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A fractional CTO owns the technical calls, without a permanent hire

Some companies are not ready for a full-time CTO and cannot wait for one. They need someone senior to read the codebase, make the rebuild-or-refactor call, put a budget on the roadmap and hire the team that builds it, then leave a way of working that runs without them. That is the role we staff.


Profiles in three daysYou interview and chooseWithin 1 hour of CET

When to hire a fractional CTO, and what they take on first.

Six situations where a company needs senior technical ownership before it can justify a permanent CTO. Each comes with the work that starts first.

  1. A build with no technical founder

    The idea and the budget exist, but nobody on the team can judge an estimate or choose a stack.

    The work

    • An estimate built from the specification
    • A stack chosen, reasons written down
    • The team structure the build needs
  2. A product someone else built

    It mostly works, and nobody left on the team can say whether it survives another year of features.

    The work

    • Code, cloud and bill audited
    • A rebuild-or-refactor call, in writing
    • A plan that keeps current users working
  3. A team growing without a lead

    Engineers are hired faster than decisions are made, and each squad solves the same problem its own way.

    The work

    • Named owners for apps and backend
    • A hiring plan and technical interviews
    • Review and release rules for every team
  4. A roadmap that needs technical judgement

    Priorities are set, but nobody weighs them against architecture, cost and what the team can build.

    The work

    • Roadmap items priced in effort and risk
    • Architecture work planned ahead of features
    • A budget tied to the roadmap
  5. Investors will ask technical questions

    Due diligence is coming, and the answers on architecture, security and the team have to hold up.

    The work

    • Architecture and security written down
    • Known risks listed, each with a plan
    • Answers ready for technical due diligence
  6. A customer asks about security

    A large customer sends a security questionnaire, and nobody on the team owns the answers.

    The work

    • A gap analysis against what they ask
    • Fixes ranked by risk, each owned
    • Answers the team can stand behind

From the first audit to a team that decides without you.

Five stages between a company with open technical questions and a team that makes good calls on its own. A fractional CTO is hired because nobody owns these calls yet, and each stage leaves a written record the next lead inherits.

  1. 01

    Assess

    Read access to the code, the cloud account, the bill and the tracker, and a conversation with each person on the team. Findings are ranked by what would hurt the business most.

    Audit notes, ranked risk list
  2. 02

    Decide

    Rebuild or refactor, build or buy, which vendor stays. Each call is written down with the options that lost and the cost of leaving it alone, and your founders sign it.

    Decision records
  3. 03

    Plan

    The roadmap priced in people, time and cloud spend, in the order the risks allow, so architecture work is scheduled before the features that depend on it.

    Costed roadmap, budget
  4. 04

    Hire

    The roles the plan needs, the order to fill them and how each is interviewed. The CTO runs the technical interviews and sets what each outside vendor answers for.

    Hiring plan, interview guide
  5. 05

    Review

    Review, release and reporting habits the team keeps, a few numbers checked every month, and notes a permanent lead could pick up without a briefing.

    Review rules, handover notes

What the role answers for beyond the plan.

The five stages above are the order of work. These are the areas a fractional CTO answers for throughout, mostly in tools your team already runs.

Security and compliance

Keeps security questionnaire answers true as the product changes, and decides when an outside audit is worth paying for. The certificate or report itself comes from an independent auditor.

  • ISO 27001
  • SOC 2

Cloud cost

Sets the infrastructure budget against the roadmap and decides which savings are worth engineering time. The monthly read of the bill stays with a DevOps engineer.

  • AWS
  • Google Cloud
  • Azure

Vendor contracts

What each outside team is paid to deliver, what it must hand over at the end, and how to leave a vendor without losing the code.

Coding-agent policy

Which repositories coding agents may change, which agent tools the company pays for, and which data never goes to a model.

  • Claude Code
  • GitHub Copilot

Data and privacy

Where personal data lives, who can reach it and how long it is kept, decided before an auditor or a customer asks.

  • GDPR

Delivery and release

How work moves from ticket to release, and the few numbers that show each month whether delivery is getting faster or slower.

