Fractional CTO

A fractional CTO who builds, not just advises.

Senior, AI-native technology leadership without a full-time hire. I come in, solve the hard problem, and build the engineering and product team to carry it, one or two clients at a time, hands-on, until it's done.

$10M–$50M companiesAI-native teamsHands-on deliveryDirect, no firm
Oshri Cohen, fractional CTO
Oshri CohenFractional & Interim CTO
Why founders call me

You're here because something isn't scaling.

The symptoms are always different. The root cause rarely is.

The team can't scale

What worked at ten people and ten thousand users is breaking. Delivery is slowing exactly when it needs to speed up.

Technical debt is winning

Every change is risky, nothing is documented, and the backlog of "we'll fix it later" is now the thing holding you back.

A collaboration tax

Broken processes mean every decision costs three meetings. The org is paying a tax on its own communication.

Spend without leverage

Money is going out the door, headcount, tools, cloud, and you can't see the leverage it's supposed to buy.

What I actually do

Set direction. Build the team. Own delivery.

Strategy & roadmap

Technology strategy tied to the P&L, an architecture that scales, and a roadmap that picks the right battles.

Build the team

I hire the engineers and product people, and design an AI-native org around them, not a copy of the last company's.

Own the outcome

Hands-on architecture, delivery, security and compliance. I make the calls and stay accountable for the result.

How I work

In fast. Direct. Until it's solved.

I run one method — The Business-Down Method™ — and take one or two clients at a time, so the problem gets my full attention. The method is the discipline; the solution is always built for you, never off a shelf.

01

Read

Diagnose the system and the business.

02

Direct

Set the AI-native direction.

03

Build

Ship the systems, build the team.

04

Operate & Optimize

Run it, measure it, make it stick.

Measured in outcomes

A track record, not a pitch.

30+
Companies served as fractional & interim CTO since 2018
Low → Elite
DORA delivery performance, in 90 days
12
Engineering teams led across 7 countries
25yrs
In software; 20 in technology leadership

The method is the discipline — repeatable and accountable. The solution is never boilerplate, because the state of the art moves every quarter. I solve the problem in front of you with whatever is genuinely best right now.

Oshri Cohen
Pricing

What it costs, published.

A full-time CTO costs $400K–$750K all-in and takes three to six months to ramp. A fractional CTO gives you 60–80% of the value at a fraction of that — starting in the first 30 days. I publish my numbers so you can self-qualify before we talk.

From $20,000
Fixed · 2–4 weeks · yours to keep

The Diagnostic

The Business-Down read on system, org, spend and AI leverage, plus a 90-day plan you can act on with or without me. The best first step.

$10,000 / mo
~1 day a week

Advisory

Senior judgment on direction, architecture, hiring and roadmap. For teams that can execute but need the calls made right.

Most chosen
$18,000 / mo
~2 days a week

Fractional CTO

The full method, running. I set direction, build and hire the team, and own delivery — hands-on. Most engagements run 6–18 months.

$30,000 / mo
3+ days a week

Embedded / Interim CTO

Near-full-time leadership in the seat — for turnarounds, transitions, or covering the CTO role until the permanent hire lands.

Prefer a fixed scope? AI-Native Roadmap & Architecture sprints from $35K, PE technical due diligence from $15K/deal. Email me ↗

Common questions

What founders & boards ask.

What is a fractional CTO?

A fractional CTO is an experienced Chief Technology Officer who leads your technology part-time instead of as a full-time hire. You get senior judgment on strategy, architecture, hiring, security and roadmap without the cost or the six-month search for a full-time executive. Unlike a consultant who advises from the sidelines, I embed, make the calls, and stay accountable for the outcome.

How is this different from hiring a firm or a marketplace?

You work with me directly, no firm, no rotating bench, no account manager between you and the person doing the work. I take one or two engagements at a time so your problem gets solved quickly, and I'm hands-on: I build, I don't just advise.

What makes you an "AI-native" CTO?

I don't bolt AI onto an old operating model. I rebuild how the product is built and how the organization runs so AI is the default, in the SDLC, in operations, and in the team I hire, and I implement it directly.

Who do you work with?

Mostly $10M–$50M companies where software is core to the business — scaling, modernizing, rebuilding around AI, or being bought. Founders and boards who need senior technology judgment without a full-time hire, and the private-equity firms who back them. I'm based in Canada and work with US companies and remote teams.

How long is an engagement, and how is it priced?

Engagements last until the problem is solved — sometimes a month, sometimes a year — and most Fractional engagements run 6–18 months. Pricing is published and tiered by commitment: a fixed-fee Diagnostic from $20,000, then Advisory ($10K/mo), Fractional ($18K/mo), or Embedded/Interim ($30K/mo). Fixed-scope projects are available too. The best first step is the Diagnostic, or a direct conversation.

Who is this not for?

If you're a non-technical founder looking for someone to cheaply finish a no-code prototype, I'm not your person. This is senior, hands-on problem-solving for companies with real stakes.

Got a problem worth
solving properly?

I take one or two clients at a time. If the fit is right, I come in fast and stay until it's done.

hello@oshricohen.me(514) 777-3883Canada · USA · Remote