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Pebble

Pebble

Job listing

London, United Kingdom£80k-£110k + Equity

Founding Game Designer at AI learning world startup led by former Google and Synthesia leaders

Join a world-class team led by former Google and Synthesia leaders to build the first generative learning world for children. As the Founding Game Designer, you’ll define a new genre of play inspired by 'The Diamond Age,' creating a procedurally generated 2D world where 6–10-year-olds explore alongside an AI companion. This isn't about building levels—it's about designing the systems and constraints that make an AI-driven world feel magical. With £80k-£110k salary and founding equity, you’ll help bridge the gap between AI and childhood education from their Shoreditch hub.

Overview

Role overview

You will be the first game designer for a revolutionary generative learning world built in Godot 4. Designing for children aged 6–10, you will move beyond static levels to create the systems, constraints, and progression mechanics that govern an emergent, voice-driven 2D world featuring an evolving AI companion character.

Company

Pebble

Pebble

AI learning world startup led by former Google and Synthesia leaders

Responsibilities

What you will do

  • Design the exploration systems, pacing, and progression mechanics that make a procedurally generated world feel coherent and emotionally resonant.
  • Prototype rapidly using AI tools to generate assets and test emergent player behaviors within a voice-first, interactive environment.
  • Establish the foundational design frameworks and provide strong input on the visual art direction to ensure a safe, engaging experience for young children.

Candidate profile

Who this is a fit for

  • Proven track record of shipping interactive products where you owned core systems design, economy, or progression mechanics.
  • Strong systems thinker who can design rules for emergent behavior rather than relying on hand-crafted, authored content.
  • Creative generalist comfortable working in Godot 4 and designing for non-adult audiences with a curiosity for how children play and learn.

What makes it remarkable

Why this role is remarkable

  • Shape a completely new genre of "generative learning" inspired by The Diamond Age, moving digital play from passive consumption to active, personalized exploration.
  • Join a world-class founding team: the CEO previously raised $25M+ for Neoplants, and the CPTO was the first product hire at $1B+ unicorn Synthesia.
  • High-impact founding role with significant equity, allowing you to define the design language and visual identity for a product bridging the gap between AI and childhood.

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