  • Jira
  • Linear
  • GitHub

Advisor or interim CTO, and what each owns

We staff this role at two depths. An advisor makes the calls alongside your team; an interim CTO also runs the team until a permanent lead is in place.

Senior · Advisor
Owns the audit, the decision records and the costed roadmap, and meets your founders on a fixed rhythm. Your existing lead or vendor runs the engineers day to day, and the advisor reviews their plans and architecture changes before they are built.
Lead · Interim CTO
Everything the advisor owns, plus the team: hiring, technical interviews, reviews, the release process and the vendors. Stays until a permanent CTO is hired, helps interview them, and hands over the decision records, the roadmap and the habits the team runs on.

AI-assisted technical leadership, with every call kept by a person.

Coding agents can read a whole codebase and draft the options for a decision. They cannot answer for the choice. A fractional CTO uses them for the reading and the drafting, and keeps the calls where a mistake costs a year of rework or the wrong hire: architecture, budget, vendors and who joins the team.

ADR-04 · Rebuild or refactor v1Drafted with an agent

Example · decision record

  • Added Rebuild the iOS app nativelynew codebase
  • Changed API versioned for the new appcurrent app kept
  • Removed Third-party booking SDKreplaced
  • Added Rebuild budget and go-aheadHuman decision

Options weighed: refactor in place, rebuild

Fractional CTOChecked cost, risk and what the team can runRecommended
Send to the founders

An audit that reads the whole repository

Agents map the codebase, its dependencies and the cloud configuration, so the CTO spends the audit on the risky parts instead of reading every file.

Options drafted, decisions signed by people

An agent drafts the decision record from the audit notes. The CTO checks it against the budget, the team and the roadmap, and your founders sign off on the call.

Generated code keeps a named reviewer

However much of the code agents write, each change is read by an engineer who answers for it. The CTO sets that rule and checks it still holds, sprint by sprint.

From your requirements to matching developers in 3 working days.

You do not need to enter a long recruitment process before you know whether we have the right people.

Fractional CTO

12 years · ImproveIT engineer

  • Architecture audit
  • Roadmap and budget
  • Hiring
  • Vendor management
  • Cloud cost
Decisions owned
Rebuild, hiring, vendors
English
C1
Overlap with CET
Full working day
Rate
In the proposal

Recent projectArchitecture advice for a hotel booking platform

Example · profile 1 of 2Book your interview
01

Tell us what you need

Send the role, stack, seniority, required experience, working-hour overlap, team size, and expected start date.

02

Get matching profiles

Within three working days, we send relevant profiles with CVs, project experience, English level, availability, and rates.

03

Interview the developers yourself

Use your own technical interview and selection process. Meet the people who would actually join the team and reject anyone you are not confident about.

04

Start working together

Once you choose, we handle the contract and onboarding. Your developers join your repositories, standups, tooling, and delivery process.

Choose the engagement model that fits the gap.

You can hire software developers through an outsourcing model that matches how much ownership, capacity, and flexibility your team needs. Most clients start with one engineer and grow. Roles and stacks are further down the page.


01

Ad-hoc staff augmentation

One engineer or several, embedded in your team and managed by you. The most common way clients start with us.

Best for a named capability or capacity gap you already understand.

Speed
Profiles in 3 days
Pricing
Per hour
Managed by
You
02

Dedicated team

A complete team for a product, a module or a roadmap stream — engineering, QA, DevOps and design as the work needs it.

Best for stable delivery capacity without hiring every role in-house.

Speed
2–4 weeks to assemble
Pricing
Monthly per person
Managed by
You, or jointly with our lead
03

Recruitment

We recruit for a skill set we do not have on the bench, against your requirements, and the person joins on your contract.

Best for a niche stack, a rare seniority level, or a role you keep failing to fill locally.

Speed
2–4 weeks
Pricing
Per hire
Managed by
You
04

Build, operate, transfer

We hire and run the team in Poland or Ukraine, then hand it over to you as your own staff for direct contracts when you are ready.

Best for opening a development centre in Europe without setting one up yourself first.

