Fractional head of engineering salary · the permanent salary, pro-rata

What a fractional head of engineering earns, pro-rata of the permanent salary

No independent UK source publishes a fractional head of engineering day rate.

The figures here are the permanent head of engineering salary from Robert Half spread across working days — our arithmetic, a pro-rata floor for comparison, not a market rate.

Robert Half’s 2026 median for a permanent head of engineering is £93,000 nationally and £126,500 in London.

Over 220 working days the national median is about £420 a day, so one day a week for 46 weeks comes to £19,320 (our arithmetic).

A fractional head of engineering salary is what the days they sell add up to, at the rate they quote.

When you hire a fractional head of engineering through us, we send a shortlist of 3–5, each with day rate, availability and IR35 position set out.

Brief us on a fractional head of engineering →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

£93,000

Permanent head of engineering, median · range £85,500–£114,750, national

Robert Half, 2026

£420

Day equivalent of the median · £93,000 ÷ 220 working days

Our arithmetic

£19,320

One day a week, 46 weeks · £420 × 46, a pro-rata floor

Our arithmetic

3–5

Shortlist · with day rate, availability and IR35 set out

15 minutes · video or phone

Book 15 minutes to hire a fractional head of engineering

Tell us the scope and the days a week. We come back with Fractional Head of Engineering candidates, their day rates and availability.

0115 minutes, video or phone
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 Head of engineering jobs on the board

0 Fractional Head of engineering · 1 technology leadership

No Fractional Head of engineering roles on the board in the last three months. Showing technology leadership roles instead.

FractionalSyndicated
Fractional CISO (Contract / Project Based)
Cambridge Spark · United Kingdom
est £1,500/day2 d/wk

Browse every role on the board →

Technology leadership roles on the board

How fractional recruitment agencies compare is set out in one place, including how we work: a Fractional Head of Engineering brief and a shortlist of three to five.

01/ the role

How a fractional head of engineering is paid, and why this page shows a pro-rata floor

A fractional head of engineering leads the engineering team for part of the week: hiring and structure, delivery process, code quality and the technical roadmap under the CTO or founder.

To check seniority, the SFIA levels of responsibility give a common scale, and the BCS Chartered IT Professional register lists those assessed against its standard.

A fractional head of engineering invoices a day rate, or a monthly retainer for set days a week.

There is no salary, bonus, holiday pay or employer pension behind it.

We looked for an independent source for that day rate: a salary survey, a professional body, an official statistic.

None publishes one for this seat.

The figures offered online come from providers’ own price lists, US-dollar marketplaces or pages that quote each other, and we do not use them.

So this page starts from the figure that is sourced: the permanent salary.

Spread across 220 working days, it gives a day equivalent: what the salary pays for each working day, before the employer’s costs.

It is a floor for comparison.

It is not what a fractional head of engineering charges, and we make no claim about whether quotes come in above or below it.

02/ scope

How to hire a fractional head of engineering

1. Count the days the work needs

List what the seat must fix: hiring a team, a delivery process that slips, a platform migration, the handover to a permanent lead.

A team that needs daily line management may need more days than a team that needs a process set up and reviewed.

The work sets the days; the days set the bill.

2. Ask for the quote in writing

Ask each candidate for the day rate, the days a week, the notice period on both sides and whether the rate is before VAT.

Ask what happens to a day not used in a month.

Then set the quote beside the pro-rata figures below: they show what the same days would cost as a share of a permanent salary.

3. Settle IR35 before the start

If your business is medium or large, you make the IR35 status determination for the engagement and give the person your reasons (HMRC).

Settle it before you agree the rate, because it changes how the fees are taxed.

What we do on a fractional brief

We recruit fractional, interim, part-time, temporary and permanent technology leaders, and non-executive directors.

We send a shortlist of 3–5, each with day rate, availability and IR35 position set out, and every candidate goes through our five-stage vetting first.

Roles on the board are on fractional head of engineering jobs.

03/ the week

How a week divides.

Part of a week is the point of the model: the days you buy are yours, the rest of the week goes to other clients. Move the days a week and the week redraws.

Days a week for your company2 days

Your companyAnother clientA third client

Mon

Tue

Wed

Thu

Fri

Illustration only: one way a fractional head of engineering’s week can divide at 2 days a week for you. Each block is half a day.

04/ the board

What the board holds.

A read of the roles on the board on this page, counted as they stand: how each is engaged, whether the posting gives the days and the rate, and where the work happens.

On this board, last 90 days · 1 role · technology leadership

Engagement

Fractional1

Days a week

Stated in the posting1
Not stated0

Day rate

Verified rate0
Estimated (est)1
Rate not stated0

Work arrangement (as the job feed classifies it)

Remote1
Hybrid0
On-site0

Newest posting on the board: 27 Sept 2026.

05/ the route

Fractional, interim or permanent?

Four taps. The answer names the route for the seat and the page that covers it.

How much of the week does the work fill?

Is there a fixed end or a programme?

Does the seat sit on the board for years?

Is the need now, or can it wait for a search?

The route · Fractional

A fractional head of engineering.

The work fills part of the week, so buy the days it needs.

A fractional head of engineering holds the seat on agreed days for as long as the seat is needed, and works for other clients on the rest.

The fractional head of engineering route Talk it through

06/ rates by stage

Fractional head of engineering salary the permanent salary, pro-rata

Robert Half’s 2026 permanent base salaries for a head of engineering, national and London, and IT Jobs Watch’s median advertised salary from job ads. Each is divided by 220 working days and rounded to the nearest £10; the yearly columns multiply that day equivalent by 1, 2 and 3 days a week for 46 weeks. Every figure after the salary is our arithmetic: a pro-rata floor for comparison, not a market rate for fractional work. Robert Half is a recruiter.

