Senior Software Engineer - Data
We re hiring Fullstack engineer with a product mindset who loves building scalable systems and polished user experiences.
Were creating a platform where customers can manage subscriptions, billing, invoices, payment methods, and usage insights through seamless self-service experiences built on a modular, scalable architecture with best-in-class service design.

And this is just the start more portals and platform capabilities are already on our roadmap
Interested? Let s talk
What s the mission?
- Factorial is building a world-class platform to support customers and partners interact with our products, manage their accounts, and grow with us.
- As a Fullstack engineer in the Portals team, you ll build and evolve customer facing portals that enable secure, intuitive, and scalable self-service experiences.
- You ll design and integrate systems that connect internal platforms billing, CRM, product services, and support with external users, ensuring reliable access to key workflows across the customer lifecycle.




- Your work will directly impact how customers and partners interact with Factorial, improving transparency, reducing operational friction, and enabling scalable growth through self-service.

The role
- You ll be part of a fast-growing Engineering team of 250+ product developers, building high-impact experiences that directly affect customer satisfaction, partner collaboration, and operational efficiency.
- You will design and develop customer-facing portals, enabling users to manage subscriptions, access services, review account information, and interact with Factorial s platform.
- You ll collaborate closely with Product, Design, Finance, Sales, and Support teams to translate business needs into intuitive, scalable, and secure user experiences.
- You ll build robust backend services and APIs that power portal workflows while maintaining clean integrations with internal systems such as CRM, billing, and product platforms.
- You ll

📌 Senior Software Engineer (España)
🏢 Factorial
📍 España