Product Engineer

Hello!

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

Were looking for engineers who:

• Are genuinely curious about AI and excited to build with it not just around it.
• Want to ship real things and learn fast not wait until they feel ready.
• Care about whether what they built actually helped not what their title says.

Ready to be part of the challenge

As a Product Engineer youll help us support and scale our AI Business Management Software across different domains. Were on the lookout for people who get involved beyond the ticket curious about why a feature exists not just how to build it. Someone who asks questions digs into the problem and takes ownership of the outcome. This is not a maintenance role. Were moving fast our domains are expanding and theres real engineering work to do.

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.

Youll work on a product used by thousands of companies across Europe so your work has real measurable impact. Youll be in the middle of some genuinely new engineering territory: AI-native product development not retrofitted AI. Youll grow alongside a strong experienced team that takes craft seriously!

What are we looking for

• You have 1 to 4 years of experience in Software engineering and youre comfortable working across the stack. You dont need to have all the answers but you ask good questions and follow through.
• Youre curious about AI and have started exploring it whether in side projects coursework or on the job. You want to understand how these systems actually work not just use them.
• You care about outcomes. You want to know if the thing you built actually helped and youre willing to go back and fix it if it didnt.
• Youre comfortable or eager to get comfortable with Ruby on Rails and React.
• You communicate clearly and can explain what youre building and why without overcomplicating it.
• And youre a collaborative teammate: you ask for help when you need it and share what you learn.

What Youll Be Doing

• Youll ship features end to end from understanding the problem to writing the code to checking whether it worked in production.
• Youll work alongside experienced engineers on AI-integrated systems: LLM-powered workflows agentic features and tools that help Finance teams move faster.
• Along the way youll learn how to evaluate AI features in production not just build them because reliability and user impact matter more than model complexity.
• Youll take real ownership of your work. That means being curious about the why not just the how. And youll grow fast. This is a team that moves quickly shares knowledge openly and expects you to level up.

How We Work (Barcelona or Madrid Office)

At Factorial we believe the best products are built when people come together in person to collaborate challenge ideas and move fast. Thats why our Engineering Teams follows an office-first flexible approach.

We work on-site several days a week using that time to connect align and innovate as a team. 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.

At Factorial we dont evaluate you by years of experience but by your knowledge and skills.

We use our Career Path with a rubric framework where we define what is expected for each experience level and skill. This framework allows you to know your current level and what you need to keep growing. We love transparency so our Career Path includes the salaries for each level which we share during the first interview to ensure alignment.

Our Hiring Process

1. Intro Call Chat with our Talent Partner about your journey and goals.
2. Hiring Manager Interview Deep dive into your product mindset teamwork and problem-solving.
3. Live Challenge A collaborative technical exercise based on real-life problems.
4. Final Coffee Chat A relaxed conversation with our CTO & VP of Engineering to explore our vision culture and your growth.

The whole process is remote using videoconferencing tools!

About Factorial

At Factorial were 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 over 1500 employees across Europe Asia Africa and America. We are one of Europes fastest-growing SaaS companies proudly headquartered in Barcelona. If youre excited to shape the future of business management technology wed love to meet you.

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.

Our Values

• We own it: We take responsibility for every project. We make decisions not excuses.
• We learn and teach: Were dedicated to learning something new every day and above all share 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.

Wanna learn more about us Check our website!

Perks of being part of Factorial

• 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
• Food discounts with Nora
• Pet Friendly
• Much more that well spill during the interview process!