CTO-as-a-Service for Visionary Founders

You have the vision. We build the tech foundation.

You're a non-technical founder with a clear product vision but no technical foundation in place. We take full technical ownership and build your R&D the right way, so you can grow without fearing costly mistakes.

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30+
Years of Tech Expertise
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85%+
Upgrade to Full Services
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95%
Client Retention Rate

Sounds familiar?

Most founders recognize it too late, and spend the next six months
paying for it.

?

Just raised - and investors are asking hard tech questions

We solve this!

New capital means new scrutiny – architecture, scalability, security, roadmap. We give you technical leadership to answer with confidence, without a full-time co-founder. No more answering blind; one wrong answer won't shake confidence fast.

?

MVP is live - and it's cracking under real users

We solve this!

It worked in demo. Now it's live and the cracks are showing – performance, bugs, data loss. We provide the right technical leadership to take ownership and fix it – because this is fixable, but only with someone who owns the outcome.

?

"Vibe-coded" product that won't survive scale

We solve this!

The MVP was built fast – and you know it. The wrong architecture today becomes the painful rewrite next year. We help you own the fix before it becomes a liability – with leadership that takes responsibility for the architecture, not just the patch.

?

No internal tech leadership - and every decision feels risky

We solve this!

You're focused on growth and fundraising – we provide the technical leadership you need to know who to trust, which vendors to pick, and which tradeoffs will hurt you later.

?

A vendor or agency left you with half-built systems

We solve this!

They shipped something. Then they left. Now you have code no one understands, no documentation, and no continuity. We bring ownership – not just another pair of hands.

?

You're building something genuinely new

We solve this!

Pioneers don't follow a playbook. We act as your technical partner who can think ahead – one who's built at the frontier before and knows which bets are worth making.

Founders who trusted us with their vision

stars
AutoPark
Founder & CEO
"We came in with a vision and zero technical team. 5Blue became our entire R&D - from day one they owned every decision and we launched without a single costly mistake."
stars
Claro
Co-Founder
"Eran challenged our early architecture
assumptions in the first week. That alone
saved us from a rewrite six months later. He didn't just build - he de-risked us."
stars
Safe-haven
CEO
"We had a vibe-coded MVP that investors were starting to question. 5Blue rebuilt the foundation, answered the hard tech questions, and gave us the confidence to raise."
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Is this you?

Read these. If you nod at most of them - we should talk.

You're a fit if...

You're a non-technical founder at Seed or Series A

You have a clear product vision but no technical foundation in place

You've spent money on freelancers or agencies and it didn't work

You're worried about making the wrong early tech decisions

Investors are asking hard tech questions you can't answer alone

You want someone who owns the outcome - not just executes tickets

Probably not a fit if...

You already have a CTO or strong internal R&D team

You're pre-idea or pre-funding

You need a single developer for a quick task

Typical Profile

Stage

Seed - Series A

Team size

0–5 people

Tech team

None yet

Product type

Tech product

CTO-as-a-Service

We take full technical ownership and build your R&D foundation the right way - so you can grow without fearing costly mistakes.

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We Own the Stack
From architecture decisions to cloud infrastructure to deployment pipelines, we build your entire R&D department from scratch so you never have to worry about the technical foundation.
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A Full Team, Not Just Freelancers
You get a dedicated senior engineering team managed by our CTO. Think of it as your in-house R&D, without the overhead of building it yourself.
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Architecture That De-risks Your Investment
Our CTO Eran personally architects every project. His experience with 50+ products means your tech foundation is built to scale, not crumble.
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Right Decisions. Full Ownership.
We guide your choices on tools, strategy, and architecture so you save time, cost, and energy. Then we take full ownership of the entire technical execution, no guesswork, no delays.

Choose your level of involvement.

Not every founder needs the same thing. Start where you are, scale the
engagement as you grow.

Architectural Audit & Scalability Roadmap

Understand exactly where your tech stands — and what to tell your board.

A one-time review of your codebase and infrastructure by our CTO, resulting in a report on technical debt, risks, and a prioritized roadmap.

Full codebase & infrastructure teardown

Technical debt & security risk identification

Prioritized, execution-ready technical roadmap

Investor-ready architecture narrative

Request an Audit

Fractional CTO & Board-Level Advisory

Strategic technical leadership to protect your runway and your vision.

Ongoing part-time CTO support: guidance on technical decisions, review of your current team or vendors, and a roadmap aligned to business goals.

Technical strategy & architecture governance

Weekly leadership syncs & roadmap prioritization

VC, Board, & Investor technical support

Vendor evaluation & team performance audits

Book a Free Call

The Fully Managed R&D Department

We take 100% ownership. You get an elite techteam, governed by a world-class CTO.

A senior engineering team managed by our CTO, handling planning, development, and quality control for your product.

Day-to-day engineering execution by pre-vetted 5Blue senior talent

Continuous architectural oversight by our CTO

Agile sprint planning, delivery, and strict QA standards

Zero hiring overhead, zero retention risk, zero wasted sprints

Discuss Your Needs

Technical Due Diligence Prep

Walk into investor meetings with unshakeable confidence.

Preparation for investor technical due diligence: architecture documentation, security and compliance review, scalability assessment, and a mock due diligence session.

Investor-ready technical documentation

Security & compliance readiness review

Scalability & infrastructure defense

Mock technical due diligence session

Prepare for Due Diligence

Emergency CTO Intervention

When things are breaking and you need helpnow.

Short-term emergency support when a system fails or technical leadership is lost: stabilization, incident triage, and a recovery plan with team transition.

48-hour emergency response

System stabilization & triage

Critical incident management

Recovery roadmap & team transition

Get Emergency Help

Team Mentorship & Upskilling

Build internal capability while we guide fromabove.

Ongoing mentorship for your engineering team from our CTO: code review standards, process improvements, and technical leadership development.

Weekly 1:1 mentorship with senior engineers

Code review & quality standards training

Process & workflow optimization

Technical leadership development

Level Up Your Team

Three steps to your dream product

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3

Discovery Call

We sit down with you to understand your vision, market, timeline, and funding. No fluff - just a clear picture of what needs to be built and how.

Architecture & Team Assembly

Our CTO designs the technical architecture and hand-picks a senior team tailored to your product. You review and approve everything before a single line of code.

Build, Ship, Scale

We operate as your embedded R&D team, delivering working software every sprint. You stay in the loop without the burden of managing engineers.

Senior expertise guiding your vision.

Talent
Dr. Dan Bar-Yehuda
CTO
Dan is a tech leader with 10+ years in high-tech. PhD in Neuroscience from Bar-Ilan University, specializing in scalable systems and technical leadership.
LinkedIn
Talent
Shlomi Aflalo
CEO
Shlomi is an experienced tech entrepreneur with a diverse background across various technologies with a specialization in computer science.
LinkedIn
Ready to turn your vision into reality?

Book a free 30-minute call with our CTO. No sales pitch, just an honest conversation about your product, your challenges, and how we can help.

Book Your Free Strategy Call