Technical Due Diligence Checklist Before a Funding Round
Written by
Bhalli B
Full-Stack Engineer & SaaS MVP Architect
Certified Full-Stack Developer & MVP Specialist · Lahore, Pakistan
Technical due diligence is the process where an investor's technical reviewer examines your codebase, infrastructure, and IP ownership to confirm the company they're funding actually owns and can scale what it claims to have built. Getting caught unprepared doesn't usually kill a deal outright - it delays it, and every week of delay is a week of burn with no new capital in the bank, which is the real cost this checklist protects you from.
1. What Do Investors Actually Check in Technical Due Diligence?
Technical due diligence at seed and Series A stage typically focuses on four things: does the code actually work as claimed, do you legally own it, can it handle real growth, and is there anything a security review would flag as a serious risk. It is rarely a line-by-line code review - it's a risk assessment.
The depth of the review scales with the round size. A $500K seed round might get a 30-minute technical call; a $5M+ Series A often brings in an outside technical reviewer who spends days going through your repository, infrastructure, and contracts.
2. Codebase Health: What Reviewers Actually Look For
What this costs you if you get it wrong: a codebase that "works" in a demo but has no tests, no documentation, and no clear ownership history reads as high risk to a technical reviewer, even if the product itself is genuinely good.
- Version control history. A real, continuous commit history under the company's own GitHub organization - not a single "initial commit" dump - signals the code was actually built the way you're describing.
- Test coverage on critical paths. Reviewers don't expect 100% coverage, but zero tests on billing or auth logic is a common flag.
- Dependency health. Outdated, unmaintained, or unlicensed third-party packages get flagged quickly by any competent technical reviewer running a standard audit.
3. Security and Compliance: The Real Deal-Killers
In practice, this means security issues are one of the few technical due diligence findings that can actually kill a deal outright, rather than just delay it, because they represent liability the investor would be inheriting.
- Secrets committed to the repository. API keys, database credentials, or
.envfiles accidentally committed to version control are one of the most common - and most alarming - findings in a technical review. - No access control audit trail. Who can access production data, and is that access logged? "Everyone on the team has the database password" is a real answer reviewers hear more often than you'd expect, and it's a genuine red flag.
- Missing compliance basics for your industry. A healthcare or fintech SaaS with no documented approach to HIPAA or PCI-relevant handling gets scrutinized far harder than a generic B2B tool.
4. Infrastructure and IP: Can It Scale, and Do You Actually Own It?
As a Certified Project Manager who's helped founders prepare for exactly this kind of review, the IP ownership question surprises more founders than any other item on this list - it's common to find that an early contractor never signed over IP rights in writing, which becomes a real problem the moment a reviewer asks for it.
- Clear IP assignment from every contributor. Every freelancer, contractor, or early technical co-founder should have a signed agreement assigning IP to the company - not a verbal understanding.
- Infrastructure that isn't a single point of failure. One personal AWS account under a founder's individual login, with no company-level access, is a common and easily-fixed red flag.
- A realistic scaling story. Reviewers aren't expecting infrastructure built for ten million users on day one - they're checking whether the current architecture has an obvious, near-term ceiling nobody's planned for.
5. Due Diligence Depth by Round Stage
| Round Stage | Typical DD Depth | Primary Focus |
|---|---|---|
| Pre-seed / Seed | Light - a 30-60 min technical call | IP ownership, does the demo actually work |
| Series A | Moderate - repo access, a few days of review | Codebase health, security basics, scaling story |
| Series B+ | Deep - outside technical firm, 1-2 weeks | Full security audit, compliance, infra cost efficiency |
6. Unprepared vs. Prepared Going Into DD
A founder heading into a Series A discovers mid-diligence that an early freelance developer never signed an IP assignment agreement, and the round stalls for three weeks while lawyers track the contractor down for a retroactive signature.
The gap itself was fixable - the cost was entirely the delay, and the uncomfortable position of negotiating from a documented weakness.
The same founder runs this checklist two months before opening the round, finds and fixes the same IP gap quietly, and walks into diligence with a clean answer to every question on this list.
Every item on this checklist is cheap to fix in advance and expensive to fix under investor scrutiny with a term sheet on the table.
D = W × B
7. Conclusion and Actionable Roadmap
Technical due diligence isn't designed to catch startups out - it's a risk check, and most items on it are cheap and fast to fix when you find them yourself, months before an investor does. Run this checklist against your own codebase, IP agreements, and infrastructure well before you open a round, not during it.
Get a technical readiness review before you raise: I run pre-funding technical audits as an independent full-stack developer - codebase health, IP gaps, and infrastructure risk, flagged and fixed before an investor ever sees them. Contact me today to book a 30-minute technical due diligence prep call.
