs, or subscription platforms is a plus. Ability to translate business goals into elegant, scalable design-engineering solutions. Excellent communication skills and the ability to work cross-functionally. Passion for data-driven design and iterating on solutions based on performance metrics.