Brennen Lesser

Fractional CMO

Fractional CMO for Startups

Seed-to-Series-B founders: get a marketing leader who builds the engine and the team without burning runway.

Hire a fractional CMO
20+ yrs
Operating experience
30–50%
Of a full-time CMO cost
2 weeks
To ramp and start
The number
What I own

The problem

Early-stage startups need marketing leadership but cannot justify a full-time executive hire on limited runway.

How a fractional CMO fixes it

A fractional CMO installs repeatable growth systems and hires the right first marketers — capital-efficiently.

What a fractional CMO actually does

The job is to own marketing the way a full-time CMO would: strategy and positioning, a demand engine that produces qualified pipeline, attribution that ties spend to revenue, and the hiring and process work that leaves you with a functioning department rather than a dependency.

How the engagement works

01

Discovery & audit

Weeks 1–2: understand your funnel, goals, data, and the gaps holding growth back — talk to sales, customers, and the numbers.

02

Strategy & plan

Weeks 2–4: lock positioning, choose the channels that fit your motion, and build a 90-day roadmap tied to revenue.

03

Build & execute

Weeks 4–8: install the systems, make or manage the hires, launch the channels, and start producing measurable pipeline.

04

Measure & scale

Weeks 8–12 and on: attribution to revenue, cut what is not working, and double down on what is.

What you get

01

Strategy & positioning

A clear go-to-market and a message that converts — one your whole team can repeat.

02

Demand generation

Channels and campaigns that produce pipeline, measured to revenue instead of clicks.

03

Team & operations

The right hires, tools, and SOPs — a marketing department that runs itself.

04

Analytics & attribution

Honest reporting that ties every dollar of spend back to pipeline and closed revenue.

05

Budget ownership

A marketing budget allocated by someone accountable for the return on it.

06

Executive alignment

Marketing that sales trusts and the board understands — one shared number.

Fractional CMO vs. full-time CMO vs. agency

A full-time CMO gives you dedicated leadership but costs $250,000 or more all-in, takes months to hire, and is a heavy bet for a company still finding its stride. An agency gives you execution capacity but runs tactics against your brief — it does not own your strategy or answer for your revenue. A fractional CMO sits between: the ownership of an executive, part-time, at a fraction of the cost, scalable when you are ready.

How pricing works

Wondering how much a fractional CMO costs? Everything runs on a transparent monthly retainer. You are not giving up equity or signing a long contract, and the invoice does not move around. The retainer is set to your scope and, as a rule of thumb, comes in around 30–50% of full-time CMO comp — leadership that pays for itself in pipeline.

Why work with Brennen Lesser

Brennen is an operator who has built and led marketing teams from the inside — owning the number, not just advising on it. You get senior judgment, hands-on execution, and a system your team keeps running after the engagement scales down. He works like a member of your leadership team, not a consultant who hands you a deck and disappears.

He did not hand us a deck and leave. He built the system, hired the people, and stayed on the hook for results.

Client, B2B SaaSCEO

Frequently asked questions

What does a fractional CMO do?

A fractional CMO owns your marketing strategy, team, and growth systems on a part-time retainer — positioning, demand generation, analytics, and hiring — with accountability for pipeline and revenue, not just tasks.

How much does a fractional CMO cost?

Typically 30–50% of a full-time CMO salary, on a flexible monthly retainer scoped to your stage. You get C-suite marketing leadership without the $250k+ commitment or the long hiring cycle.

How is a fractional CMO different from an agency or a consultant?

An agency runs tactics and a consultant advises. A fractional CMO takes ownership — sets the strategy, builds and manages the team, and is accountable for the number, operating like a member of your executive team.

How quickly can a fractional CMO start?

Most engagements ramp in about two weeks. You skip the 4–6 month executive search and start making progress on strategy and pipeline almost immediately.

What size company is a fractional CMO right for?

Seed-to-Series-B startups, SaaS companies, and growing B2B firms — typically doing $1M–$50M in revenue — that need senior marketing leadership but cannot yet justify, or do not yet need, a full-time CMO on payroll.

What results should I expect?

A clear go-to-market strategy, marketing that sales trusts, attribution tied to revenue, and a team and system that keeps producing pipeline after the engagement scales down. The aim is a self-sustaining marketing function, not permanent dependence on a consultant.

Fractional CMO vs. full-time CMO — how do I choose?

If you have the budget, workload, and revenue to support a $250k+ executive full-time, hire one. If you need senior leadership now but want to de-risk the decision, a fractional CMO gives you the same caliber of leadership scaled to your stage — and can help recruit your eventual full-time CMO when the time is right.

How many hours or days a month does a fractional CMO work?

It varies by scope. A company that mainly needs strategy and oversight might need a few days a month; one that needs hands-on building needs more. The retainer is sized to the work, and it can flex up or down as your needs change.

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