Hire a Fractional CTO · Fractional CTO Jobs UK
Fractional CTO Jobs · Hire fractional CTO, or hire CTO · CTO for hire
Hire a fractional CTO — senior technical leadership, 1–3 days a week — for startups scaling, enterprises transforming, and teams needing strategic tech direction. UK-wide, from a single brief to a shortlist of 3–5.
- £1,000–£1,600 a day
- 1–3 days a week
- 3–5 candidates per shortlist
- Five-stage vetting on every brief
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
15 minutes · video or phone
Book 15 minutes to hire a fractional CTO
Tell us the scope and the days a week. We come back with fractional CTO 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
Pick a day that suits · live availability
Fractional CTO jobs · last 3 months
Live Fractional CTO jobs
No live Fractional CTO roles in the last three months. Showing live fractional product and technology leadership roles instead.
- FractionalSyndicated
Fractional CISO (Contract / Project Based)
Cambridge Spark · United Kingdom
est £1,500/day2 d/wk - FractionalSyndicated
Fractional Product Practice Leader - 9 Month Contract
Tails.com · London
est £1,000/day2 d/wk - FractionalSyndicated
Fractional CPO
Log my Care · City of London
est £3,250/day3 d/wk
01/ the model
What are fractional CTO jobs?
Fractional CTO jobs are part-time chief technology roles where you own the tech strategy within a defined scope — not a consultant, not an advisor. Four ideas define the model.
01 · cadence
A chief technology officer, 1–3 days a week.
Senior, proven CTO capability across a defined slice of the week. You get the technical leadership you need without a full-time salary or a five-day commitment.
02 · role
Owns the tech strategy — not just advising.
Unlike a consultant or advisor, a fractional CTO is the technology leader: owns architecture, leads the engineering team, and makes the technical decisions.
03 · structure
Engaged on a written scope.
Usually engaged through their own company rather than employed, on a scope that names the outcome, the days and the notice. IR35 status depends on how the engagement runs in practice, and a medium or large client makes the determination.
04 · horizon
A mandate, not a tenure.
Scoped to an outcome — a platform rebuild, a scale transformation, a tech debt reduction — often ending in a clean handover to a permanent CTO.
02/ scope
What a fractional CTO delivers.
Accountable for technology strategy and architecture — and answerable to the CEO and board, exactly like a permanent chief technology officer.
01 / ARCHITECTURE
Technical strategy & system design
Owns the architecture roadmap, technology choices and platform evolution — accountable for scalability, security and technical debt management.
02 / ENGINEERING TEAM
Team structure & delivery
Scales the engineering organisation, defines team topology, owns hiring standards and delivery processes. Builds a team that ships.
03 / PRODUCT PARTNERSHIP
Product-engineering alignment
Partners with product leadership to balance technical excellence with shipping velocity. Translates business needs into technical reality.
04 / TECHNICAL CREDIBILITY
Board, investor & customer trust
The technical voice in the boardroom, during due diligence, and with enterprise customers.
03/ alternative models
Fractional CTO vs alternatives.
How the fractional model compares with a consultant, an interim, a VP Engineering and a full-time appointment.
→ Fractional = embedded owner. Consultant = a decision, delivered as a document.
→ Fractional = strategic + part-time. Interim = tactical + full-time.
→ CTO = strategy + external. VP Eng = delivery + internal.
→ Fractional gives proven CTO firepower for a defined mission — at a fraction of the commitment.
04/ vocabulary
CTO as a service, CTO consultant, contract CTO — what buyers actually search.
Most companies that need this do not use the word “fractional”. They search CTO as a service, CTO consultant, CTO consultancy, contract CTO, a CTO for hire or simply chief technology officer jobs — and they mean roughly the same thing: senior technical leadership without a permanent hire.
A DECISION
CTO consultant
Usually engaged for an assessment — a technical due diligence, an architecture review, a build-versus-buy decision — and delivers a document. Also sold as CTO advisory services or a CTO consultancy.
A FIXED TERM
Contract CTO
Typically full-time for a fixed term, covering a gap or running a defined programme. A CTO contractor bills a day rate through their own company. See interim CTO jobs.
A PRODUCT
CTO as a service
A productised version of the same thing, usually sold by an agency with a team behind one named lead. See fractional CTO services.
AN OWNER
Fractional CTO
One named person, in your business one to three days a week, ongoing, accountable for the roadmap rather than a deliverable.
Which you want depends on whether you need a decision or an owner. A decision — should we rebuild, is this team the right shape, is the codebase an asset or a liability — is consultancy work and should be scoped and priced as such. An owner is a seat, and fractional is the cheapest way to fill it at this seniority. This is our reading of how the terms are used in the UK market, not a published definition.
05/ rates
Fractional CTO day rates, UK 2026.
Published figures only, each with its source. London and regulated-sector mandates sit at the top of the band; regional engagements typically run £200–£400 a day cheaper.
- Fractional CTO£1,000–£1,600Leadership Services 2026
- Fractional CTO£900–£1,600Connectd 2026
- Mid-market£1,000–£1,200Connectd 2026
Two days a week across a 46-week year at the published band is £92,000–£147,200 in day fees — our arithmetic.
