Flagcat is a creative & tech startup on a mission to reinvent how stories are told and experienced.

Our approach is unique: at Flagcat, Mangaka, animators and developers work together to create the next generational IPs.

Earlier this year, we raised $3M to build the world’s leading short vertical anime app.

A mobile app, where you can watch short episodes of the best original anime series.

We’re currently crafting a catalog of 100+ exclusive short anime series produced in-house, thanks to our team of mangaka and animators.

The app is set to launch soon — and we’re assembling a world-class team to make it a global hit.

Join our team of anime creators, all driven by creativity and performance.

As Product Designer, you’ll be the first product person at Flagcat — joining at a pivotal time as we will soon launch our mobile app.

This position requires partial on-site presence in our Paris HQ (République) as we believe the best ideas happen face-to-face.

Until now, product direction has been led by our CTO and CEO. You’ll bring the missing expertise to turn our app into a world-class streaming experience.

You’ll be a key player at the intersection of creativity and data, responsible for optimizing user acquisition, retention, and conversion through design decisions.

You’ll own the full design process: from concepts to A/B tests, to high-fidelity prototypes and in-app feature optimization. You’ll work closely with tech team, marketing, and leadership to make our app addictive, delightful, and scalable.

• Manage, refine, optimize the UX/UI for our mobile anime platform (iOS & Android).

• Implement the full gamification system within the app to make the user experience delightful, engaging, and addictive

• Collaborate with growth and tech teams to analyze ad performance and optimize conversion funnels (acquisition → activation → retention → monetization).

• Conduct A/B tests on acquisition flows and in-app experiences to identify winning variations and improve KPIs.

• Work closely with the anime production team to help the best content perform — leveraging data and design to increase engagement and viewing time.

• Work with the marketing team to align creative assets, app visuals, and user flows for maximum impact.

• Help establish Flagcat’s design culture and best practices from the ground up.

• {Required} 5+ years of experience as a Product Designer / UX Designer for B2C mobile apps.

• {Required} Proven experience designing products with gamification features (rewards, progression, coins, social loops, achievements, etc.).

• Strong portfolio demonstrating mobile UX/UI, visual design, and user flow expertise.

• Analytical mindset — comfortable running A/B tests, working with metrics, and optimizing funnels.

• Passion for anime is a big plus.

• Comfortable working in a fast-paced, startup environment where things move fast and change daily.

• Fluent in English (French is a plus).

Ready to design the next generation of anime entertainment?

Apply now and join the Flagcat adventure.