What makes a world-class CTO/CIO?

It’s far rarer, and far harder, than most people realise.

It is not a straight line. You build, break, learn and rebuild. You make poor decisions, or ones that don’t land. You back the wrong people and fight the wrong battles. Those experiences, not the job titles, are what produce judgement and leadership.

Startups often assume a “CTO” is simply an engineer who can code the best, and communicate well enough with non-engineers. But that’s a founding engineer, not a world-class CTO/CIO. The role is a combination of traits that rarely coexist in one person:

Deep and broad technical mastery across architecture, platforms, data, systems, security and AI,

Architecture + systems thinking, not just shipping features,

Emotional intelligence and maturity under pressure,

Strong people leadership: inspiring, aligning, resolving conflict, building culture,

Commercial and entrepreneurial instinct to focus on value, not vanity,

Change and transformation capability, because organisations don’t move just because tech improves,

Security, compliance and risk fluency in an environment where the stakes rise every year.

The combination is rare, which is why the role is often misunderstood, overloaded, or lonely.

With AI, the role matters more than ever. Prototypes and demos are easy; scaling AI safely and sustainably requires foundations:

data quality,

governance,

operating models,

security,

real adoption,

and leadership that knows when to slow down.

The role also differs by context. For example:

Startups might need a product-driven technical generalist,

Scaleups might need an architect and organisational stabiliser,

SMEs might need a commercial moderniser,

Enterprises need a strategist who can work through legacy, politics and complexity.

Very few people can operate across all four contexts.

The best CTOs and CIOs keep changing as technology, teams and expectations shift, and they leave the organisation stronger, safer and more capable than they found it.