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# Experienced Fullstack Engineer - Store Apps Platform

- **Company:** Mediamarktsaturn
- **Location:** Barcelona, Spain
- **Contract:** Permanent contract
- **Skills:** Mobile Application Development, Cloud Computing, System Configuration, Continuous Integration, Github, MongoDB, Node.Js, Query Optimization, E2e Testing, TypeScript, ReactJS, Grafana, Indexer, Backend, Event Driven Architecture, Graphql, React Native, Front End Software Development, Terraform
- **Published:** September 18, 2026
- **Apply:** https://www.buscojobs.com.es/experienced-fullstack-engineer-store-apps-platform-m-f-d-en-barcelona-ID-372179240

## About the Role

Requisitos principalesSolid fullstack experience with TypeScript and Node.js
Frontend capability in React (Rom React Native a plus)
Strong GraphQL knowledge; Apollo is a plus
Hands-on MongoDB experience (schema, indexing, query optimization)
GCP services and Terraform for IAC
Experience with CI/CD tooling, especially GitHub Actions
Familiarity with event-driven architectures (Google Pub/Sub or similar)
Experience with Grafana or equivalent observability tools
Testing discipline across unit, integration, and end-to-end tests
Strong communication and collaborative mindset
strong communication
collaborative mindset
ability to work across team boundaries
TypeScript
Node.js
React

## Description

OverviewAs a Fullstack Engineer in the Platform team, you will own shared infrastructure, shape the backend orchestration service, and help multiple teams move faster with quality and reliability.You'll bridge product teams as a platform proxy, coordinating cross-team decisions and ensuring scalable, well-documented services.You will build and maintain front- and back-end components for shared projects like the back office, and manage cloud infrastructure on GCP.This role blends hands-on engineering with mentoring and a strong focus on observability and CI/CD discipline.Compensaciones / Beneficios10% discount on MediaMarkt websiteFlexible Pay programFlexible working hours and hybrid work optionTraining budget for skill developmentLanguage classes (English, Spanish, German)Office options in Barcelona with cost advantagesResponsabilidadesAct as a platform proxy for product teams, understanding needs and unblocking shared concernsContribute to the backend orchestration service, improving design and reliability as usage growsBuild and maintain shared projects (e.g., back office) across frontend and backend layersManage and improve GCP-based cloud infrastructure (provisioning, configuring, maintaining environments)Improve and extend CI/CD pipelines (GitHub Actions) for fast, stable deliveryStrengthen observability with Grafana dashboards, monitoring and alertingWrite clean, well-tested code and foster a culture of quality and reliabilityMentor engineers across product teams on platform practices, infrastructure, and architectureRequisitos principalesSolid fullstack experience with TypeScript and Node.jsFrontend capability in React (Rom React Native a plus)Strong GraphQL knowledge; Apollo is a plusHands-on MongoDB experience (schema, indexing, query optimization)GCP services and Terraform for IACExperience with CI/CD tooling, especially GitHub ActionsFamiliarity with event-driven architectures (Google Pub/Sub or similar)Experience with Grafana or equivalent observability toolsTesting discipline across unit, integration, and end-to-end testsStrong communication and collaborative mindsetstrong communicationcollaborative mindsetability to work across team boundariesTypeScriptNode.jsReact


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