When to hire a CTO, and when not to.

The question is rarely whether you will need one. It is whether the cost of not having one has passed the cost of having one. Here is how to tell.

Nine signals you have waited long enough

• Every technical decision routes through you, and you are not technical. You are approving choices you cannot evaluate, and everyone in the room knows it.
• Delivery estimates keep doubling. Not once, as a pattern. That is usually an architecture problem wearing a scheduling costume.
• You cannot tell whether your developers are good. You like them. You have no idea whether the work is competent. Nobody in the business can tell you.
• The cloud bill grows faster than revenue. Nobody owns that number, so it grows.
• A customer sent a security questionnaire and it stopped the deal. Enterprise buyers ask this early now. Guessing at the answers is visible.
• You are heading into a raise or a sale. Technical due diligence will find whatever is there. Better that you find it first.
• An agency is quoting six figures and you have nobody to check the quote. Reading that quote properly pays for a year of advice.
• Your best developer has become a single point of failure. One person holds the knowledge, and everyone quietly hopes they do not resign.
• Roadmap conversations end in vibes. Priorities move with whoever spoke most recently, usually the loudest customer.

Three or more of these at once and the decision has already been made for you. The only remaining question is fractional or full-time.

Three signals you should wait

• You have not found the product yet. Before product-market fit, the job is finding customers, not building a platform. A technical leader hired too early builds beautiful infrastructure for a product that changes next quarter.
• The technology is genuinely simple. A website, a payment link and a spreadsheet is not an engineering organisation. Do not manufacture one.
• You cannot fund eighteen months of it. Hiring a senior leader you have to let go in nine months costs more than the salary. It costs the team.

What a technical co-founder does not solve

Founders often answer this question by looking for a technical co-founder instead. Sometimes that is right. But equity is the most expensive currency you have, it does not come back if the fit is wrong, and a strong builder is not automatically a strong leader. Giving away fifteen per cent of the company to avoid a monthly invoice is a decision worth making slowly.

What to do in the next fortnight

1. 1Write down the last five technical decisions and who actually made them. If the honest answer is nobody, that is your answer.
2. 2Add up what technology cost you last quarter: developers, agencies, cloud, licences, tools. Most founders are surprised by the total.
3. 3Ask what you would do tomorrow if your main system went down for a day. If there is no answer, that is a risk, not an oversight.
4. 4Get an independent read on what you have built before you spend more on it.

If the answers make uncomfortable reading, that is normal and it is fixable. The businesses that get hurt are the ones that keep spending without ever asking.