Hire a Part-time CTO · Part-time CTO Jobs UK
Part-Time CTO Jobs · Hire a part-time CTO
Hire a part-time CTO for the days a week you need — Part-time Chief Technology Officer roles and senior technology leadership across the UK.
Strategic technology direction, team leadership, and technical architecture for growing businesses without full-time commitment.
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 part-time CTO
Tell us the scope and the days a week. We come back with Part-time 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
On the board · last 3 months
Fractional CTO jobs on the board
Current part-time CTO opportunities
Fractional recruiting starts with the brief, not the CV pile. Send a Part-time CTO brief and we come back with a shortlist of three to five candidates, each through five-stage vetting.
01/ the cross
Where a permanent hire becomes cheaper.
Move the day rate and the days a week: the rising line is a month of part-week cost, the flat line a permanent hire’s month. Where they cross, the seat should go full-time.
At 3.5 days a week a permanent hire costs less.
Our arithmetic. Permanent a month = the salary ÷ 12 plus 15% employer NI, plus the 30% search fee spread over 12 months — the calculator’s inputs. Hover, tap or use the arrow keys for each step.
Permanent = the £160,500 Robert Half 2026 median salary. The full calculator below adds the months, the totals and the currency tabs.
- The fractional CTO at 2 days a week never passes permanent inside 24 months.
- Interim passes permanent at month 4.
Our arithmetic, cumulative. Permanent = the salary’s 30% search fee in month 0, then salary ÷ 12 plus 15% employer NI each month. Interim = the midpoint of the published interim band (£1,300 a day, Exec Capital 2026) × 5 days × 4.33 weeks. Hover, tap or use the arrow keys for each month.
02/ the route
Fractional, interim or permanent?
Four taps. The answer names the route for the seat and the page that covers it.
The route · Fractional
A fractional CTO.The work fills part of the week, so buy the days it needs.
A fractional CTO holds the seat on agreed days for as long as the seat is needed, and works for other clients on the rest.
The route · Interim
An interim CTO.The work fills the week, and it has an end: a programme, a cover, a transaction.
An interim CTO takes the seat full time for that stretch and hands it over when it is done.
The route · Interim, then permanent
Interim now, a permanent CTO after.The seat is full time and long term, and the need is now.
An interim CTO holds it while the permanent search runs, so the seat is not left empty.
The route · Permanent
A permanent CTO.A full-time seat that sits at the table for years is a permanent hire.
There is time to run a search, so run one.
03/ the role
Part-time CTO Role Definition
Part-time Chief Technology Officers provide senior technology leadership without full-time commitment, working an agreed number of days a week.
Startups and growing companies hire a part-time CTO to handle strategic technology decisions, technical architecture, team leadership, and scaling the technology organization.
The role has become increasingly popular as technology complexity has outpaced internal capability at many scale-ups.
Companies need senior technology expertise for cloud migration, architecture decisions, team scaling, and technical due diligence but often can't justify a full-time CTO on a £160,500 median salary (Robert Half) — so they hire the expertise part-time instead.
Part-time vs Fractional CTO — key differences
Part-time CTO roles typically involve consistent days (e.g., Mon-Wed) with one company over a longer engagement, often with potential to transition full-time.
Fractional CTO jobs often work across multiple clients with more flexible, project-based arrangements.
Both provide senior technology leadership without full-time overhead.
If you need a CTO five days a week but for a fixed term — cover, a turnaround, a defined programme — that is an interim CTO.
How to hire a part-time CTO
To hire a part-time CTO, fix the days per week and the first technical mandate — architecture review, team scaling or a migration — then brief us against it: we come back with a shortlist of 3–5, each with day rate, availability and IR35 position set out.
04/ scope
Essential Skills for Part-time CTOs
Technical architecture and strategy
Part-time CTO jobs require expertise in designing scalable technical architectures, making technology stack decisions, and establishing development practices.
CTOs must balance technical innovation with business requirements and scalability constraints.
Government's digital profession framework sets out the skills it expects of a chief technology officer, a useful reference when scoping the seat.
Team leadership and scaling
Part-time CTOs focus on building and scaling engineering teams, establishing development processes, and creating technical culture.
This includes hiring technical talent, implementing agile methodologies, and managing offshore development relationships.
The government's Service Manual guide to agile delivery is a free, practical reference, and SFIA gives a shared language for the skills and levels in an engineering team.
Technology transformation and innovation
Part-time CTO opportunities involve leading digital transformation initiatives, cloud migration projects, and technology modernization.
CTOs must stay current with emerging technologies while ensuring practical implementation aligned with business objectives.
