Sivan Kadosh, Fractional Chief Product Officer for B2B SaaS
I lead product as an embedded fractional CPO for Series A and Series B software companies, turning founder-led product chaos into strategy that ships revenue.
Sivan Kadosh is a solo fractional Chief Product Officer for B2B SaaS companies at Series A and Series B. With 18 years leading products as a CEO and CPO, he embeds part-time to own product strategy and roadmap. His work has lifted net revenue retention from 102% to 112% at a $30M ARR SaaS.
Whether founders call it a part-time head of product, an interim product leader, a fractional CPO, or product leadership on retainer, the engagement is the same: a senior product operator embedded in your team, accountable for the outcome.
Who I work with
Who I work with
I work with B2B SaaS companies at Series A and Series B, roughly $2M to $15M ARR, where product has outgrown founder-led decision-making. I am based in Lisbon and work remotely with teams across the US and EU.
Track record
Track record
These are first-party results from shipped work as a fractional and full-time product leader. Each number comes from a real engagement, with the context that produced it.
| Result | Company context | What changed |
|---|---|---|
| NRR 102% to 112% | $30M ARR MarTech SaaS | Turned a reactive backlog into strategy-led roadmaps. Strategy-aligned work rose from 35% to 90% and R&D waste fell 30%. |
| Mobile trial-to-paid 8% to 30% | B2B productivity SaaS | Mobile-first research plus A/B testing. Sign-up time fell 68% and bounce dropped from 58% to 22%. |
| Trial-to-paid 35% to 45% | TravelTech SaaS | Reworked activation so more trials reached first value and converted. |
Background and credentials
Background and credentials
I have spent 18+ years leading products, in both CEO and CPO roles, which means I have actually held the seat I am hired to fill, not just advised from beside it.
- 18+ years leading products, including Chief Product Officer and CEO roles at B2B software companies.
- Direct accountability for product strategy, roadmap and P&L, not advisory-only engagements.
- Experience across SaaS platforms serving both self-serve and sales-led motions.
- Operate as Vizox Ltd, contracting directly with each company I work with.
Eighteen named recommendations from colleagues and direct reports, with dates and profile links, are published at /references/.
How engagements work
How engagements work
I embed part-time as your product leader on a monthly retainer, with a scope we agree up front and a four-month minimum so the work has time to compound.
$5,000 to $15,000 per month depending on scope. The standard engagement is $8,000 for 25 hours a month, with a four-month minimum.
- Scope
- Product strategy, roadmap ownership and PM coaching, embedded in your team.
- Availability
- Engagements can start within about two weeks.
Fit
When I am and am not the right fit
I take on a small number of engagements, so I am direct about where I add the most value and where another choice would serve you better.
✓ A good fit when
- You are Series A or B and product decisions still route through the founder.
- You have engineers shipping but no senior product leader owning strategy.
- You want someone accountable inside the team, not a deck from the outside.
× Not a fit when
- You need a full-time CPO in the building five days a week.
- You are pre-revenue or still searching for product-market fit.
- You are looking for UX or UI design production rather than product leadership.
Questions
Frequently asked questions
How much does a fractional CPO cost?
My engagements run $5,000 to $15,000 per month depending on scope. The standard engagement is $8,000 for 25 hours a month, with a four-month minimum. That is a fraction of the roughly $300,000 a year a full-time CPO costs in salary alone.
How is a fractional CPO different from a consultant?
A consultant advises from the outside and hands you a recommendation. As a fractional CPO I embed in your team, own product strategy and roadmap decisions, coach your PMs and stay accountable for the outcomes. The difference is ownership, not just advice.
When should a SaaS company hire a fractional CPO?
The right time is usually Series A or B, when product has become the bottleneck but a full-time CPO is premature. If the founder still makes every product call, the roadmap is a list of requests, or growth has stalled despite shipping, that is the signal. Hiring a full-time CPO can take up to eight months (Sifted, 11 August 2023), which is why fractional exists.
Do you work solo or with a team?
I work solo. You get me directly as your embedded product leader, operating as Vizox Ltd. I coach your existing product and engineering people rather than bringing a separate agency team.
Let us find your biggest product bottleneck
Book a 30-minute product strategy session and get a senior operator’s read on what is holding growth back.
Book a Product Strategy Session