Mateo
Full Stack Developer
ReactNode.jsPythonTypeScriptNext.jsMongoDBAWSAIAPIs
Shakers for companies
Work with a senior Fractional CTO
A certified Fractional CTO to decide the technology that comes next: strategy, architecture and development teams for startups and SMBs with no tech executive on staff. The market also knows the role as external CTO, CTO as a Service or CTO fraccional.
Senior tech talent starting within days and a budget closed by scope. One specific person who answers for the technical decisions of your business.
- Certified talent in AI and agent skills
- Meet up to 3 AI Builders in 72 h
- Flexible collaboration models
+600
European clients across different industries
Top 4%
We work with the top 4% of certified talent in our community
72 hours
Meet 3 certified candidates in under 72 h
4.7/5
Our clients' satisfaction on Trustpilot
The talent mix your company needs
At Shakers you will find AI Engineers and specialists across Tech, Product and Data
Ana
DevOps Engineer
DockerCI/CDAWSAzureKubernetesTerraformAmazon Bedrock
Lucas
Backend Developer
Node.jsPythonJavaGoPHPMySQLMongoDBDocker
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Emma
Security Engineer
Burp SuiteOWASP ZAPMetasploitNmapNessusTrivySnyk
What this profile brings to your project
A Fractional CTO is the technology executive a company brings in part time and without adding them to payroll: they set the technical strategy, define the architecture, choose vendors and steer the development team. The Spanish market calls the role fractional CTO, CTO as a Service, CTO externo or 'director tecnológico freelance', the real Spanish name of the position.
Their boundary: the CIO governs internal systems and operations, the architect designs what the CTO decides and the code is written by the developers. The technical decision is theirs; the execution is not.
Technology strategyTechnology roadmapCloud architecture (AWSAzureGCP)Applied AI (OpenAIAnthropic)MVP and product discoveryB2B SaaSPythonTypeScriptReactNext.jsGoPostgreSQLCI/CDSecurity and complianceDevelopment team managementVendor evaluationTechnical due diligence
One provider. One contract. Full traceability
How Shakers works for your company
Post your project
Tell us about the project, its scope, the expertise you need and when you want to get to work.
You get three options
We match your brief against certified talent and introduce the three AI Builders who fit best.
The last word is yours
Meet the three specialists and choose who you collaborate with; we handle the rest.
Why work with Shakers
The advantages of adding this profile with Shakers
Executive decisions, without an executive
Strategy, architecture and technical priorities in a weekly commitment that fits: the judgement of an on-staff CTO without its fixed cost. For phases that do not justify a full-time hire.
The stack your phase asks for
MVP, scaling or rescue: AWS, Azure or GCP, applied AI when it adds up and standard when it does not. The stack gets chosen by the phase of the business, with its maintenance cost in view.
Four names, one point of contact
Fractional CTO, CTO as a Service, external CTO or 'director tecnológico freelance': however you search for it, here you find the person. The commitment format adjusts to the problem you bring.
Technical audit and due diligence
Rescue of inherited developments, a second opinion before a funding round and evaluation of vendors already invoicing. The report gets read and discussed line by line.
Continuity if the specialist moves on
If the specialist changes engagement, the strategy does not leave with them: the scope stays documented and another certified talent picks it up.
Certified in AI and agent skills
The technology direction of 2026 also decides where AI and agents enter the product. Certified talent tested on real systems, with the specialisation to show for it.
Frequently asked questions
Any other questions? Our team will answer them.
Tell us about your projectWhat is a Fractional CTO?
The technology executive who steers your technology part time and without joining payroll: strategy, architecture, vendors and the development team. The market also names the role external CTO, CTO as a Service and, already in Spanish search, 'CTO fraccional'.
Fractional CTO or CTO as a Service?
The same person, a different commitment: fractional is a senior integrated part time into your team; as a service is a subscription with a team behind it. It gets chosen by the problem: an MVP, a rescue, a scale-up or an audit each demand a different format.
How much does a Fractional CTO cost?
The mechanism sets it, not a single rate: commitment format, agreed weekly dedication, seniority and the phase of the company. An MVP and a technical due diligence do not cost the same. The budget closes per engagement before kickoff.
What is the difference between a CTO and a CIO?
The CIO runs the systems and internal operations: what already runs. The CTO decides the product and the technology that comes next: what does not exist yet. If the pain is internal infrastructure, you look for a CIO; if it is deciding the next technical bet, a CTO.
Does my SMB or startup need an external CTO?
If there is a digital product and no judgement to decide it, yes: launching from zero, rescuing a stalled development, scaling what works or auditing before investing. If the problem is managing the team you already have, what you need is an Engineering Manager.
How do I check they are a real Fractional CTO?
By counted decisions, not course titles: legacy systems reordered, roadmaps that got read, stacks chosen and defended. Certification runs on tests against real cases, and if the specialist moves on, another certified one picks up your strategy.
What gets delivered in the first weeks
The diagnosis of the system: what holds your current stack up, how much technical debt the product drags, which vendor costs more than it brings and where the flow into production breaks. The first deliverable arrives with the technology roadmap ordered by impact.
A market that changes its name
Four formulas for the same craft and one on the rise: search demand for CTO fractional in Spain grows +50% year on year, while the classic technology consultant deflates (Shakers market analysis, September 2026). The Spanish buyer already translates: 'CTO fraccional' starts to be searched as is, and 'director tecnológico freelance' is the real Spanish name of the role.
Which external CTO your moment needs
Launching an MVP from zero asks for discovery and a minimum stack; rescuing a stalled development asks for a legacy audit; scaling asks for architecture and team; a funding round or an acquisition asks for technical due diligence. The commitment formula, one person part time or a service with a team behind it, gets chosen after the problem, never before.
Where a Fractional CTO ends
At the decision. Whoever manages the team that already exists is the Engineering Manager; whoever designs the platform in detail is the architect; whoever runs internal systems is the CIO; and whoever writes the code is a developer, with a row of their own. The external CTO answers for the technology direction and for the judgement with which every technology euro gets spent.
Connect with AI specialists to build your next project
Find specialists in Tech, Product, Data to complement your team
Cloud Architect
Your Fractional CTO decides the technology and the architect designs it in detail. When the engagement is designing the platform on AWS, Azure or GCP and not setting strategy, the project goes through their row.
Backend Developer
Whoever turns decisions into systems: the APIs, the data and the server logic the roadmap commissions. The CTO defines what to build; this profile builds it, with a row of their own.
Full Stack Developer
The MVP your external CTO defines needs someone to deliver it end to end: frontend, backend and deployment in the same person. In small teams, your engagements cross paths every sprint.
DevOps Engineer
The operations of the stack your CTO steers: CI/CD, infrastructure and observability. When the pain lives in the pipeline and not in the strategy, it goes through their row.
The AI talent you need Certified by Shakers
We introduce you to three ready_to_build AI Builders in 72 hours.
