At Factorial, we're looking for an Engineering Team Lead who still writes code. To be clear about what this role is: it's a player-coach job. If you're looking for a role where you lead from a distance and spend the week in planning meetings, this isn't it.
AI isn't a feature we're adding to our product, it's changing how the product works. That means rethinking how we design and build software from the ground up, moving from deterministic systems to AI-powered workflows that help real businesses run better every day. It's genuinely hard, and it's exciting.
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 a 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've mentored engineers, and you enjoyed it more than you expected.
You'd rather solve the problem with the team than hand it over and check in later.
Solid full-stack experience shipping and maintaining production software.
You still code regularly, and you want to keep it that way.
Strong experience designing APIs (REST, GraphQL, etc.) You've run into scalability, performance, and quality as real constraints in production, and worked through them.




You can read an unfamiliar codebase and be useful in it quickly.
Being a great Engineering Manager at Factorial means caring about more than the code. You know when to ship something imperfect and when to slow down and get it right.
AI-native engineering and product mindset
We expect our engineering leads to build AI-powered products, not just use AI tools on the side.
You treat AI as a core part of modern software engineering, not something you bolt on at the end.
You've built or contributed to AI-powered features or workflows that made it to production.
You know what good AI development looks like in practice: defining behaviour and success criteria before you build, measuring output quality, grounding systems in real data, designing workflows that take safe and auditable actions, and knowing when to keep humans in the loop.
You use AI-assisted tools to move faster day to day — coding, testing, debugging, documentation.
You understand the real limitations of LLM-based systems: hallucinations, evaluation challenges, data sensitivity.
You'll help lead the shift to AI-native product development — not by mandating tools, but by setting the example and creating space for your team to experiment.




How We Work (Barcelona or Madrid Office)
That's why our Engineering Teams follows an office‑first, adaptable schedule.
However, we also understand the importance of focus and flexibility, so we support remote work when it makes sense - whether for deep work, personal needs, or just a change of scenery.
This balance helps us stay agile, creative, and closely connected, while giving everyone the space to do their best work.
Intro Call → Chat with our Talent Partner about your journey and goals.
Interview with our Engineering Director → Deep dive into your leadership experience, product mindset, technical background and problem‑solving abilities.
Final Coffee Chat → A relaxed conversation with our CTO & VP of Engineering to explore our vision, culture, and your growth.
And that’s it! The whole process is remote, using videoconferencing tools!
At Factorial, we're building the leading AI Business Management Software for companies of all sizes. Our platform centralizes key workflows across HR, Finance, Talent, Operations, and IT, freeing teams from manual processes so they can focus on what really matters: leading, growing, and taking care of their people. If you're excited to shape the future of business management technology, we'd love to meet you.
We own it: We take responsibility for every project. We're dedicated to learning something new every day and, above all, share it.
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Breakfast in the office and organic fruit

📌 Engineering Team Lead (Barcelona)
🏢 Factorial Hr
📍 Barcelona