For family offices and angel investors

Technical due diligence for family offices and angel investors

Before you invest in a tech company, our fractional CTOs check whether the technology does what the pitch says, and whether the team can deliver what your investment is meant to achieve. Every issue we find comes with a prioritised plan to fix it.

See a sample report

Under NDA. Fixed quote. Report in 2 to 4 weeks.

What is technical due diligence for investors?

Technical due diligence is an independent review of a company’s code, infrastructure, security, AI claims and engineering team before you invest. It answers two questions. Is the technology what the founders say it is? And can this team deliver the scale and goals your investment is meant to achieve? Where the answer is no, you get a concrete, prioritised plan for what has to change so that it becomes yes.

Private investors are doing more tech deals, with fewer people to check them

Family offices are writing direct cheques into technology companies, often with small teams and no one technical in-house. Angels mostly check deals themselves, in a few hours.

64%

of single family offices expect six or more direct investments in the next 12 months1

58%

of single family offices have fewer than 20 employees1

5–10 hrs

of due diligence per deal for most members of a UK angel group, with no outside experts3

40%

of European startups classed as “AI” showed no evidence of using machine learning (2019)5

“Not all family offices have yet built up the familiarity or institutional experience required to identify potential investees or evaluate deals effectively and at pace.”
BNY Wealth, 2025 survey of single family offices source
“I don’t have time to do due diligence, so I want to go in with a group of people … if everyone likes it and they’re all intelligent people I’ll go in on the back of them.”
Member of a UK business angel group, quoted in Arundale and Mason (2024) source
“He was doing some direct stuff in spaces where he had no expertise.”
Family office panellist, describing a peer, Institutional Investor (2025) source

It has happened to very experienced money

Families, banks and leading funds have lost money on technology that was not what it seemed. For each case below: what was claimed, what turned out to be true, and what a technical review checks.

Theranos

The Walton, DeVos, Cox and Murdoch families were among investors who lost over $600m in total.

Claimed
Blood tests from a finger-prick, on its own devices.
What came out
The technology did not work as claimed. The DeVos family office’s managing director testified that its due diligence relied on two binders sent by Theranos and a report carrying Pfizer’s logo.
What a technical review checks
Independent evidence that the technology works, rather than documents supplied by the company.

sourcesource

Frank

Bought by JPMorgan for $175m in 2021.

Claimed
More than 4 million customers.
What came out
Fewer than 300,000. The founder was convicted and sentenced to more than seven years. The judge said of the buyer: “they have a lot to blame themselves”.
What a technical review checks
User records at database level: activity, sign-up dates, duplicates. A spreadsheet export is not evidence.

source

Builder.ai

London-based. Raised over $450m from backers including Microsoft and Qatar’s sovereign wealth fund.

Claimed
AI that builds apps.
What came out
Entered insolvency proceedings in May 2025 after its revenue figures were revised down. One adviser said the exaggeration “should have been obvious to anyone who looked properly”.
What a technical review checks
How the product is actually built and delivered, compared with the claims in the deck.

sourcesource

FTX

Sequoia wrote its $213.5m stake down to zero. Equity investors had put in more than $1.8bn.

Claimed
Best-in-class controls, including a proprietary “risk engine”.
What came out
The SEC alleged that FTX’s sister trading firm was exempt from the key risk controls FTX promoted to investors.
What a technical review checks
Whether the controls described to investors exist in the code, and who can bypass them.

sourcesource

Nate

Allegations

An AI shopping app that raised over $50m from venture investors.

Claimed
Purchases completed automatically by AI.
What came out
The US Department of Justice alleges purchases were completed by contractors in a call centre and that real automation was “effectively 0%”. These are allegations, not findings.
What a technical review checks
Whether the AI is real: what runs in production, and what is done by people.

source

Synapse

A venture-backed fintech platform serving other fintech apps.

Claimed
Reliable infrastructure for holding customers’ money.
What came out
Its bankruptcy trustee found an $85m shortfall between customer balances and the funds banks held. More than 100,000 customers were locked out.
What a technical review checks
How money is recorded and reconciled: the ledger, and whether it matches the bank.

source

I don’t want this to happen to me

Talk to a CTO about the company you are looking at, before the money moves.

What we check

The questions a technical co-investor would ask, answered with evidence.

Code and architecture

Is it built to grow with the business, or will it need rebuilding after your money goes in?

Is the AI real?

What runs in production, what is a third-party service, and what is done by people behind the scenes.

Security and compliance

Security weaknesses in the architecture, code and deployments, data leaking where it shouldn’t, and gaps against the regulations that apply to the business, such as UK GDPR. Penetration testing can be arranged separately through our security specialist partners.

Who controls what

Whether the company owns its code, cloud accounts and app store listings, or an agency or one employee does.

The team and key people

Who really understands the system, and what happens if they leave.

Can it deliver the plan?

Whether the technology and team can reach the scale and goals the investment is meant to fund, what it costs to run today, and what it would take to get there.

What you receive

Written for the person making the decision, with the detail behind it for anyone who wants it.

A summary for the principal

Two pages, in plain English. The technical risks, how serious each one is, and what it would take to fix.

The evidence behind it

A detailed report with screenshots of the code, infrastructure and configuration, for your advisers or the company’s team.

An action plan, not just a list of problems

Every issue is concrete and prioritised, with the steps to resolve it: what to require before completion, and what to do in the first 100 days.

