Full-Stack Developer (React / TypeScript / Java / Golang) Location: Madrid hybrid Contract / 6months + extensions Language: English required We're hiring Full-Stack Developers to support development and DevOps for customer-facing platforms including web and self-service portals. You'll join a collaborative team where quality, ownership and continuous improvement are key. Key responsibilities Full-stack development and DevOps responsibilities across web platforms Contribute to delivery, improve features, and resolve issues proactively Work closely with the team to support and coach junior developers Maintain high standards in performance, security and test coverage Must-haves Proven full-stack experience Strong English communication Practical AI usage (e.g. GitHub Copilot ) Tech stack: React, TypeScript, Java, Golang, Node, MariaDB, Elasticsearch DevOps tooling: Docker, Kubernetes, AWS/GCP, GitHub Actions Quality-driven approach (unit testing, secure development, performance focus) Nice to have Telco knowledge TM Forum Open Digital Architecture experience Strong Agile/Scrum experience (Scrum Master a plus) Salesforce API experience Web analytics (GA4) Experience experimenting with new concepts/ideas Please reach out if you are interested?