06/ economics
Part-time CTO cost.
Model the cost against a full-time CTO, or what one fractional mandate earns.
£1,100 a day is within the published band for a UK fractional CTO (£1,000–£1,600, Leadership Services 2026).
Year-one cost
£101,200
2 d/wk · 46 weeks · day fees, before tax
Fractional costs less in year one£53,800
Book a 15-minute call →Our arithmetic, indicative. Full-time CTO = £155,000, the low end of the £155,000–£240,000 fully loaded range (base, 15% employer NI, pension, recruitment), so any saving shown is the conservative one.
07/ the contract
Find a fractional CTO: how the engagement is contracted.
A fractional CTO engagement is written around a scope — the outcome, the days a week and the notice. IR35 status depends on how the engagement runs in practice, and a medium or large client makes the determination. Reference: HMRC off-payroll working (IR35) guidance and the CEST tool. See the IR35 guide.
01 / CONTROL
Control of the “how”
HMRC looks at who decides how, when and where the work is done — whether the company sets the outcome or directs the method.
✓ In the contract02 / SUBSTITUTION
Right of substitution
HMRC looks at whether the CTO could send a suitably qualified substitute, and whether that right is genuine in practice.
✓ In the contract03 / MUTUALITY
Mutuality of obligation
HMRC looks at whether the company must offer work beyond the agreed scope, and whether the CTO must accept it.
✓ In the contract08/ timing
When to hire a fractional CTO.
Four situations where a fractional chief technology officer is often the right answer — a team that needs CTO-level strategy, architecture oversight and leadership before it can justify a £120,000–£180,000 full-time base.
Which sounds like you?
The technical founder wants to focus on product vision or step into the CEO role. A fractional CTO handles architecture, team scaling and engineering processes while the founder transitions.
- → Bridge technical leadership while the founder evolves the role
Legacy tech debt blocking growth. You need senior technical leadership to architect and execute a migration while keeping the lights on. Too critical for consultants, not permanent enough for full-time.
- → CTO expertise for transformation without long-term cost
The engineering team is outgrowing founder or VP leadership. You need CTO-level thinking for architecture, org design and technical strategy but are not ready for a £155K–£240K fully loaded package.
- → Strategic tech leadership at the right stage cost
Fundraising or an acquisition on the horizon. You need a credible CTO for technical due diligence, architecture documentation and engineering maturity.
- → Board-ready technical leadership for critical moments
09/ the buyer’s guide
How to hire a fractional CTO.
The buyer’s guide, compressed: scope, source, assess, then a structured trial.
PLAYBOOK 01
How to hire a fractional CTO for a startup
At pre-seed and seed, one day a week is the usual starting point; a one-to-two-day retainer runs £3,000–£7,000 a month. Scope the engagement to a specific outcome — a technical assessment, an architecture decision — rather than an open-ended strategic retainer. It is easier to judge and cheaper to stop.
→ Start with a scoped project; convert to a retainer once it works
PLAYBOOK 02
How to hire a fractional CTO team
Sometimes one part-time person cannot carry it. The common shape: a fractional CTO at 1–2 days a week owning architecture, standards and the board relationship; a delivery or engineering manager at 3–5 days running the day-to-day; and flexible contract build capacity underneath both. Insist on one accountable technical owner in writing — and an exit plan that documents the team out of a job.
→ One accountable owner · an exit that isn’t a cliff
PLAYBOOK 03
The four-step process
Define your technical scope and budget. Source through investor and advisor referrals, specialist platforms and technical networks, or submit a brief to us. Assess with a portfolio deep-dive and technical scenarios against your stack. Then start with a structured 1–3 month trial with clear deliverables.
→ Start with a scoped project, not a retainer
10/ recruitment
CTO recruitment — how the search should run.
CTO recruitment usually goes wrong at the brief, not the shortlist. Boards ask for a chief technology officer when the work in front of them is closer to a head of engineering, or brief a hands-on builder when what they need is someone to own architecture, security and the board conversation. Before anyone is approached, write down what the CTO will own — roadmap, platform, engineering team, vendors, cyber risk — and what should be different by the end of the first mandate.
Then choose the engagement model, because it changes who you can hire and what you must do. A permanent appointment follows the ordinary employment steps — job description, structured interviews, references, an offer — and Acas sets out each of them, along with the discrimination rules that apply; every employee also needs a right-to-work check. A fractional or interim CTO is usually engaged through their own company, so the IR35 question belongs on the brief: status depends on how the engagement runs in practice, a medium or large client makes the determination, and HMRC’s guidance for clients sets out who is in scope.
Assess leadership as well as technical depth. Two independent reference points help: the SFIA framework, which describes digital skills against levels of responsibility, and BCS Chartered IT Professional (CITP) registration, which benchmarks technical and professional competence against an independent standard. Neither replaces references from people who worked for the candidate. If you are comparing a CTO recruitment agency, a CTO recruiter working on contingency and a retained CTO search, ask each how they will assess leadership as well as technical depth, and who takes the references. Our part in CTO recruitment is stated plainly: a shortlist of 3–5, each candidate taken through the stages on our vetting page with day rate, availability and IR35 position set out.