Speed
3-4 weeks to build
Pricing
Monthly per person, plus a transfer fee
Managed by
Us, then you

The reason to outstaff is speed. The reason to stay is quality.

Netguru, a 500-person Polish consultancy whose own clients include UBS, has staffed projects with our engineers for more than 8 years. They could hire anyone.

Staff augmentationNetguru, 2018-ongoing

Read the Netguru case study
8+years

Netguru has staffed projects with our engineers

500+people

at Netguru, whose own clients include UBS

Where our people advised on the technical calls.

None of these was sold as a fractional CTO. In each, advice on architecture, the roadmap or the team was part of what our engineers delivered.

Complete software buildHotel-Spider

Product and architecture consultancy beside a dedicated senior team

5 engineersTeam
2019 - ongoingPeriod

Hotel-Spider needed to scale its development team and wanted deep technical advice on its strategic product roadmap. Alongside a dedicated senior team, we gave consultancy on product strategy and solution architecture, in close cooperation with the business.

Read the Hotel-Spider case study
3days

From your requirements to matching profiles with CVs

90%

Of our developers have 5 to 20 years of experience

6years

Our longest continuous engagement, still running

10+

Time zones, with working hours flexed to match your team

What it is like to have our engineers on your team.

“I have worked with ImproveIT for more than 3 years, as a mobile product manager for Photoweb and now as a director of Piiics. In both, the technical challenge is quite high. The dev team has been highly motivated and professional.”

Clement PoursacPhotoweb Group · France

“We work with ImproveIT Solutions for years. Thanks to their support with new talents/developers we were able to proceed with many new projects. For sure we value their employees, we are happy to have them with us and we always do our best to keep them as long as we can in our projects.”

Barbara KucharczykNetguru · Poland

“Their attention to detail is great, and they question us if they think it might be better to solve the issue in a different way. They really care about the product they're building.”

Michael KolomenkinEyeToAi · Israel

“Their ability to advise and provide professional guidance made them a go-to partner. The engineering team demonstrated outstanding dedication and technical skills.”

Yannick BlondeauHotel-Spider · Switzerland

“They understand the needs and manage the project seamlessly. They stand out for their professionalism, skills, and the quality of the candidates they provide.”

Andrew NolanAnitech Solutions · Ireland

“Great app that works with functionality exactly like we want it. Internal stakeholders are particularly impressed with the quality of deliverables. They take ownership beyond their contractual obligations.”

Alok AlstromBeyond Liberum AB · Sweden

“Within one year we reached a 99% crash-free user ratio on both operating systems, which was one of our goals. Within two years we reworked all our apps and improved our conversion rate by 50%.”

Axel BouthorsPiiics · France

“All tasks are done on their side, they've always delivered on time, and their code quality is good. The developer assigned to us is always available.”

Luka SikicOnpreo GmbH · Germany

“We were very impressed with the wide range of experts. We've been able to significantly speed up the development of a number of our projects on a very reasonable budget.”

Martin Enderleintencio s.r.o · Czech Republic

“Exceptional service delivery: in-time, on-budget, with high quality and professional advice.”

Marcus ZedlerCamyylyon · Switzerland

“With a limited budget, we have been able to master 3 new tools: Rich Snippet, Rating-Widget, Survey. A good outcome that helped me and my lead frontend developer.”

Carsten SchaeferTrust · Germany

“Developers are experienced. They can discover the main potential issues and are able to solve them beforehand.”

Romain CoiraultLalalab · France

“A highly adaptive team that offers helpful insights and delivers work at reasonable rates.”

Didier GromaireCedemo · Monaco

Questions about hiring a fractional CTO.

How is a fractional CTO different from a technical consultant?

A consultant hands over a report and leaves the decision with you. A fractional CTO makes the decision with you, writes it down with the options that lost, and is still there while the team builds it. The advice has to survive the roadmap, the budget and the people who carry it out, and the CTO answers for it when it does not.

How much of the week does a fractional CTO spend with us?

