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Discover how to transform your perspective on legacy system maintenance in this 27-minute conference talk from LDX3 London 2025. Learn why working with long-running production applications, even those in "limp home mode," can be more valuable for your engineering growth than greenfield projects. Explore the unexpected benefits of troubleshooting code you didn't write, including building confidence in unknown territories, understanding black-box systems, and developing the ability to predict and prevent failures in new implementations. Understand how legacy system work develops crucial skills for any engineer's growth journey while learning strategies to bring less experienced team members along. Gain insights into fostering team excitement around production system maintenance, demystifying the myth that good applications never fail, and developing compassion for both your own code and others'. Master three essential skills for making sense of and managing legacy systems while discovering how shared responsibility for production maintenance enhances teamwork and empathy across engineering teams.