11/ the broad hire
Hire a CTO — fractional, interim or permanent.
Most people who set out to hire a CTO have not yet decided which kind they need. Four shapes cover almost every case. A permanent CTO is an employee, full-time, owning technology for the long run. An interim CTO is full-time for a fixed term — cover, a turnaround, a defined programme. A fractional CTO owns the roadmap one to three days a week, ongoing, often across more than one client. A part-time CTO holds the same seat on a consistent weekly pattern with one company.
The deciding question is how much CTO-level work exists each week. If architecture, engineering leadership, security and the board conversation fill a week, hire permanently — hiring a full-time CTO? See our CTO headhunter page. If they fill a day or two, a fractional hire fills the seat without a full-time salary — fractional CTO cost sets out the published figures. Two further points change the answer. Equity: HMRC’s Enterprise Management Incentives carry a working-time requirement that a one-to-three-day engagement will not usually meet, so share options for a fractional CTO need a different structure and proper advice. Risk: whoever you appoint will own your security posture, and the NCSC’s Cyber Security Toolkit for Boards sets out the questions your board should be able to put to them.
However you hire a CTO, the brief is the same: scope, stage, stack, days a week, budget and IR35 position. Send it to us and we come back with a shortlist of 3–5, and you interview. For a contracted CTO, status turns on how the engagement actually runs, not on the contract label — check it with HMRC’s CEST tool and our IR35 guide.
12/ where
Fractional CTO UK — London, the regions and remote.
A fractional CTO UK search is not limited by postcode. We shortlist fractional CTOs across the UK for hybrid or remote engagements. Whether it is a fractional CTO London brief with regular office days or a fractional CTO Kent brief that needs only occasional visits, tell us how many days on site the role needs and we shortlist on that: 3–5 candidates, each with day rate, availability and IR35 position set out. The rates section above sets out how location moves the day rate.
A freelance CTO and a fractional CTO overlap: both usually work through their own company, but a freelance CTO is often engaged for a project, while a fractional CTO holds the seat on an ongoing basis. If the seat is the same days every week with one company, it is a part-time CTO — part-time CTO jobs covers that route, including part time CTO services bought by the day.
Virtual CTO consulting UK and CTO as a service
Virtual CTO consulting UK providers usually sell advice delivered remotely — an assessment, an architecture review, a roadmap — rather than an owner of the technology. CTO as a service UK offers are the productised version, often an agency with a team behind one named lead; a CTO as a service London firm works the same way with more time on site. Both are compared in fractional CTO services. Ask who specifically will do the work before you sign.
13/ vetting
How we vet fractional CTOs.
What we undertake on every brief, before a candidate reaches your shortlist.
- 01
Pedigree screen
Verify prior CTO or VP Engineering tenure, tech stack and scale. No consultants presenting as fractional.
SOURCING - 02
Technical fit
Match to your stack, architecture needs and engineering culture — not just buzzwords.
MATCHING - 03
Reference deep-dive
We take references ourselves, from recent clients and engineering teams: real delivery, not just strategy.
VERIFY - 04
Shortlist
3–5 candidates, each with day rate, availability and IR35 position set out.
SHORTLIST OF 3–5
14/ questions
Fractional CTO FAQ.
Common questions from companies on the buy side and CTOs looking for fractional work.
The practical difference is continuity and accountability: with a service you get a capability, with a fractional CTO you get a person who sits in your leadership meeting and whose judgement you can hold to.
Rates overlap heavily. Ask who specifically will do the work and how many other clients they carry.
A CTO consultant delivers an assessment — technical due diligence, architecture review, build-versus-buy — and hands you a document. Scope it as a project.
A contract CTO is typically full-time for a fixed term, covering a gap or running a defined programme.
A fractional CTO owns the roadmap on an ongoing part-time basis. If the technology direction needs someone accountable next quarter and the quarter after, that is the one you want.
London and regulated-sector mandates sit at the top; regional engagements typically run £200–£400 a day cheaper.
For comparison, a full-time UK CTO is £120,000–£180,000 base and £155,000–£240,000 all-in once employer National Insurance at 15%, pension and recruitment are counted.
If you want permanent chief technology officer jobs, the live board above carries fractional and interim roles rather than permanent ones — but most fractional CTOs arrive from permanent CTO careers.
Browse all fractional jobs for the wider board.
If you are running CTO recruitment for a permanent employee yourself, Acas’s recruitment guidance covers the job description, interviews, offer and references.
If the need is full-time but temporary, look at an interim CTO.
Equity works differently: HMRC’s EMI scheme has a working-time requirement that a fractional engagement will not usually meet, so take advice before offering share options.
Book 15 minutes · shortlist of 3–5
Bring the brief.
We architect the team.
A shortlist of 3–5. Five-stage vetting.
For hiring companies
Book a call or submit your fractional CTO brief; we come back with a shortlist of 3–5 candidates.
For fractional CTOs
Browse live fractional CTO roles from our jobs feed, or get in touch about the searches we run.
