We are looking for a Frontend / Platform Engineer to help build and evolve an enterprise Developer Portal, designed to provide development teams with a single, scalable entry point to tools, services and engineering capabilities.
This is not a traditional frontend role. You will work at the intersection of Frontend Engineering, Developer Experience and Platform Engineering, building React-based experiences, Backstage plugins and integrations that make it easier for engineering teams to discover, onboard and interact with platform services.
A key part of the role will be automating developer onboarding and platform synchronization, including detecting changes in GitHub and automatically reflecting them within the Developer Portal.

What you'll work with
Frontend: React, TypeScript, JavaScript
Backend / Integration: Node.js, Express
Developer Portal: Backstage
Developer Ecosystem: GitHub and engineering tooling
APIs & Integration: REST APIs, asynchronous processing and external system integrations
Automation: GitHub-driven workflows and automated platform synchronization
Cloud: AWS,



including AWS Lambda
Runtime & Containers: Kubernetes
Architecture: Enterprise portal architecture, scalability and reusable components
UX: Reusable UI components and developer-centric experiences
Ways of working: Agile (Scrum / Kanban), cross-functional and international teams

What you'll do
Design, develop and evolve React and TypeScript-based components for an enterprise Developer Portal
Build and maintain Backstage plugins to integrate internal and external engineering systems
Develop backend and integration capabilities using TypeScript, Node.js and Express
Build automation that detects changes in GitHub and automatically synchronizes relevant information with the Developer Portal
Develop REST API integrations and asynchronous data-processing workflows
Create tools that simplify the onboarding of development teams and reduce friction when adopting the platform
Collaborate with UX spe

📌 Frontend / Platform Engineer – React and TypeScript (Madrid)
🏢 Infoser New Technologies
📍 Madrid