London-based Dex has secured $5.3 million in seed funding led by Notion Capital, with backing from a16z Speedrun, Concept Ventures, and OpenAI angel investors. The round brings total funding to $8.4 million.

Founded in early 2025 by former Atomico advisor Paddy Lambros, Dex tackles a critical pain point: nearly every business problem at young companies can be traced back to hiring decisions. The platform functions as an AI talent agent, conducting detailed conversations with candidates about their experience and career goals before matching them with suitable roles.

Over 15,000 engineers have signed up, with more than 50 tech companies using the service, including ElevenLabs and Synthesia. Since launching paid services in late 2025, Dex has reached a roughly $1.8 million annualized revenue run rate.

Unlike traditional recruiting tools, Dex charges employers 20-30% of hired candidates' salaries—only earning when placements succeed. The company plans to expand into New York and San Francisco this year, competing in an increasingly crowded AI recruitment market against rivals like Jack & Jill and Juicebox.