💼 Full-Time Position

Senior Product Engineer - Authentication Team

🏢
Factorial
📍 Barcelona, Catalonia, Spain
📍
Location
Barcelona, Spain
📅
Posted
June 25, 2026
Type
Full-Time
🎯

Full-Time Opportunity: This is a permanent, full-time position with a competitive package and real career growth potential.

Job Description

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?


We’re looking for engineers who:



  • Treat AI as central to their craft, not a feature to bolt on later

  • Want to build and ship, not debate and document

  • Care about whether the thing they built actually worked and what is the exact value they’re adding.


Ready to be part of the challenge?


We are looking for a Product Engineer to join our CIAM (Customer Identity and Access Management) team at Factorial. You will work across the stack with a stronger focus on backend development.


You will be part of the team responsible for Authentication and Authorization at Factorial, driving a pragmatic balance between security and usab...