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Founding Engineer

Open 45d

We're creating the third layer of interaction — a personalized AI action layer that lives across all your workflows. If that excites you, and you’re a world-class infrastructure expert, please apply.

Why Dex Matters

  • Flow is everything. Every tab switch, every UI reload, every wait for an AI handoff kills momentum.
  • The future of productivity is collaborative AI. Dex is an active, real-time partner embedded directly in your browser—the place where your work actually lives.
  • Context makes or breaks a product. You need systems that understand where you are, what you're doing, and what should happen next.

What You'll Build

  • Core agent components, including memory stores, context compression, inter-agent protocols, planning and tool use.
  • High performance state management and real-time UI observation systems.
  • Scalable infrastructure for browser-native AI.

Requirements

  • Expert in React/Next.js, TypeScript, and Python.
  • Deep browser internals experience.
  • Proven rapid prototype to production track record.
  • Preferred: Prior experience with AI/ML infra or agentic systems.

Sample Projects

  • Translating browser inputs (voice, keyboard and mouse inputs, tab changes, DOM) into actionable workflow graphs.
  • Agentic systems that predict and execute users’ next steps in complex workflows.
  • A searchable, self-updating memory store for personalized user flow paths.

See also

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