Xavier Carreras is a software engineer based in Barcelona with nine years of experience specializing in frontend development using modern JavaScript and TypeScript ecosystems (React, Redux, RxJS, Mithril) while retaining a solid PHP and Node.js backend background. He currently ships user-facing features at Tumblr after roles at New Relic and Mailtrack, where he developed a production Chrome extension and real-time WebSocket systems. Xavier emphasizes test-driven development with unit and end-to-end automation and regularly practices pull-request reviews and pair programming within Scrum teams to improve code quality. He’s adept at bridging legacy PHP architectures and modern JS toolchains, a practical advantage for teams undertaking modernization, and holds an engineering degree in telecommunications from UPC.
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