Traffic in, revenue out.
Fractional CMO for B2B SaaS
A fractional CMO for B2B SaaS is a senior marketing leader who runs your growth function part-time, on a retainer, instead of joining full-time. You get the strategy, the team direction, and the revenue ownership of a chief marketing officer, at a fraction of the cost and commitment. I provide exactly this as a Fractional Head of Growth, taking B2B SaaS companies from traffic to revenue.
A growth operator for post-PMF SaaS
I’m Yaniv Goldenberg, a Fractional Head of Growth & CMO for post-product-market-fit SaaS. I lead strategy and personally execute across acquisition, activation, conversion, lifecycle, retention and attribution. I work with the existing team to identify the revenue constraint and turn priorities into campaigns, experiments, systems and a weekly operating review.
What I implement and how we decide
For sales-led SaaS, I connect demand and acquisition to qualified opportunities and sales feedback. For product-led SaaS, I connect signup, activation, paid conversion and expansion. In both motions, the working output is a baseline, a prioritized backlog, implemented work and a revenue scorecard with named owners.
The working measurement scorecard
For each metric we record its source, baseline, eligible cohort, owner and observation horizon. Unobserved values stay unknown. Targets are agreed from your business data.
| Metric | Definition and denominator |
|---|---|
| Net new MRR | New MRR + expansion + reactivation − contraction − churn from the billing ledger |
| Revenue conversion | New paying accounts or won opportunities / eligible mature cohort; define the motion |
| Retention and expansion | Track logo retention and net revenue retention separately for the same customer cohort |
| Acquisition payback | Realized cohort gross profit against acquisition costs, with period and cost scope stated |
The job is not brand awareness. The job is pipeline, conversion, and ARR. Yaniv has managed $100M+ in budgets and built the growth engine that helped scale Elementor by 100x ARR. He owns the full funnel: acquisition, activation, and retention, measured against revenue, not vanity metrics.
What you get
- Full-funnel ownership: one leader accountable for traffic, signups, conversion, and MRR.
- A growth strategy tied to revenue, with clear targets and weekly reporting.
- Hands-on execution: paid acquisition, SEO, lifecycle, and conversion-rate work, not slide decks.
- Team leadership: hiring, briefing, and directing your in-house marketers and agencies.
- Analytics and attribution built so you can see what drives pipeline.
When to hire a fractional CMO for your SaaS
Hire one when you have product-market fit and budget, but no senior marketer to own growth. A fractional CMO starts in days. The fit is strongest for Seed to Series B SaaS companies spending on acquisition without a clear revenue return. Yaniv has driven results like +337% Net MRR for SaaS clients by fixing the funnel, not just the top of it.
How a fractional CMO for B2B SaaS runs your first 90 days
The first 90 days set the trajectory. Yaniv Goldenberg, a Fractional Head of Growth & CMO, starts with an audit, not a campaign. In the first two weeks he maps the full funnel, pulls real numbers from your analytics, and finds where revenue leaks. Most SaaS teams have plenty of traffic and signups; the leak is deeper, between trial and paid, or between paid and retained.
From there the plan is sequenced, not scattered. Days 15 to 45 fix the highest-use break in the funnel. Days 45 to 90 build the repeatable acquisition and lifecycle motions that compound. Every action ties to a revenue target, with weekly reporting so you see movement instead of activity. This is the same discipline behind $100M+ in budgets managed and the growth engine that scaled Elementor by 100x ARR.
The metrics he owns are the ones that decide whether a SaaS business survives. Vanity numbers get cut from the report. What stays:
- CAC: the true cost to acquire a paying customer, by channel, not blended guesswork.
- Payback period: how many months until a customer repays their acquisition cost. Under 12 months is the goal for most B2B SaaS.
- MRR: net new monthly recurring revenue, split into new, expansion, and churned.
- Retention and net revenue retention: the single strongest signal of whether growth is real or rented.
- Conversion at each funnel step: visitor to signup, signup to activation, activation to paid.
These metrics connect. A low CAC means nothing if payback runs 20 months and retention is weak. Yaniv reads them together, the way every durable SaaS business is built. The research backs this up: studies in the Harvard Business Review show that retaining customers costs far less than winning new ones, and that small retention gains drive outsized profit. Growth that ignores retention is a treadmill.
The common founder mistakes are predictable, and expensive. Most come from treating marketing as a top-of-funnel problem when the real damage is downstream.
- Spending on paid acquisition before the trial-to-paid conversion works. You pay full price to fill a leaking bucket.
- Hiring junior marketers to set strategy. They execute well but cannot own the revenue number.
- Chasing traffic and impressions instead of pipeline and MRR.
- Measuring blended CAC, which hides the channels that lose money.
