Fractional CDO · Chief data officer, part of the week

Fractional chief data officer · what one does, what one costs, when you need one

A fractional chief data officer is a CDO who holds the data seat for an agreed part of the week, on an ongoing basis, often for more than one company. They own the data strategy, data governance, data quality and who may use which data for what, and answer to the CEO and board for it, without a full-time appointment.

This page explains the role: the week, the cost, and how a fractional CDO compares with an interim CDO, a head of data or a full-time hire. To hire a fractional CDO or browse fractional CDO jobs, go to the hub; the long-form hub lists fractional chief data officer jobs. We recruit fractional, interim, part-time, temporary and permanent data leaders.

Brief us on a CDO hire →See the roles

How a brief runswhat we undertake

01Brief30-MINUTE SCOPING CALLDay 0
02Shortlist of 3–5VETTED · RATE BENCHMARK · IR35After the brief
03InterviewsYOU MEET THE SHORTLISTYour diary
04Scoped startFIRST-MONTH OUTCOMES AGREEDYou set the date
05Fractional, interim and permanentIR35 POSITION SET OUTOn every brief

Shortlist3–5

3–5

Shortlist · with pay or day rate, availability and IR35 set out

Vetting · stages before a candidate reaches you

£110,250

Full-time CDO salary, median · 50th percentile, base

Robert Half, 2026

£150,000

Full-time CDO, London median · 50th percentile, base

Robert Half, 2026

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Tell us the scope and the days a week. We come back with CDO candidates, their day rates and availability.

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02We scope the role and the days a week
03A shortlist of 3–5 after the call
04Fractional, interim and permanent briefs

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On the board · last 3 months

Fractional chief data officer jobs on the board

0 Fractional chief data officer · 9 fractional executive

No Fractional chief data officer roles on the board in the last three months. Showing fractional executive roles instead.

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Live data and technology leadership roles

Fractional Quest is a fractional recruitment agency: send a CDO brief and we come back with a shortlist of three to five vetted candidates.

01/ the role

What is a fractional chief data officer?

A fractional chief data officer is a CDO engaged for part of the week, on an ongoing basis. “Fractional” describes the days, not the seniority: the person holds the data seat in full and answers for it to the board, for an agreed number of days rather than five. The fractional CDO meaning in one line: the whole data brief, part of the week.

The government’s Digital and Data capability framework describes the senior version of the seat: a chief data officer ensures the organisation can use data to make better decisions, sets the vision and strategy for data, improves its quality, makes sure it is used ethically and within the rules, and works with cyber security so data stays secure while staying accessible. The same tasks apply in a company; a fractional CDO does them on fewer days.

CDO, CIO or data protection officer?

A CIO owns the systems the business runs on; a fractional CIO is the part-week version. A CDO owns the data those systems hold and what it means. A data protection officer is a separate, independent role: the ICO says a DPO must be independent, an expert in data protection and report to the highest management level, and any other duties must not create a conflict of interest. A CDO who decides how personal data is used should not also be the DPO; see fractional DPO jobs. For the permanent seat, see chief data officer.

02/ scope

What a fractional CDO does, week to week

The first month

An inventory of what the business holds: where its data comes from, which systems keep it, who relies on which figures, where two reports disagree, and what personal data sits where. The output is a short data strategy the leadership team can agree, with named owners for each data domain and a list of what to fix first.

Ownership and governance

Most data problems are ownership problems. The government’s data ownership model puts it plainly: data ownership is not about possession, it is about formalising the roles of the people responsible for data through its life cycle. A fractional CDO sets those roles up, and the policies on access, retention and quality that go with them.

A typical week

The leadership meeting, a review with the data and analytics team, decisions on platform and supplier questions, progress against the data-quality plan, and the requests from the business that need a yes or a no. Days are agreed in the contract and change with the work. Building pipelines and dashboards stays with data engineers and analysts; the CDO decides what they build and checks it.

Data, AI and the law

Using data for AI raises the same questions in sharper form: whether the business may use the data, whether it is accurate, and how a decision can be explained. The Data and AI Ethics Framework sets out principles for the public sector that private companies borrow, and the ICO’s guidance on the Data (Use and Access) Act 2025 explains how the Act amends UK GDPR, the Data Protection Act 2018 and PECR. Where the AI programme needs its own owner, see the fractional chief AI officer.

03/ comparison

Fractional, interim, head of data or a full-time CDO

Four ways to give data a senior owner. They differ in days, length and seniority; choose by how much of the week the work fills.

Fractional CDOInterim CDOHead of dataFull-time CDO

DaysPart of the weekFull-timeFull-timeFull-time

LengthOngoing, reviewed as the work changesA fixed term, often one programmePermanentPermanent

SeniorityThe executive seatThe executive seatOne level below, usually runs the teamThe executive seat

Best forSenior data judgement the business cannot yet fill a week withA data programme, a departure or a deal that needs someone every dayA data team that needs a hands-on managerData that needs a daily owner at board level

Published payDay rate × days, set out per candidateDay rate × days, usually five a week£75,750 median, head of data and analytics (Robert Half)£110,250 median (Robert Half)

04/ vetting

How we vet fractional CDOs

What we undertake on every brief, before a candidate reaches you.

