Do 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?Join us as a Founding Engineer in a brand-new Factorial spinoff ðWe're building a new startup inside Factorial, starting from scratch, with real backing and a clear target: It's ambitious, and that's the point.But this isn't an internal project. It's a spinoff with its own identity, its own pace, and its own team.That said, strong Ruby on Rails experience on the backend and solid React or TypeScript on the frontend will go a long way.If you've ever wanted to work in a small, scrappy team with the energy of an early-stage startup but without the typical early-stage uncertainty, this is that opportunity.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.You’ll join the newly formed IT Management domain, where we’re creating a platform to manage onboarding, permissions, support, and equipment, so new employees are productive from day one. If you’re excited about shaping a new product area, owning features end-to-end, and working in a people-first company with a strong engineering culture, this role is for you.Our mission in the IT Management Domain is building this new product in Factorial, including multiples moving pieces (inventory management, support ticketing, MDM, IdP, integrated onboarding, etc.), You have an entrepreneurial mindset and genuinely enjoy the early stage of building something from scratch.You’re comfortable working with Ruby on Rails & React and understand how to integrate AI models into scala

📌 Senior Product Engineer (Barcelona)
🏢 Factorial Hr
📍 Barcelona