Technical due diligence

Know what due diligence will find before investors do.

Fundraising and acquisitions put your codebase under a microscope. Nothing in that report should be a surprise to you.

For founders preparing for investment or acquisition.

Founders preparing for a funding round or acquisition who want to find and fix codebase problems before technical due diligence does.

What technical due diligence actually checks

Reviewers look at code quality and structure, test coverage, security posture, dependency health, key-person risk, and increasingly how much of the codebase is AI-generated and how it was reviewed. They're estimating one thing: how expensive will this be to own?

Surprises are the real risk

Findings rarely kill a deal on their own. Surprises do. A known risk with a remediation plan reads as competence; the same risk discovered by the other side's reviewers reads as either concealment or ignorance — and both reprice the deal.

How Qualyn helps

Qualyn continuously reads the evidence in your repo — tests, coverage, findings, risks, release history — and keeps an explainable, auditable picture of its health. Walk into due diligence already knowing the report, with the fixes underway.

Signals that should shape the release decision.

Qualyn reads the evidence teams already discuss and turns it into a release call that can be inspected before production.

Test evidence and coverage across the codebase
Open security findings and their severity
Dependency health and known vulnerabilities
AI-generated code exposure and how it was reviewed
Risky areas and their change history
Documented risks with owners and mitigations
Release history: incidents, rollbacks, escaped defects

Common questions

What do investors check in technical due diligence?

Code quality, architecture, test coverage, security posture, dependency and licence health, scalability, key-person risk, and the team's development process. For AI-assisted codebases, reviewers increasingly ask how generated code was reviewed and tested.

How do I prepare my codebase for due diligence?

Build the evidence picture before they do: current test and coverage state, resolved or documented security findings, healthy dependencies, and a written risk register with owners. Fix what you can; document honestly what you cannot.

Can bad code kill a funding round or acquisition?

Occasionally — but undisclosed problems are the more common killer. Known technical debt with a credible plan is priced in; discovered technical debt triggers repricing, escrow demands, or walked deals.

What red flags do acquirers look for in a codebase?

No meaningful tests, unresolved security vulnerabilities, heavily outdated dependencies, licence contamination, a single developer holding all knowledge, and release history full of incidents and rollbacks.

When should founders start preparing for technical due diligence?

Six months before you need it, minimum — coverage, findings, and process evidence cannot be backfilled in a week. The cheapest option is to keep the evidence continuously current so preparation is a non-event.

Does AI-generated code hurt valuation?

Not by itself. What hurts is AI-generated code without evidence of review and testing, because the acquirer has to price in re-verifying it. Documented review, tests, and findings around generated code neutralise the concern.

Give your next release a clear call.

Connect GitHub and turn release evidence into a clear answer: safe to ship, why, and what would change the answer.

Analyse your first repo