HTML All The Things - Web Development, AI, and Developer Careers Top Mistakes That Developers Make When Building a Web App (And How to Prevent Them)
Every developer has war stories about a project that went sideways—too many abstractions, tests that didn’t catch what mattered, or a late-night deploy with no rollback plan. In this episode, Matt and Mike dig into the seven biggest mistakes teams make when building web apps and how to avoid them. From over- and under-engineering, leaving hard problems until the last minute, and wasting time in low-impact areas, to skipping security basics, ignoring observability, and neglecting CI/CD, we cover the traps that derail projects. Along the way, we share practical strategies—like building for 10× growth (not 100×), using tracer-bullet proofs of concept, scoping by impact, and shipping behind feature flags. Whether you’re launching your first SaaS or scaling an enterprise app, these lessons will help you build faster, safer, and smarter.
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