Permanent salary pointBase salaryDay equivalent (÷ 220, our arithmetic)1 day a week × 46 (our arithmetic)2 days a week × 46 (our arithmetic)3 days a week × 46 (our arithmetic)Salary source

National, low end of range£85,500£390£17,940£35,880£53,820Robert Half, 2026

National, median£93,000£420£19,320£38,640£57,960Robert Half, 2026

National, high end of range£114,750£520£23,920£47,840£71,760Robert Half, 2026

London, low end of range£116,250£530£24,380£48,760£73,140Robert Half, 2026

London, median£126,500£580£26,680£53,360£80,040Robert Half, 2026

London, high end of range£156,000£710£32,660£65,320£97,980Robert Half, 2026

Job ads, median advertised salary£100,000£450£20,700£41,400£62,100IT Jobs Watch, 6 months to 5 Oct 2026

07/ economics

What a day rate leaves out, and what to check in a quote

Tax status is decided by how the engagement runs, not by the title or the contract wording alone.

Under the off-payroll working rules (IR35), a medium or large client makes the status determination; for a small private-sector client, the worker’s own company decides.

The rules apply contract by contract, and HMRC’s CEST tool gives its view on one engagement.

Employment status in employment law can differ from status for tax.

Our IR35 guide sets out the tests.

If the person’s company is registered for VAT, VAT is added to the day rate on the invoice.

Ask whether each quote is before or after VAT, so you compare like with like.

A day rate paid to someone’s own company carries no salary, holiday pay or employer pension.

A salary does.

Under automatic enrolment the employer pays at least 3% into a workplace pension on qualifying earnings, and employer’s National Insurance is 15% on earnings above £5,000 a year (HMRC rates and thresholds).

The pro-rata figures on this page are base salary only, before any of that.

There is a third route: employ the person part-time on a salary.

A part-time employee must not be treated less favourably than a comparable full-time one, and some benefits are applied pro rata (GOV.UK).

One day in five of the £93,000 median is £18,600 a year (our arithmetic), before the employer’s costs.

08/ vetting

How we vet fractional head of engineerings

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

01
Qualification screen
Verify Fractional Head of Engineering 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

09/ fractional head of engineering day rate

Fractional head of engineering day rate: what a quote should show

There is no published fractional head of engineering day rate we can cite, so the rate is whatever each candidate quotes.

On the permanent figures, the day equivalent runs from £390 to £520 nationally, and £580 on the London median (our arithmetic).

Use it to read a quote, not to set one.

A quote is comparable when it states the day rate, the days a week, the notice on both sides, whether VAT is added and whether expenses are billed on top.

Ask for all five in writing before you compare two candidates.

For your own position, try the rate calculator: put in the quoted rate and the days, and it gives the month and the year.

10/ the other routes

Permanent, interim or fractional: three ways to pay for the seat

A permanent salary buys an engineering lead every day; see head of engineering salary for the benchmarks this page divides.

An interim is paid by the day for full-time cover over a fixed period; see interim head of engineering salary.

A fractional head of engineering is paid only for the days bought.

If the gap is technical direction rather than the team, the seat is a CTO; see CTO salary.

11/ questions

Fractional head of engineering salary FAQ

The questions people ask before bringing in a fractional head of engineering.

Fractional head of engineering pay is a day rate or monthly retainer, not a salary, and no independent source publishes it for this seat. As a floor for comparison, Robert Half’s £93,000 median for a permanent head of engineering comes to about £420 a day over 220 working days, or £19,320 a year for one day a week over 46 weeks (our arithmetic).

Whatever the person quotes: we know of no independent survey or official source that publishes one. On Robert Half’s permanent figures, the day equivalent runs from £390 to £520 nationally, and £580 on the London median (salary ÷ 220 working days, our arithmetic). That is a pro-rata floor, not a market rate.

The day rate the person quotes, times the days a week, times the weeks. For comparison, the £93,000 permanent median comes to £19,320 a year at one day a week, £38,640 at two and £57,960 at three, over 46 weeks (our arithmetic). Add VAT if their company is registered. We send a shortlist of 3–5, each with day rate, availability and IR35 position set out, so you compare real quotes.

We take each salary point (Robert Half’s permanent base salaries, and IT Jobs Watch’s advertised median), divide it by 220 working days and round to the nearest £10. That day equivalent is multiplied by 1, 2 or 3 days a week for 46 weeks. Every step is our arithmetic, and it is base salary only: no employer’s National Insurance, pension or benefits.

Robert Half’s 2026 London median for a permanent head of engineering is £126,500. Over 220 working days that is about £580 a day, or £26,680 a year for one day a week over 46 weeks (our arithmetic). The London range runs from £116,250 to £156,000.

Because the sources differ. IT Jobs Watch puts the median advertised salary at £100,000, across 200 salaries in job ads over the six months to 5 October 2026. Over 220 working days that is about £450 a day (our arithmetic), against about £420 on Robert Half’s £93,000 national median.

It depends on how the engagement runs. A medium or large client makes the status determination; a small private-sector client leaves it to the person’s own company (HMRC). It is set contract by contract, so one person can have engagements on both sides.

Count the days the work needs, ask every candidate for the quote in writing, and settle IR35 before the start. Roles and the hiring steps are on fractional head of engineering jobs.

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Bring the brief. We architect the team.

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

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