Technical due diligence, from the founder's side
What an investor's engineering review is actually looking for.
Technical due diligence isn't a pass-fail exam on your tech stack — it's an attempt to answer one question: if this company grows ten times, does the engineering hold up, or does it become the bottleneck. Framed that way, most of what gets reviewed makes a lot more sense.
What reviewers actually look for
Reviewers look at things founders often underestimate: how much sits in one person's head versus in documentation, how test coverage looks on the parts of the system that would be catastrophic to get wrong, how deploys happen, and whether technical debt is tracked or invisible. None of these require a perfect codebase — they require an honest, legible one.
Legible beats flawless
A codebase with known rough edges, clearly documented, reads as more trustworthy to an experienced reviewer than one presented as flawless — because every real system has rough edges, and hiding them is a worse signal than naming them honestly.
The founders who do well
The founders who do well in diligence aren't the ones with flawless architecture. They're the ones who can clearly explain what's solid, what's a known tradeoff, and what the plan is for the parts that will need to change — because that answer signals engineering judgment, which is what's actually being evaluated.
- Diligence asks whether engineering holds up at 10x scale, not whether it's flawless.
- Documentation and bus-factor matter as much as code quality.
- Being able to explain known tradeoffs clearly signals more than a perfect codebase.
Hiring your first engineer vs hiring an engineering partner
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