For a migration, the NCSC's cloud security guidance covers how to choose, configure and use cloud services securely, and customer data moved with it stays under the ICO's UK GDPR guidance.
05/ the maths
What the seat costs, by the days a week
Move the day rate, the days a week and the months: the totals and the permanent comparison for the period. The curve above shows where a permanent hire becomes the cheaper seat.
The slider runs across the published band for a fractional CTO: £1,000–£1,600 a day (Leadership Services 2026).
Cost over 12 months
£135,200
104 working days · 2 d/wk · 12 mo · before tax
Fractional costs less over 12 months£97,525
Fractional CTO, 12 months£135,200
Fractional CTO, a month at 2 d/wk£11,258
Permanent CTO, same period£232,725
Fractional CTO, 12 months$179,126
Fractional CTO, a month at 2 d/wk$14,916
Permanent CTO, same period$308,337
Converted from £ at $1.3249 per £1 (Bank of England spot rate), 2 Oct 2026. A conversion, not a US market rate. Source ↗
Fractional CTO, 12 months€158,806
Fractional CTO, a month at 2 d/wk€13,224
Permanent CTO, same period€273,359
Converted from £ at €1.1746 per £1 (Bank of England spot rate), 2 Oct 2026. A conversion, not a EU market rate. Source ↗
Our arithmetic, indicative. Permanent = the £160,500 Robert Half 2026 median salary pro rata for the same months, plus 15% employer NI, plus a 30% search fee on the annual base (UK retained search runs 25–35%, Headhunters.co.uk). Excludes pension, bonus and equity.
06/ the week
How a week divides.
The days you buy are yours; the rest of the week goes to other clients. Move the days a week in the calculator above and the week redraws.
Illustration only: one way a fractional CTO’s week can divide at 2 days a week for you. Each block is half a day.
07/ 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 · 2 roles · Fractional CTO
Engagement
- Fractional2
Days a week
- Stated in the posting1
- Not stated1
Day rate
- Verified rate0
- Estimated (est)2
- Rate not stated0
Work arrangement (as the job feed classifies it)
- Remote0
- Hybrid2
- On-site0
Newest posting on the board: 16 Oct 2026.
08/ rates by stage
Hire a Part-time CTO Rates & Compensation
Monthly cost by stage as Red Eagle Tech publishes it. The day rate is one published band across stages — £1,000–£1,600; no source splits it by stage.
09/ vetting
How we vet part-time CTOs
What we undertake on every brief, before a candidate reaches you.
- 01
Qualification screen
Verify Part-time CTO 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
10/ services
Part-time CTO services — what the engagement covers
Part-time CTO services usually cover four areas: technology strategy and the architecture that follows from it; the engineering team — hiring, structure and how work is delivered; security and resilience; and the technical side of fundraising and due diligence.
Agree which you are buying, because a part-time CTO on limited days cannot lead all four at once.
Security is the one boards most often leave unowned.
The NCSC's Cyber Security Toolkit for Boards helps boards embed cyber resilience across people, systems and processes, and Cyber Essentials is the minimum standard of cyber security the government recommends for organisations of all sizes — and a growing number of organisations require suppliers to be certified to bid for work.
A part-time CTO should be able to tell you where you stand against both.
Part-time CTO services are also sold by agencies and consultancies as a team rather than a person.
That can work for a defined project; for an ongoing seat, insist on one named CTO who attends leadership meetings.
For the multi-client model, see fractional CTO jobs; for costs, fractional CTO cost.
11/ startups
Part-time CTO for startups — before the first engineering hire
A part-time CTO for startups is often the first senior technical person in the company.
The early job is the decisions that are expensive to reverse: the stack, build or buy, who to hire first and what to leave out of the first version.
The table above shows what Red Eagle Tech publishes by stage.
Two things founders often miss.
First, R&D: HMRC's R&D tax relief supports companies whose projects seek an advance in science or technology, and the CTO is usually the person who can explain what the technical uncertainty was — far easier to record as the work happens than afterwards.
Second, investors' technical due diligence: a part-time CTO who has been through it can prepare the architecture notes, security position and roadmap before it starts.
If the startup needs a co-founder with equity rather than a contractor, say so in the brief — that is a different search.
Otherwise, brief us with the stage and the days a week and we come back with a shortlist of 3–5, each with day rate, availability and IR35 position set out.
Founders often hire the finance seat alongside: see part-time CFO jobs.
12/ questions
Part-time CTO FAQ
The questions people ask before bringing in a part-time CTO.
Book 15 minutes · shortlist of 3–5
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.