01
Qualification screen
Verify CDO tenure, sector context and stage fit.
SOURCING
02
Mandate fit
Match to your situation — stage, board dynamics, timing.
MATCHING
03
Reference deep-dive
We take references ourselves, from recent past clients — real outcomes, not titles.
VERIFY
04
Shortlist
Three to five candidates with day rate, availability and IR35 position set out.
SHORTLIST OF 3–5

05/ what it costs

What a fractional CDO costs the day rate, and the full-time comparison

A fractional CDO is paid a day rate for the days worked, so the cost is the rate times the days. No source we can verify publishes a fractional CDO day rate today, so we print none: the rate depends on the size of the data estate, how regulated the data is, whether AI is in scope, and how many days the work needs. We set out each candidate’s day rate on the shortlist.

For a full-time chief data officer, Robert Half’s 2026 starting salary projections put base pay at £88,250 to £132,500 (25th to 75th percentile), median £110,250 (Robert Half). In London the band is £120,000 to £180,250, median £150,000 (Robert Half). A head of data and analytics, one level down, has a national median of £75,750 on the same page. A salary carries employer costs on top; a day rate does not, so compare like with like.

More on permanent pay: chief data officer salary. What a fractional engagement covers: fractional CDO services.

06/ fractional vs interim

Fractional CDO vs interim CDO part of the week, or all of it for a while

Fractional CDO vs interim CDO comes down to the days and the end date. A fractional CDO holds the seat part of the week, on an ongoing basis, while the business needs senior data judgement without a full-time week. An interim chief data officer works full-time for a fixed term: a data platform programme, a regulatory remediation, an integration after an acquisition, or cover after a CDO leaves.

A head of data is different again: a permanent manager who runs the data team day to day. Many companies start with a fractional CDO who sets the strategy and hires the head of data, then step down the days as that person settles in.

For the permanent seat and every other kind of role, see chief data officer jobs.

07/ when

When to hire a fractional CDO the usual triggers

Companies usually look at when to hire a fractional CDO once data decisions have outgrown a founder, a finance director or a head of analytics, but do not yet fill a chief data officer’s week. The common triggers:

Reports that disagree. Finance and sales each have a revenue number, and nobody owns the definition.

An AI or analytics programme. The board wants to use the company’s data with AI and needs someone to decide what may be used, and how.

A platform decision. A warehouse, lakehouse or new customer data platform, where a wrong choice costs years.

A due diligence or a regulator. A buyer, an investor or the ICO asks how the company governs its data, and nobody senior can answer.

If the work is daily and has an end date, an interim CDO fits better. When it fills the week, most companies move to a full-time CDO, sometimes the same person; we recruit that permanent hire too.

08/ hiring

How to hire one the short version

Write down what the CDO must deliver in the next twelve months, who they report to, what they can decide and how many days that takes. Ask candidates for a data strategy they wrote and saw through, and take references from the executives they reported to.

Settle the contract before the start. Where the CDO works through their own company, the off-payroll working rules (IR35) may apply; status depends on how the engagement runs in practice, and a medium or large client makes the determination (HMRC’s guidance for clients sets out the size tests). Our IR35 guide explains the tests.

To hire a fractional CDO through us, send the brief. We send a shortlist of 3–5, each with day rate or pay, availability and IR35 position set out, after our five-stage vetting.

09/ questions

Fractional chief data officer FAQ

The questions people ask before bringing in a fractional CDO.

A chief data officer who holds the role for part of the week, on an ongoing basis, often for more than one company. They own the data strategy, governance, quality and access, and answer to the CEO and board.

Maps the data the business holds, writes the data strategy, names an owner for each data domain, sets the rules on access, retention and quality, and decides what the data team builds. Pipelines and dashboards stay with engineers and analysts.

A fractional CDO works part of the week on an ongoing basis. An interim CDO works full-time for a fixed term, such as a data programme, a remediation or cover after a departure, then leaves. See interim chief data officer.

When data decisions have outgrown the founder or head of analytics but do not yet fill a full-time week: reports that disagree, an AI programme, a platform decision, or a buyer or regulator asking how data is governed.

Write the brief (outcomes, reporting line, decision rights and days), test candidates on a data strategy they delivered, take references from the executives they reported to, and settle IR35 before the start. Or send us the brief: we send a shortlist of 3–5.

The day rate times the days. We print no fractional CDO day rate because no source we can verify publishes one today; we set out each candidate’s rate on the shortlist. For comparison, a full-time CDO’s median base is £110,250 nationally and £150,000 in London (Robert Half, 2026).

Usually not. The ICO says a DPO must be independent and that other duties must not create a conflict of interest (ICO). A CDO decides how data is used, so the two roles normally sit with different people.

It depends on how the engagement runs in practice, not on the title. In most cases a medium or large client decides the status; for a small client outside the public sector, the worker’s own company decides (HMRC). We set out each candidate’s IR35 position and do not promise an outcome.

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A shortlist of 3–5 with day rate, availability and IR35 position set out, after five-stage vetting.

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