How Side Projects Generate Outsized Technical Debt
Technical debt is the accumulated cost of shortcuts taken during software development. Every team carries some technical debt—it is a natural part of building software. But executive side projects generate disproportionate technical debt because of two compounding factors: rushed timelines and divided attention.
When your team is building your side project alongside their regular workload, they cut corners to manage both responsibilities. Tests are skipped. Documentation is omitted. Architecture decisions are expedient rather than sound. Each shortcut is a small debt that accrues interest over time.
The debt accumulates in both codebases—your core product and your side project. Your core product suffers because engineers rushing to make time for the side project skip the quality practices that keep code maintainable. Your side project suffers because it is built by engineers who are cognitively exhausted from managing two projects simultaneously.
The Compounding Interest on Technical Debt
Technical debt compounds like financial debt. A skipped test suite today means bugs that take 10x longer to find six months from now. A poorly designed database schema today means a costly migration when you need to scale. An undocumented API today means hours of reverse-engineering when a new team member joins.
Studies estimate that technical debt slows development velocity by 23% on average across the industry. For teams carrying heavy debt from rushed side project development, the impact can reach 40-50%. This means that for every two hours of productive development time, one hour is consumed by working around or paying down past shortcuts.
The compounding effect is particularly devastating because it is invisible to executives. The team does not report "we spent 15 hours this sprint dealing with technical debt from the CEO's side project." The hours simply vanish into slower velocity, more bugs, and longer timelines for everything.
Avoiding the Debt Entirely
The cleanest way to avoid side project technical debt is to build externally. A dedicated development team working on your side project has no reason to cut corners—it is their only project, they have appropriate timelines, and their professional reputation depends on quality delivery.
External development partners like Sizzle also bring established quality practices—automated testing, code review, CI/CD pipelines—that may exceed what your internal team applies to rushed side work. The result is a cleaner codebase that is cheaper to maintain and easier to extend.
If you eventually bring the side project in-house, a well-built external codebase is a gift to your future engineering team. A debt-laden codebase rushed out by your overextended internal team is a burden they will curse for years. Choose the gift.
Ready to Build Your Side Project?
Executives across every industry are turning side project ideas into real products—without pulling a single engineer off their core team. The key is working with a partner who understands both the technical execution and the strategic context of building alongside a day job.
Sizzle Ventures helps executives go from idea to launched product in as little as 90 days. Our MVP Sprint is built specifically for leaders who need speed without sacrificing quality—and without touching their internal dev team.
Ready to explore what's possible? Start a conversation with Sizzle about bringing your side project to life.