Senior Backend Engineer, FinTech & AI-Driven Billing

Factorial; Barcelona; Híbrido; EUR 90.000 - 130.000; Jornada completa

Ventajas ofrecidas por este puesto de trabajo

Private health insurance

Wellhub gym membership

Cobee perks

Breakfast in the office

Nora discounts

Pet Friendly offices

Descripción de la vacante

Factorial is seeking a Senior Software Engineer to join our Data Ops team. You will own the backend architecture of internal sales, invoicing, and billing applications, building resilient, scalable APIs and cloud workflows that power finance and customer experiences.

You’ll collaborate with design and product, integrate payment platforms like Stripe or Adyen, and embed AI into development with GitHub tools.

Formación

• 5+ years of backend/software engineering experience.
• Strong knowledge of databases, Docker, and modern cloud infrastructure.
• Experience building production APIs with high availability and security.
• Fintech/payment platforms or financial apps is valued.
• Proactive in adopting AI and automation in development.

Responsabilidades

• Own the backend architecture of internal sales, invoicing, and billing apps with high availability and security.
• Design robust backend workflows for critical financial data.
• Integrate Stripe, Adyen and other payment APIs to optimize financial flows.
• Develop end-to-end products with design/product teams.
• Embed AI into workflow using GitHub and AI tools.
• Participate in agile practices, PR reviews, CI/CD, and specs.

Conocimientos

Backend engineering

Cloud architectures

APIs & integration

Docker

AI tools usage

Agile methodologies

Team collaboration

Herramientas

Cloud platforms (AWS/GCP/Azure)

Stripe/Adyen integration

GitHub & CI/CD

Descripción del empleo

Factorial is seeking a Senior Software Engineer to join our Data Ops team. You will own the backend architecture of internal sales, invoicing, and billing applications, building resilient, scalable APIs and cloud workflows that power finance and customer experiences.

You’ll collaborate with design and product, integrate payment platforms like Stripe or Adyen, and embed AI into development with GitHub tools.