Staff AI Engineer - API & Integrations Team (Madrid)### HelloDo you want to help us redefine how AI powers the future of Business Management software, not as an add-on, but as a core part of how people work, decide and grow?We’re looking for engineers who:* Treat AI as central to their craft, not a feature to bolt on later* Want to build and ship, not debate and document* Care about whether the thing they built actually worked — not what their title says.Ready to be part of the challenge? ### About the team Our Engineering team is the engine behind Factorial, crafting the tech that makes HR simple, fast, and reliable for thousands of companies. If you love solving hard problems and want to build something that truly matters, come build it with us.We're a team of 200+ Product Engineers building Business Management solution that actually works for the people using it. Our core stack is Ruby on Rails and React but the interesting work right now is what we're building on top of that: agentic workflows, LLM-integrated features,



systems that behave probabilistically rather than deterministically.The API & Integrations team addresses particular challenges at Factorial. We sit at the intersection between product and platform. We own product surface while we also design developer experiences for internal and external developers of integrations.* We build tools for Factorial product teams to publish in our extensive public API.* We build an integrations framework to achieve the best user experience and developer experience when using integrations. Several factorial products are already using this framework. And we keep expanding it.* We enable our developer partners to extend Factorial and live the best developer experience. With the acquisition of YepCode, we will be boosting how we build integrations, placing AI at the center of the process.Our mission is not only to unblock markets that rely on a fragmented market of different external software (payroll software solutions,

📌 Staff AI Engineer (Madrid)
🏢 Factorial Hr
📍 Madrid