It is agreed before the start, written into the proposal, and changes with the stage. The audit and the first decisions take more of the time than a running review and reporting rhythm does, so the proposal also says when the hours step down and what the CTO still owns after that. Reporting to your founders follows the same agreed cadence.

What does the CTO leave in writing?

Audit notes, a ranked list of risks, decision records for the calls made, a costed roadmap, a hiring plan, and the review and release rules the team now follows. All of it lives in your repository and your documents from the day it is written, not in ours, so a permanent lead inherits documents rather than a briefing.

Can a fractional CTO manage our developers or an outside vendor?

Yes, as an interim CTO rather than an advisor. The CTO then runs hiring, reviews and the release process, and holds each vendor to what its contract says it delivers, including what it must hand over at the end. Your founders keep the final say on budget and on which vendors stay.

When is a fractional CTO the wrong hire?

When the decisions are already made and what is missing is people to build. Hire senior engineers or a team instead. It is also the wrong hire once the company needs a CTO every day: part-time cannot hold that, and by then the fractional CTO's job is to help you hire a permanent one and hand over.

Will the CTO steer us towards hiring ImproveIT engineers?

No. The hiring plan names roles, not suppliers, and says which of them should be permanent hires on your own payroll. If you want our engineers for some of those roles, that is a separate proposal, and you interview them like any other candidate before anyone is contracted.

What happens when we disagree with a recommendation?

You decide, and the record shows it. The CTO writes the recommendation with the options that lost and what each would cost, and your founders choose. If you pick another option, the decision record says so and why, and the CTO plans around it rather than reopening it every month.

Is a fractional CTO cheaper than a full-time one?

Usually, because you pay for the time agreed rather than a full salary, equity and a long search. The rate depends on the depth, advisor or interim CTO, the time each week and how long the engagement runs, and you receive it in writing before committing. The comparison stops holding once the company needs a CTO every day.

Can we start with one senior developer?

Yes. Many clients start with one senior engineer to cover a specific capability or capacity gap, then add specialists only when the roadmap requires them.

Can we scale the team up or down?

Yes. Adding an engineer follows the same route as the first, and you interview them. Reducing the team follows the notice period agreed in the contract, and the work is handed over in your repository before anyone leaves.

Will the developer work as part of our team?

Yes. You manage priorities and day-to-day work directly, in your own channels and delivery process.

Do we interview the developer before they start?

Yes. You interview every candidate using your own process and make the final decision about who joins the team.

Are the developers your employees or freelancers?

Our engineers are ImproveIT employees and long-term contractors working through our teams in Poland and Ukraine. We are not a freelance marketplace and do not resell developers from other vendors.

What if the developer is not the right fit?

Replacement terms are defined in the contract upfront, so it does not become a negotiation.

Who owns the code and intellectual property?

You do. IP assignment is included in the contract, and we can sign an NDA before discussing the project.

How do you handle security, access and NDAs?

We sign an NDA before discussing the project, and confidentiality and IP assignment are part of the contract. Engineers work in your repositories, cloud accounts and tools with the access your team grants, so you can narrow or revoke it at any time.

Can your developers work with our timezone?

Yes. Our engineers work with teams across Europe and the US. We agree the required working-hour overlap before matching candidates.

How is their English?

Our developers work in English with international product and engineering teams every day. English level is included in the candidate information you receive before the interview.

What does it cost to hire a developer?

Rates depend on the role, seniority, experience, and engagement model. You receive the rate, availability, and candidate profile in writing before making any commitment.

What are the minimum engagement and notice period?

Both are agreed before the engagement starts and included in the proposal and contract. We are flexible in that and usually agree on the terms suitable for a client.

Past the first decisions?

Three places a first finding can lead: a team to build the plan, an AI-built product to clean up, or a cloud bill to bring under control.

Tell us which engineers you need.

Stack, seniority, how many and when. We come back with matching profiles, availability and rates within three working days.

You interview them with your own process, and you reject anyone you are not sure about.

  • 1Send the requirements
  • 2Get profiles with CVs, availability and rates in 3 days
  • 3Interview, choose, and start within a week

We sign an NDA before discussing anything in detail. We reply within 24 hours.

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