A call to walk you through it

We go through the findings with you, and with the founders if you want us to.

See what you would receive

An anonymised, shortened sample report, based on a real engagement for an investor. It covers who controls the systems, the cost of the current setup, performance, the AI claims, security, and what to require before completion.

How it works

  • Step 1

    Confidential call

    Tell us about the company and the deal. We’ll tell you whether a review is worth it at your cheque size.
  • Step 2

    NDA and fixed quote

    An NDA and services agreement are in place before anything is shared. You get a fixed price and a timeline, typically 2 to 4 weeks depending on size and complexity.
  • Step 3

    The review

    Fractional CTOs and developers with expertise in the company’s tech stack review the code, systems and team.
  • Step 4

    Report, plan and walkthrough

    You get the summary, the full report and a prioritised action plan, and we take you through it. Our copies of the company’s material are deleted after delivery.

How we keep it confidential

NDA first

A proper NDA and services agreement are signed before the company shares anything.

Nothing kept afterwards

Copies of the company’s code, documents and data are deleted once the report is delivered.

How much does it cost?

A fixed price, agreed before we start.

Technical due diligence

£5,000 to £25,000

Depends on the size of the codebase, team and project. Fixed quote after a free call. Typically 2 to 4 weeks.

Board oversight after you invest

£500 a month

Optional. We attend two board meetings a month (up to two hours in total), oversee what has to change and guide the team. Flexible monthly retainer.

Prices exclude VAT. Need more hands-on support for a portfolio company? See our fractional CTO service.

Looking at a tech investment?

Talk it through with a CTO before you commit, or see exactly what a report looks like first.

What clients say about our technical reviews

See what our clients have to say.

“Lev was able to tailor his service offer to the specific needs we had at the time. His advice was invaluable and provided a good "second pair of eyes" to validate and enhance our proposed approach to our IT development and structure. We look forward to working with Lev again”

Max Pell

Chief Administrative Officer, Fennech

“We've worked with Lev and Metamindz for several months, both in a fractional CTO role and on recruitment. They've been excellent throughout, responsive, easy to work with, and highly capable. I couldn't recommend them enough” source

Jacob Hinson

Google review

“I would highly recommend Lev as a fractional CTO. What truly sets him apart is his rare combination of deep technical expertise and business acumen, coupled with a genuine investment in seeing others succeed. His ability to assess technical challenges and architect solutions while considering the broader business context has been invaluable. One of Lev's standout qualities is how he meets you exactly where you are - whether discussing early-stage challenges or complex architectural decisions, he tailors his guidance to your specific business stage and needs. What's particularly impressive is his commitment to giving honest, practical advice, even when it doesn't directly benefit him - a testament to his integrity and long-term perspective. His talent for translating complex technical concepts into clear, actionable insights for non-technical stakeholders is remarkable. In every interaction, Lev brings clarity and strategic direction that helps navigate both immediate technical decisions and long-term architectural planning.” source

Aeva Health

Google review

Hear directly from Tanya Mulesa, Founder of CICON.app, about her experience working with Metamindz.
Transcript

Hi, my name is Tanya Mulesa, and I'm the founder of tech startup Cicon App. And we have been working with Metamindz and Lev Perlman, and we're absolutely happy with the service. Um, we have worked with him on the technical setup of the app, technical due diligence. Lev was mentoring our team and helped to quickly implement all the necessary changes and debugging. We are very happy. The service was quick, actionable, effective, and we're very grateful for it. Thank you very much.

Tanya Mulesa

Founder, CICON.app

Frequently Asked Questions

No. We give you the technical facts your decision depends on: what we found, how serious it is and what it would cost to fix. Whether to invest, and on what terms, is your decision with your financial and legal advisers.

An NDA is in place before anything is shared, and our copies of the company’s code, documents and data are deleted once the report is delivered.

Typically £5,000 to £25,000, depending on the size of the codebase, team and project. We give you a fixed quote after a free call, so the price doesn’t move once we start.

Typically 2 to 4 weeks, depending on the size and complexity of the company’s technology. We agree the timeline with you before we start.

Both. Every issue in the report is concrete and prioritised, with an action plan for resolving it. We can walk the founders and their team through the plan, and stay involved after you invest if you want us to.

Sometimes not, and we’ll say so on the first call. It makes most sense for larger direct investments, for follow-on rounds, or when several angels in a syndicate share the cost of one review.

Yes. We look at what actually runs in production: whether there is a model the company owns, a third-party AI service, a set of rules, or people doing the work behind the scenes. We also check how personal data is passed to any AI service.

We can still assess a lot from live systems, documents, interviews and the way the product behaves. Anything we can’t verify is written as an open question rather than a finding, so you can see exactly what is unknown. A refusal to share code is itself worth knowing before you invest.

Ask to see the lead investor’s technical due diligence first. If it covered the code, security and team in depth, you may only need a short review of the gaps. If there wasn’t one, you are relying on nobody having checked.

Our team of fractional CTOs and developers, chosen for expertise in the specific technology the company uses.

Yes, as an optional extra at £500 a month. We attend two board meetings a month (up to two hours in total), oversee the changes the report recommends and guide the team. It is a flexible monthly retainer. For more hands-on support, see our fractional CTO service.

Talk to a CTO before you invest

Tell us about the company and the deal. Everything you share stays confidential.

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