Investors are not grading your code. They are pricing the risk that technology stops the plan they are funding — and founders who understand that prepare very differently.
Founders preparing for technical due diligence often polish the wrong things — tidying code, writing documentation nobody asked for, worrying about framework choices. Investors are asking a different question entirely: what could go wrong with the technology that would stop this company from reaching the milestones in the plan?
The four things that actually get assessed
1. Can it scale to the plan (not to infinity)
Nobody expects a Series A company to have Google's architecture. The question is narrower: does the system survive the specific growth in the model, and if not, what does raising that ceiling cost? A clear, costed answer is a strong signal. "It should be fine" is not.
2. Key-person risk
Frequently the most decisive finding, and the one founders least expect. If one engineer holds all critical knowledge, the investment carries a risk that has nothing to do with code quality. Investors probe this directly: who else could operate this system next week if that person left?
3. Whether the technology is actually yours
- Contractor work without signed IP assignment — a legal problem that can delay or kill a close
- Open-source licence contamination in a proprietary product
- Critical dependence on a vendor that could reprice, restrict, or disappear
- How much of the "proprietary technology" is a thin layer over someone else's API
4. Delivery capability
This predicts the next two years better than the current state of the codebase. Investors look at deployment frequency, how changes reach production, whether incidents are detected internally, and whether the team can absorb the hiring the plan assumes.
How to prepare (in the four weeks before)
- Write an honest technical risk register — what is weak, what it blocks, what remediation costs. Volunteering this reads as competence; being caught hiding it reads as the opposite.
- Fix anything in the money-and-data category first — those are the findings that become deal conditions.
- Close IP gaps: signed assignments from every contractor, licence review of dependencies.
- Reduce bus factor visibly — pair someone onto the critical system, write the architecture decision record.
- Prepare a clear architecture walkthrough: what it is, why, where it breaks, what the plan is.
How findings translate into terms
| Finding | Typical outcome |
|---|---|
| Money can be silently wrong (no ledger) | Remediation funded in the round; sometimes tranched |
| Cross-tenant data exposure | Closing condition — fix before funds are released |
| Unclear IP from contractors | Legal remedy required before close |
| Bus factor of one | Retention package, or hiring commitment in the plan |
| Manual deployment, no rollback | Costed into the post-close 90-day plan |
| Aging dependencies, thin docs | Noted, no consequence |
Investors do not expect a perfect system. They expect a founder who knows precisely which parts are imperfect and what it costs to fix them.
Connect each technical finding to a decision
Investors need to know which assumptions remain credible and what changes the plan. Present uncertainty alongside remediation effort instead of hiding it in a score.
- State the business assumption and the evidence tested.
- Describe the consequence, uncertainty and remediation dependencies.
- Separate a deal condition, a budget item and an accepted risk.
Frequently asked questions
How long does investor technical due diligence take?
Typically one to two weeks for a Series A, longer for fintech, healthtech, or unusually large systems. It usually involves repository access, an architecture walkthrough, and interviews with the engineering team.
Should founders run their own technical audit before raising?
Often yes. Findings you surface yourself become a remediation plan you control; the same findings surfaced by the investor's advisor become a negotiating position against you. The cost of a pre-raise audit is small relative to the valuation impact it can prevent.
Will messy code kill our round?
Rarely on its own. Deals are affected by findings with consequence — money integrity, security exposure, unclear IP ownership, and key-person risk. Investors have seen every codebase's imperfections; what concerns them is a team that cannot describe their own risks accurately.
Is a single technical score enough for an investment decision?
No. A score can summarise but conceals scope and uncertainty. Include material findings, unavailable evidence and the assumptions behind remediation estimates.
Raising soon?
We run the diligence before your investor does — so the findings come with your remediation plan attached.
Further reading
Technical Due Diligence for Investors: The Complete Guide
Technical due diligence is not a code review. It is an answer to one question: what will it cost to get this technology where the investment thesis needs it to be?
Pre-Investment Code Audit: What to Ask For Before You Wire
You are about to buy a share of an asset you have not inspected. A code audit is the inspection — but only if it is scoped to answer investment questions rather than engineering ones.