Head of Data Jobs

Head of data jobs on carbon.talent, along with director of data, head of analytics and similar leadership roles, on full-time and fractional terms. Data leaders set strategy, build teams, choose platforms and, most of all, get an organisation to use data in real decisions. The title means different things at a forty-person start-up and a large enterprise. This guide covers what these roles involve, how leadership interviews work, and why fractional data leadership has grown.

Open roles

A head of data is accountable for whether data helps the business. That covers strategy, the team, the platform, governance and the relationship with leadership. In smaller companies the head of data may still write SQL and build models; in larger ones the role is mostly hiring, prioritising, budgeting and influencing. Read the listing for team size and reporting line to judge which version you are looking at.

Strategy questions dominate interviews. You may be asked what you would do in your first ninety days, how you would prioritise competing requests from sales, product and finance, or how you would decide whether to build or buy a platform. Strong answers start with listening and diagnosis, set a small number of measurable goals and show how data work connects to revenue, cost or risk.

Team building is the next theme. Expect questions about the first hires you would make, how you structure analysts, engineers and scientists, centralised versus embedded models, career ladders, and how you handle underperformance. Data leaders who can describe teams they built and people they developed stand out from those who only describe technology.

Platform choices matter but are rarely the hardest part. Leadership panels want to know you can choose a stack that fits the company's size and skills, manage its cost, and avoid rebuilding every two years. Be ready to explain a platform decision you made, the alternatives you rejected and the outcome.

Governance and trust underpin everything else. Agreed metric definitions, data quality ownership, access controls and compliance with privacy law are the foundations that let leaders rely on numbers. Experience introducing governance without slowing the organisation down is valuable and worth describing concretely.

Fractional heads of data are increasingly common in companies that need senior judgement but not a full-time leader yet. A fractional leader might spend one or two days a week setting strategy, hiring the first team members and choosing tools, then hand over to a full-time hire. These roles suit experienced leaders who enjoy variety and can deliver clear direction in limited time.

Questions to ask before joining: who the role reports to and how often you meet the leadership team; what budget you control; which decisions leadership wants data to change; and what has been tried before. A head of data without leadership access or budget struggles to deliver, however good the team.

Prepare evidence for leadership interviews: a short strategy document from a past role with confidential details removed, a team structure you designed, and two or three stories of decisions changed by data. Measured outcomes carry the most weight.

Common mistakes for new heads of data include trying to fix every data problem at once, building a platform before agreeing priorities with leadership and hiring specialists before generalists. Successful leaders pick two or three outcomes that matter to the business, deliver them visibly and build the team and platform around those wins.

Questions to ask in interviews include who the role reports to, how data is represented at leadership level, what budget and headcount are available, which decisions the company wants data to improve and what has been tried before. The answers show whether the organisation is ready to act on data or expects a single hire to change its culture alone.

The first ninety days matter. New heads of data who listen widely, publish a short diagnosis and agree a small number of priorities with the leadership team tend to build credibility faster than those who arrive with a fixed plan. Bring an example of how you approached a previous start.

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Questions

What does a head of data do?

Sets data strategy, builds and leads the team, chooses platforms, establishes governance, and makes sure data informs business decisions.

What is a fractional head of data?

A senior data leader working part of the week, often one or two days, for a company that needs strategic direction but not a full-time leader yet.

What do head of data interviews focus on?

First-ninety-day plans, prioritisation, team building, platform decisions, governance and evidence of business impact.

Is a head of data still hands-on?

In small companies, often yes. In larger organisations the role is mostly leadership, hiring and stakeholder management.