Overview

As a Fullstack engineer on the Portals team, you will build customer-facing portals that enable secure, scalable self-service experiences. You'll integrate internal systems (billing, CRM, product services) with external users, driving smooth customer journeys and reducing friction. You'll own features end-to-end—from architecture to production—while collaborating with Product, Design, Finance, Sales, and Support.

This role offers impact on growth, usability, and reliability at a fast‐growing SaaS company.

Compensaciones / Incentivos high growth environment private health insurance

Wellhub gym and activities

Cobee expense management language classes office breakfast and organic fruit

Responsabilidades Design and develop customer-facing portals for subscriptions, billing, and account management

Build robust backend services and APIs powering portal workflows

Integrate internal systems and external providers (CRM, billing, authentication, product APIs)

Collaborate with Product, Design, Finance, Sales, and Support to translate business needs into scalable user experiences





Own features end-to-end including architecture, production monitoring, and performance optimization

Follow GitOps mindset with CI/CD practices and rapid iteration

Contribute to architectural decisions and RFCs to improve the platform over time

Requisitos principales 5+ years of experience as a Software Engineer (backend or full-stack)

Experience building customer-facing platforms or SaaS with usability and reliability focus

Experience designing and maintaining production-grade APIs and backend services

Experience with frontend frameworks (React or similar)

Experience integrating multiple systems and services (internal platforms, third-party APIs, auth systems)

Strong ownership mindset and end-to-end delivery

Clear communication and collaboration with Product, Design, and non-technical stakeholders

English proficiency and ability to work with distributed teams ownership cross-functional collaboration communication

Ruby on Rails

React / React Native

API design and backend services

📌 Senior Software Engineer - Data (Barcelona)
🏢 Factorial Hr
📍 Barcelona