A Decade in Software Engineering: Key Lessons From Banking, Gov and Tech Projects

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A full-stack software engineer with ten years of experience reflects on lessons learned while building systems for a bank, Georgia's Ministry of Healthcare, major online marketplaces, and an international reinsurance platform. The engineer argues that mastering fundamentals like HTTP, database indexing, and problem modelling outlasts any specific framework, as tools are routinely replaced across the industry. Most serious performance issues encountered across sectors traced back to data problems — poor indexing, inefficient queries, or poorly designed schemas — rather than frontend or application logic. Breadth as a full-stack developer proved valuable not for technical superiority in any one area, but for the ability to trace problems across an entire system and resolve disputes between siloed teams. The engineer also highlights that reading and understanding unfamiliar codebases is a critical but underrated skill rarely taught formally, yet essential in real-world engineering roles.

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