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.

Frontend: React, TypeScript, JavaScript
Backend / Integration: Node.js, Express
GitHub and engineering tooling
Automation: GitHub-driven workflows and automated platform synchronization
Cloud: AWS, including AWS Lambda
Kubernetes
UX: Reusable UI components and developer-centric experiences
Agile (Scrum / Kanban), cross-functional and international teams

Design, develop and evolve React and TypeScript-based components for an enterprise Developer Portal
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




Collaborate with UX specialists to design intuitive and reusable developer experiences
Integrate cloud-native services running on AWS and Kubernetes
Participate actively in technical discussions, code reviews and Agile ceremonies

Strong hands-on experience with TypeScript and JavaScript
Solid professional experience developing applications with React
Experience with Node.js / Express
Experience with asynchronous data processing and system integrations
Good understanding of UI/UX principles and reusable component design
Experience working with GitHub and modern software development workflows
Experience working in complex enterprise IT environments
Experience working with Agile methodologies (Scrum / Kanban)

Experience building GitHub integrations, webhooks or event-driven automations
Experience with AWS , particularly AWS Lambda
Experience deploying or operating applications on Kubernetes
Experience integrating developer ecosystems such as source control, CI/CD, observability, compliance or AI tooling
If you are passionate about React and TypeScript but want to go beyond traditional frontend development , building tools and platforms that improve how other engineers work, we want to hear from you.

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📌 Frontend Developer React/Type Script (Madrid)
🏢 Infoser New Technologies
📍 Madrid