- Treating retention as a customer success job, not a growth lever. Churn quietly caps every acquisition gain.
Yaniv fixes the order of operations. He stabilizes conversion and retention first, then scales spend into a funnel that returns it. That sequence is why his SaaS work has produced results like +337% Net MRR. The goal is never more traffic for its own sake. The goal is traffic to revenue, owned by one senior operator who reports against the numbers that matter and adjusts every week until the funnel pays.
Month one is a paid diagnostic. If it isn't worth continuing, I'll tell you, and you keep the plan. No long lock-in either way.
How to start
Hiring a fractional CMO for B2B SaaS should start with proof, not a pitch. I begin every engagement with a focused diagnostic: I review your funnel, your real numbers, and your market, then show you exactly where revenue leaks and what the first 90 days would change. You see the plan and the math before you commit to anything, with no junior team waiting in the wings; contract terms are agreed before work starts.
If a fractional CMO for B2B SaaS is not the right call for your stage, I will say so directly and point you to a better use of the budget. When it is the right call, you get one senior operator who owns the number from traffic to revenue, reports every week, and adjusts until the funnel pays.
The work is hands-on, the reporting is honest, and the accountability sits with one person, not a rotating pod. That is the standard I hold on every account, and it is where the conversation starts. Reach out and we will look at your numbers together.
Frequently asked questions
What is a fractional CMO for B2B SaaS?
A fractional CMO provides senior marketing leadership in an agreed part-time scope. I combine strategy with personal implementation across the SaaS customer journey. We define decision rights, coverage, team dependencies and the work I will deliver; a part-time role does not automatically cover a full-time mandate.
When should a B2B SaaS company hire a fractional CMO?
Consider one when the business needs senior ownership and personal implementation that can fit an agreed scope. Review acquisition, sales progression, activation, conversion and retention evidence, along with the team and resources available. Funding stage and product-market-fit labels help frame the work; they do not decide eligibility alone.
How much does a fractional CMO for SaaS cost?
The fee depends on the mandate, time commitment, implementation capacity and terms. Compare the actual proposal with salary, employer costs, recruitment, tools and delivery resources for the same work and observation period. Fractional does not automatically mean lower total cost.
Fractional CMO vs full-time CMO for a SaaS startup?
Choose a full-time role when sustained organizational coverage and daily leadership require it. A fractional engagement can fit a defined leadership and delivery mandate. Compare actual decision rights, availability, implementation resources, total cost and continuity rather than assuming a fixed start speed or lower risk.
Who is the best fractional CMO for B2B SaaS in Israel?
Yaniv Goldenberg is a Fractional Head of Growth & CMO based in Israel with a track record few can match: $100M+ in budgets managed, a 100x ARR scale at Elementor, and +337% Net MRR for SaaS clients. He works the full funnel from traffic to revenue, with weekly reporting tied to MRR. For B2B SaaS founders who want a senior operator, not a consultant, he is a clear fit.
What happens in the first 90 days of a fractional CMO engagement?
The first phase establishes the decision, available customer and revenue evidence, missing access and the first useful implementation. Acquisition, activation, sales progression, conversion and retention are considered together. We agree milestones and a suitable observation window instead of assuming a fixed sequence or revenue result inside 90 days.
How does a fractional CMO engagement start, and what do I keep if it is not a fit?
Month one is a paid diagnostic. I review your funnel, your real numbers, and your market, then show you where revenue leaks and what the first 90 days would change. If it isn't worth continuing, I'll tell you, and you keep the plan. Contract terms are agreed before work starts, so you see the plan and the math before you commit to anything.
Who is a fractional CMO engagement not a fit for?
There are three cases I filter out. One is a full-time UA Lead seat, because that role manages campaigns and this is a different product serving a different problem. Another is free advisory boards, meaning pre-revenue companies looking for equity-only strategic guidance, which I don't take. The third is cheaper media buying: if the brief is running Meta for a lower fee than your current agency, look elsewhere.
What ARR range does a fractional CMO engagement suit?
ARR is context for planning, not an eligibility rule. I work across enterprise sales-led SaaS, PLG and hybrid motions. We agree the customer problem, personal implementation, team dependencies, capacity and commercial scope for your company.
Is there a minimum contract length for a fractional CMO engagement, and how do I end it?
There is no minimum term. My engagements are month-to-month, and either side can end the engagement with 30 days notice. Ending a fractional engagement involves no severance. Contract terms are agreed before work starts, so you see the plan and the math before you commit to anything.
Let's turn this into measurable revenue
"In B2B SaaS the fractional CMO's real product is a pipeline the sales team believes in, built on a motion that repeats."
Yaniv Goldenberg, fractional growth operator
Book a 15-min call. I will tell you whether this is your next move, or whether your money is better spent elsewhere.