Preparing for Technical Due Diligence
Technical due diligence requests arrive at the worst possible time — mid-fundraise, mid-acquisition, mid-everything. The engineering leaders who handle them well aren’t the ones who scramble. They’re the ones who were already prepared.
It’s common for engineering leaders to receive technical due diligence requests on behalf of an investor or for M&A purposes. In some organizations, this process leads to panic, poor results, and last-minute scrambling. It doesn’t have to. The difference between leaders who sail through diligence and those who don’t is almost always preparation — and knowing what’s actually being evaluated.
In this article I’ll walk through what investors and acquirers are really looking for, the most common mistakes CTOs make, and how to build a state of readiness before the request ever arrives. I also shared a detailed talk on this topic at ELC Annual 2020, including key excerpts from Hoola Hoop’s engineering due diligence playbook.
Watch: Preparing for Investor & M&A Technical Due Diligence
ELC Annual 2020 · Leigh Newsome, Partner & CTO Coach, Hoola Hoop
Watch the Talk → What Investors and Acquirers Are Actually Evaluating
Most CTOs assume technical due diligence is a code review. It isn’t. It’s a comprehensive assessment of whether your technology, your team, and your processes can deliver on the promises your business is making. Here’s what’s actually being examined:
01
Technical Debt
Investors want to understand the accumulation of shortcuts taken to accelerate time-to-market — and whether those shortcuts are manageable or a ticking clock. Uncontrolled technical debt signals future cost and risk. Controlled, well-documented debt signals engineering maturity. The difference matters enormously to how your valuation is perceived.
02
R&D Investment & Alignment
Is your R&D spend fueling genuine innovation or sustaining obsolete systems? Diligence teams look at whether your engineering investment aligns with your growth stage and product roadmap — and whether resources are being allocated effectively or scattered. Misalignment here is one of the most common red flags.
03
Product Validation
Does the product actually do what it claims? Investors verify that the technology performs as advertised — in terms of functionality, scalability, and security. They’ll also examine the product roadmap to assess strategic direction and whether the organization has a credible path to where it says it’s going.
04
Team Quality & Decision-Making
The quality of your technical leadership and their decision-making processes is often the most important factor. Diligence teams interview key leaders, conduct code walkthroughs, and examine architectural decisions. A skilled, well-structured team can recover from technical problems. A weak team will struggle to sustain even a strong product.
Common Mistakes CTOs Make
In my experience conducting diligence and coaching engineering leaders through the process, the same failure modes come up repeatedly:
⚠️
Treating it as a code review
Code quality matters, but diligence is a much broader evaluation — architecture, team, process, strategy, and IP. CTOs who optimize for code alone miss what’s actually being assessed.
⚠️
Waiting until the request arrives
Diligence requests come with tight timelines and high stakes. Engineering leaders who haven’t documented their architecture, debt, and team capabilities before the request scramble — and it shows.
⚠️
Hiding problems instead of contextualizing them
Experienced diligence teams find everything. CTOs who try to obscure technical debt or team gaps destroy credibility. Those who present problems with context and a clear plan build trust instead.
⚠️
Underestimating the team assessment
Investors and acquirers are often betting as much on the team as the technology. CTOs who don’t prepare their technical leaders for interviews — or can’t articulate how decisions are made — leave value on the table.
⚠️
Assuming it only matters at late stage
Technical due diligence is critical even for early-stage companies. Identifying unscalable architecture or poorly planned R&D budgets early — whether by an investor or by the CTO themselves — prevents far more costly interventions later.
⚠️
No documentation of IP and architecture
Diligence teams want to see that your technology is documented, understood, and not locked in someone’s head. Lack of documentation signals key-person risk and organizational immaturity — two things that directly affect valuation.
How to Prepare — Before the Request Arrives
The best time to prepare for technical due diligence is well before you need it. Here’s the framework I share with the CTOs I coach:
-
Audit and document your technical debt Maintain a living document of known technical debt — what it is, why it exists, and what it would cost to address. Contextualized debt is manageable. Undocumented debt is a red flag.
-
Document your architecture decisions Architecture Decision Records (ADRs) or a well-maintained architecture document show that your technology choices are intentional and understood by more than one person. This directly addresses key-person risk.
-
Align R&D spend to your roadmap Be able to show clearly how engineering investment maps to product strategy and business goals. Investors want to see that spending is purposeful, not reactive.
-
Prepare your technical leaders Your engineering managers and architects will be interviewed. Make sure they can articulate how decisions are made, how the team is structured, and how you manage quality and velocity. This isn’t coaching people to perform — it’s making sure your team can speak to what they actually do.
-
Know your IP and security posture Document ownership of your intellectual property, your security practices, and any open source dependencies and their licenses. These are standard diligence questions that should never catch you off guard.
-
Run an internal diligence exercise The most effective preparation is to conduct your own technical due diligence before an investor or acquirer does. Identify the gaps, address what you can, and build a clear narrative around the rest. This is exactly what Hoola Hoop’s engineering due diligence playbook is designed to facilitate.
The engineering leaders who handle due diligence well aren’t the ones who scramble when the request arrives. They’re the ones who were already prepared — and who can tell a clear, honest story about their technology.
Related Reading
Need help preparing for technical due diligence?
Book a 30-minute introductory call to talk through your situation.
Book a meeting with Leigh → 
Leigh Newsome
Partner, Hoola Hoop · CTO Coach Leigh Newsome is a Partner at Hoola Hoop and a CTO coach with 25 years of experience scaling product and engineering teams. He has worked with a wide range of startups and global enterprises, including Avid, Digidesign, WPP, and Kantar/Millward Brown, and successfully led TargetSpot (backed by Union Square Ventures, Bain Capital Ventures, and CBS) through its acquisition to Radionomy Group (Vivendi). When he’s not coaching CTOs, you’ll find him teaching digital audio to graduate students at NYU, building audio and signal processing applications, or flying fixed-wing aircraft — but never all three at once.
