Senior AI Prototyper

At Founderful, we focus on helping founder teams of Swiss tech startups to achieve their ambitious goals in becoming international market leaders. This also means supporting our portfolio companies in attracting and hiring the top-tier talent for critical positions.

We’re now supporting one of our portfolio companies, a well funded startup, founded by Ex-Google employees and repeat founders.

They are on a mission to ignite curiosity in children through beautifully crafted, AI-powered learning adventures. They are reimagining how children learn — combining immersive stories, interactive minigames, and generative AI at the core of the experience. Their educational platform transforms dry curriculum into vivid, engaging adventures and we are looking to bring an AI Prototyper / Prompt Engineer on board to push the limits of what’s possible, fast.

This is not a traditional engineering role. It’s a hands-on, high-leverage position for someone who thrives at the bleeding edge of AI capabilities, loves tinkering with prompts and pipelines, and wants to invent the future of learning — one prototype at a time.

What you’ll do:

• Rapidly explore the frontiers of generative AI — especially large language models — to unlock novel capabilities (e.g. auto-generating games or interactive content from a learning topic).
• Design and iterate on complex prompt chains, agent behaviors, and tool-augmented workflows.
• Build quick, scrappy prototypes to test viability of new ideas across text, games, visuals, or multimodal combinations.
• Collaborate with designers, educators, and engineers to bridge ideas into product-ready features.
• Monitor emerging tools, APIs, and research papers — and bring those insights into practical application.

What we’re looking for:

• Deep understanding of LLM behavior, prompting strategies, and model limitations.
• Experience with OpenAI, Claude, Gemini, or similar APIs — ideally with multi-step chains, tool use, or custom system instructions.
• Comfort hacking together prototypes — with whatever tools you like.
• Curiosity-driven mindset with the ability to spot unexpected affordances or emergent behaviors in new models.
• Bonus: Experience in education, game design, narrative systems, or working with multimodal models (image/video/audio)

The role is not a fit but you are interested in exploring opportunities with our portfolio companies? Sign up for our Talent Network here to get matched to the right opportunities.