Mark Holt - CTO, Trainline

What's your proudest work-related achievement of the last 12 months?

The team, process and infrastructure that (even given our huge scale) enable us to release thousands of micro-optimisations every month. This constant refinement of our customer experience means that, during rush hour this morning, 671,034 people chose to use the Trainline app to help them get to work.

What's the number one skill today's IT leaders need?

Bringing a tech lens to the commercial and strategic debates is important, but the number one skill is the ability to build effective teams to deliver against the business's mission. Our job is to work ON the team, not IN the team: constantly iterating to ensure that we have the right people and the right roles.

How many people work in IT in your organisation?

300.

What's your top priority for the next 12 months?

We have a super-exciting roadmap for the next 12 months, but my priority is to keep supporting the teams who iterate our products: ensuring we constantly reduce anything that slows them down or prevents them being effective.

What's your annual IT budget?

Confidential.