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? We’re looking for engineers who:

Treat AI as central to their craft

⚡ Are obsessed with building and shipping fast

Care about real impact, not hierarchy or titles

If that sounds like you, keep reading.

The Role We're looking for a

Staff/Senior React Native Engineer to help us boost the company to the next level.

What You’ll Do

You will be part of the mobile engineering team, working closely with other talented mates. The objective of the team is to provide a super smooth experience for app users.

You will ideate, craft and deploy interactions and experiences for customers, being creative with opportunities, crafting them smartly and iterating based on results.

You will actively participate in defining the objectives for the team, always keeping the customer in mind.

You will be part of the continuous improvement of our technology, infrastructure and architecture of the app.

You will be owner and accountable for the success of the team.

In this process you will be guided and helped by a buddy from the first day, and a super talented team to play together.

What we’re looking for Your title matters less than mindset . You might be mid, senior, or staff; what we care about is:

AI as a habit: you’ve built real AI‑powered systems or workflows (not just experiments)

Proven impact: shipped projects, side projects, or contributions that made a measurable difference

Product‑first thinking: you design complete experiences, not just isolated components

Speed & adaptability: you experiment, learn, and iterate fast

Bonus points if you’ve worked with:

LLMs, skill‑based agents, MCP, or other AI protocols ✨

How We Work





Office‑first in Barcelona & Madrid, with 20% remote flexibility A people‑first, high‑trust culture built on radical candor and ownership A multicultural team (40+ nationalities) building the next generation of business management software

About Us At Factorial, we’re building the leading business management software for companies of all sizes. Our platform centralizes key workflows across HR, finance and operations, freeing teams from manual processes so they can focus on what really matters: leading, growing and taking care of their people.

With over 1,200 employees across 7 markets, we serve 700,000+ users and are one of Europe’s fastest‑growing SaaS companies, backed by top‑tier investors and proudly headquartered in Barcelona. We believe in bold goals, radical ownership and inclusive collaboration. If you’re excited to shape the future of business management technology, we’d love to meet you.

Our Values

We own it: We take responsibility for every project. We make decisions, not excuses.

We learn and teach: We're dedicated to learning something new every day and, above all, sharing it.

We partner: Every decision is a team decision. We trust each other.

We grow fast: We act fast. We think that the worst mistake is not learning from them.

We believe in diverse talent: We welcome applicants from all backgrounds and strongly encourage people of diverse experiences and identities to apply.

We believe in inclusion:



We are committed to equal opportunities and actively promote workplace inclusion of people with disabilities. If you would like to learn more about our inclusive recruitment processes, you are welcome to indicate so optionally and we will share additional information with you.

Perks of being part of our team

High growth, multicultural and friendly environment

Alan as private health insurance

Healthy life with Wellhub (Gyms, pools, outdoor classes) ♀️

Save expenses with Cobee

Language classes

Breakfast in the office and organic fruit

Nora discounts

Free caffeine and theine ☕

Pet Friendly The hiring process A first conversation with our Talent Acquisition Partner. It will be about comparing our expectations and making sure we match on a human level. We will also check our Engineering Rubrics (check them out, they are open!) and the salary for your position.

A second conversation with the team’s Engineering Manager. This is about making sure we can work together. You will have a conversation about the team, their needs, your profile and how you can complement it. Expect a mix of a human and technical conversation.

A Live Engineering Challenge with two Factorial engineers. In this challenge, we’re not looking for a finished product, but for how you structure problems, ask questions, use technology, and reason about solutions.

One last coffee‑chat with our CTO, where you can get all the answers about Factorial’s culture, business vision or anything else that interests you.

And that’s it! Feel free to request any other conversation you want, with team members or to address specific concerns at any time during the process.

The whole process is remote, using videoconferencing tools!

📌 Senior Software Engineer - Mobile (Madrid)
🏢 Factorial
📍 Madrid