Geoffroy Warin has been programming since he was 10. A firm believer in the Software Craftsmanship movement and open source initiatives, he is a developer by choice and conviction. He has been working on the conception of enterprise-level web applications in Java and JavaScript throughout the course of his career. At ease with both the backend and frontend, Geoffroy has a strong focus on Clean Code and testability. He believes that developers should strive for readable code that delivers constant value to their customers. Pair programming and mentorship are his primary tools to promote a test-driven development approach and create great software designs. He also teaches courses on Java web stacks and is a Groovy and Spring enthusiast. Lately, he has been part of the reviewing team for Learning Spring Boot and Spring Boot Cookbook, both by Packt Publishing, which cover the latest major additions to the Spring ecosystem. Check out his blog at http://geowarin.github.io and his Twitter account at https://twitter.com/geowarin for fresh Spring and JavaScript programming tips.

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