Senior/Staff Software Engineer (Communications)
Hello

Were starting something new at Factorial: Chats. Its a fresh area of the product, built around communication and, from day one, built with AI and agents doing real work in it, not just a chatbot bolted onto the side. Theres no team page for this yet. No backlog gathering dust, no how weve always done it. Just the problem, and whoever shows up to solve it.

Were hiring a Senior or Staff engineer to help get Chats off the ground. Fullstack is idóneo, but if your expertise lies merely in mobile it works for us too

This isnt just a new product, its a chance to rethink how software gets built. Were creating an AI-native product from scratch, where AI isnt another feature but part of the core architecture and user experience. Every technical and product decision starts with the question: how would we build this if AI existed from day one?

Were looking for engineers with a founder mentality. People who thrive in ambiguity, move quickly, question assumptions, and are excited to create rather than maintain.



There wont be years of legacy decisions to work around, only opportunities to shape the product, the platform, and the culture from the ground up.

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.

Were 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 were building on top of that: agentic workflows, LLM-integrated features, systems that behave probabilistically rather than deterministically.

More info about the Communications team here

What were looking for?

Your title matters less than your mindset. You might be senior or staff, what we care about is:
- Bu

📌 Senior/Staff Software Engineer (España)
🏢 Factorial
📍 España