Skip to content

Mario Neto.

Fractional CMO & Marketing Leader for B2B SaaS

I help early-to-growth-stage B2B SaaS companies turn “we think we know our story” into positioning that holds, a go-to-market everyone agrees on, and execution that actually ships. I also write about marketing and have an interview series called fCMO, Fueled by Coffee, Marketing Optional.

A decade across content, GTM, and the story before the pitch.

I have been working with marketing for well over 10 years and ran marketing for companies in many industries before moving into B2B SaaS. That path is why I read GTM problems differently and can adapt easily to any new industry. This is why I chose the path of becoming a fractional CMO.

As Fractional CMO at Kalungi, I work with early-stage B2B SaaS founders scaling from MVP toward T2D3, across client ARR from $0 to roughly $30M.

I'm not an outsourced leader. I am an internal partner in the businesses I'm in to strategically build marketing for my clients.

10+
Years in B2B SaaS & content marketing
$0$30M
ARR client range advised
10+
Companies advised
6 + industries
Industries: pharma, telecom, commodities, education, gaming, martech
What I’m known for

“Mario has a habit of asking the one question nobody else on the call wants to answer. It’s usually the one that actually matters.”

Former client · Series B SaaS, $18M ARR
Currently
  • Kalungi · Fractional CMO, since May 2025
  • Onyx IQ · Fractional CMO, since July 2025
  • Tell Jules · Fractional CMO, since March 2026
  • Akraya · Fractional CMO, since July 2026
Companies I’ve helped grow
Kalungi
Agency
Onyx IQ
Fintech
Fintech

24 net new logos in 1 year. ~700K in new ARR.

Tell Jules
AI Tech
Akraya
Tech Services
Vision Group
Retail Tech
Retail Tech

Generated $2M+ pipeline in 12 months.

Bïrch
MarTech
MarTech

Doubled the organic MQLs in 6 months.

Galaxies
GameTech
UOL EdTech
EdTech
Skore
EdTech
EdTech

Acquired by UOL EdTech, one of the largest media groups in Brazil.

Espresso3
L&D
L&D

Brought in $1MM in services.

The concepts I actually use with clients, short and specific.

001

The GTM fit test

Before you build pipeline, answer five questions about fit. Most GTM motions fail somewhere before the first outreach, not during it.

Readiness
002

The first quarter is three different jobs

Month one builds foundations: ICP, messaging, systems. Month two builds the engine: channels, content, cadence. Month three is the optimization. Run them out of order, or try to speed them up and nothing compounds.

Onboarding
003

T2D3 model

Triple ARR two years running, then double it three years running.

Growth strategy
004

The handoff that kills growth

Sales-to-CS handoff is where most GTM value leaks. Redefining what counts as “closed” fixes more of it than any new handoff template ever will.

Customer success
005

The capacity-first diagnostic

Before funding demand, answer whether the org can handle double the leads and double the customers it already has. Most GTM spend leaks here first.

Diagnostic
006

The content flywheel

Most content is funnel-shaped: built to attract, then forgotten. Run it as a flywheel instead, so one case study fuels the next ad, deck, and landing page rather than starting from zero.

Content strategy

The problems worth working on are never clean.

I take on a small number of engagements each year with B2B SaaS founders and GTM leaders who are at an inflection point. Real work on the real problems.

Fractional CMO leadership

Embedded advisory at the VP or CMO level. For companies that need senior GTM thinking without the full-time hire.

GTM diagnostic

A structured review of your go-to-market motion, pipeline, ICP, team, positioning, with a prioritized action plan.

Positioning workshop

A working session to get the company aligned on one sentence: what you sell, to whom, and why it matters now.

Content & GTM partnership

Ongoing support building the story, the channel mix, and the content engine behind it.

Currently available for
Q3 2026 engagements
1 spot remaining
What people say

“Mario asks the question everyone else skips: can we actually handle what we’re asking for. That question saved us two quarters of wasted spend.”

Founder · B2B SaaS, $12M ARR

“The capacity-first diagnostic changed how we planned every quarter after that. We stopped funding pipeline our team couldn’t service.”

VP Marketing · B2B SaaS, $8M ARR

fCMO – Fueled by Coffee, Marketing Optional

A short-form interview series you can watch on a coffee break. I sit down with other fractional CMOs, marketers, founders, and clients to talk fractional marketing leadership, GTM, and the business of B2B SaaS. Or sometimes nothing about marketing at all.

Follow on LinkedIn & watch the videos

Essays on GTM, positioning, and the business of marketing.

01

The best/better/only framework works, until founder bias, leadership echo chambers, and shallow questioning make your positioning a mirror instead of a map

Positioning
02

Most B2B SaaS founders invest in marketing before knowing if their team can handle the growth. Here's why capacity planning comes first.

Demand Gen
03

Founders should be proud of what they build. Yet product pride can distort positioning when the market tells a different story. Here’s how to spot it and reset around real customer input.

Positioning