Growth-stage Boston companies frequently have the pieces of a marketing function — a few marketers, some agencies, a budget — but no one holding them together or on the hook for pipeline. Bringing in a full-time CMO would fix the ownership problem while creating a cost and timing problem most teams are not ready for.
This is where a fractional CMO earns its keep. Rather than gambling on a full-time executive, you embed a proven marketing leader part-time to set direction, build the engine, and take the number as their own. Most Boston companies find it is the most capital-efficient way to add the leadership they have been missing.
The role covers the whole function, not a slice of it. Brennen sets your positioning and message, builds the demand-generation engine that drives qualified pipeline for your Boston business, stands up analytics so you know what is working, and assembles the team and SOPs that keep it all running without him in the room every day.
A clear go-to-market for the Boston market and beyond — messaging your whole team can repeat.
Channels and campaigns that produce pipeline, measured to revenue instead of clicks.
The right hires, tools, and SOPs — a marketing department that runs itself.
Honest reporting that ties every dollar of spend back to pipeline and closed revenue.
A marketing budget allocated by someone accountable for the return on it.
Marketing that sales trusts and the board understands — one shared number.
The signals are rarely subtle. Revenue is real but growth has flattened. Spend is up but attribution is murky. A capable team is busy but rudderless. A fundraise is looming and the growth engine is not investor-ready. Each of these, on its own, is enough reason for a Boston business to bring in fractional marketing leadership.
Weeks 1–2: understand your funnel, goals, data, and the gaps holding Boston growth back — talk to sales, customers, and the numbers.
Weeks 2–4: lock positioning, choose the channels that fit your motion, and build a 90-day roadmap tied to revenue targets.
Weeks 4–8: install the systems, make or manage the hires, launch the channels, and start producing measurable pipeline.
Weeks 8–12 and on: attribution to revenue, cut what is not working, and double down on what is — then keep compounding.
The comparison is simple once you frame it. Full-time CMO: maximum leadership, maximum cost, slowest to onboard. Agency: maximum execution, minimal ownership. Fractional CMO: executive-level strategy and accountability on a part-time retainer, with the flexibility to scale up or transition to full-time when your Boston business is ready.
Fractional CMO rates work as a flat retainer billed monthly and scoped to your needs. A company that mainly needs strategy pays for fewer days; one that needs building pays for more. Either way it tends to run about a third to a half of a full-time CMO’s cost, which for most Boston, Massachusetts businesses is leadership that comfortably pays for itself.
Brennen brings the judgment of a senior executive and the hands of an operator. Boston companies get someone in the pipeline reviews and the hiring decisions, accountable for growth, building systems and SOPs that outlast the engagement — not a strategist who disappears once the slides are delivered.
The best marketing hire we made was not full-time. Brennen owned the strategy and the number from day one.
Client, B2B SaaS — CEO
A fractional CMO is an experienced chief marketing officer who leads your marketing on a part-time, ongoing basis instead of as a full-time employee. You get executive-level strategy, team leadership, and accountability for growth — at a fraction of the cost of a full-time hire, and without the long recruiting cycle or equity package.
Yes. Brennen Lesser works with Boston, Massachusetts companies as a fractional CMO — both remotely and on-site as the engagement requires. That includes founder-led startups, funded scale-ups, SaaS businesses, professional-services firms, and established B2B companies across the Boston metro.
Most fractional CMO engagements run at roughly 30–50% of a full-time CMO salary, billed as a flat monthly retainer with no equity and no long-term contract. The exact number depends on scope and how many days a month you need. For most Boston companies that is a meaningful saving versus a full-time executive who would command $250,000 or more in total compensation.
An agency executes tactics — ads, content, email — usually against a brief you provide. A fractional CMO sits a level above that: they set the strategy, decide which channels to invest in, hire and manage the people (or agencies) who execute, and own the results. Think of it as renting a marketing leader, not renting a marketing vendor.
If you have the budget, the workload, and the revenue to support a $250k+ executive full-time, hire one. If you need senior marketing leadership now but can’t yet justify that cost — or you want to de-risk the decision before committing — a fractional CMO gives you the same caliber of leadership scaled to your stage, and can help you hire your eventual full-time CMO when the time comes.
Most Boston engagements ramp in about two weeks. You skip the four-to-six-month executive search entirely — after a short discovery period, Brennen is embedded in your business, auditing the funnel and shipping a strategy while a full-time search would still be scheduling first-round interviews.
Typically seed-to-Series-B startups, SaaS companies, and growing B2B firms in Boston, Massachusetts doing roughly $1M–$50M in revenue — companies large enough to need real marketing leadership but not yet large enough to justify a full-time CMO on payroll.
Clear positioning your whole team can articulate, a demand-generation engine measured to pipeline and revenue, honest attribution so you stop wasting spend, and a marketing team and set of systems that keep producing after the engagement scales down. The goal is a self-sustaining function, not dependence on a consultant.
Both. Brennen works with Boston, Massachusetts teams remotely day-to-day and comes on-site for kickoffs, planning sessions, and key moments where being in the room matters. Modern marketing leadership doesn’t require a desk in your office five days a week.