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Growth Marketing Consultant: What They Do, Cost & How to Hire One (2026)

Stuart Brameld

Stuart Brameld

Founder
Updated:
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A growth marketing consultant is an external expert who uses data analysis, experimentation and iterative testing — rather than brand-building alone — to drive measurable customer acquisition, retention and revenue growth. Below, we cover what they do, what they cost, and how to hire the right one for a B2B team in 2026.

What does a growth marketing consultant do?

A growth marketing consultant’s role is critical in amplifying a business’s trajectory towards greater levels of success. They use an array of tactics, from data analysis to creative campaigns, to fuel customer acquisition, retention, and revenue growth. In essence, their function revolves around identifying the most successful strategies to raise brand awareness, engage the target audience, and accelerate business growth.

The key difference between a growth marketing consultant and a marketing consultant lies in their focus areas. While the latter generally concentrates on building and maintaining a positive brand image or developing marketing strategies, the former goes beyond these tasks. A growth marketing consultant deeply engages in data analysis, uses analytics to set clear targets, and employs iterative methodologies like A/B testing to continuously refine the digital marketing tactics, thereby aiming not just at customer attraction but overall business growth. Learn more about what growth consultants do and how to hire one.

How can a growth marketing consultant help you?

Growth Marketing Consultant vs In-House Hire vs Agency

Hiring a growth marketing consultant is one of three common ways to add growth capability to a B2B team. Here’s how the options compare:

Growth Marketing Consultant In-House Hire (e.g. Growth Marketing Manager) Full-Service Agency
Cost Project or retainer-based, scales with scope Fixed salary plus overhead, ongoing Retainer, often the highest total cost
Speed to impact Fast — brings proven frameworks and existing testing playbooks Slower — ramp-up time to learn the business Moderate — depends on onboarding and scope
Control & embeddedness High — typically works directly with your team Highest — part of the team day-to-day Lower — external execution partner
Best for Validating a growth motion or filling a specific skills gap Teams ready to own growth as a core, ongoing function Teams that want a channel (e.g. paid, content) fully outsourced

If a consultant proves the growth motion works, many B2B teams then hire a Head of Growth or growth marketing manager to own it in-house.

The world’s leading growth marketing consultants

Want to learn from the world’s growth marketing consultants? Below is our list of the most experienced growth professionals to follow for growth trends, strategies and tactics.

1. Sean Ellis

Sean Ellis is the author of Hacking Growth (a Random House international bestseller), host of the Breakout Growth Podcast, and teaches growth at leading business schools such as Harvard, UC Berkeley Haas, GKGSB (Beijing), INSEAD (France), Imperial College (London) and through the GoPractice Immersive Simulator Program.

Last known place of work: GrowthHackers

Find more about Sean Ellis online at the following links:

2. Morgan Brown

Director, Product at Instagram. Previously worked at Shopify and Facebook. Author of Hacking Growth with Sean Ellis.

Last known place of work: Instagram

Find more about Morgan Brown online at the following links:

3. Andrew Chen

Andrew Chen is a partner at Andreessen Horowitz, where he invests in games, AR/VR, metaverse, and consumer tech startups. He is the author of The Cold Start Problem, a book on starting and growing new startups via network effects. From 2015 to 2018, Chen led the Rider Growth product team for Uber.

Last known place of work: Andreessen Horowitz

Find more about Andrew Chen online at the following links:

4. Brian Balfour

Founder/CEO @ Reforge. Previously VP of Growth at HubSpot, Entrepreneur in Residence at Trinity Ventures, Co-Founder of Boundless, Co-Founder of Viximo, Co-Founder reCatalyze & PopSignal.

Last known place of work: Reforge

Find more about Brian Balfour online at the following links:

5. Casey Winters

Helped drive Grubhub from 3 cities to 1,000+ and from a $1 million series A to now an $9+ billion market cap. Joined Pinterest and led the growth product team where he turned SEO into a scalable acquisition strategy, increased conversion to signups/mobile 5x. Most recently, Chief Product Officer at Eventbrite. Now Growth Advisor in Residence at Greylock Partners and advisor at Reforge.

Last known place of work: Advisor at Whatnot and Eventbrite, Partner at Reforge

Find more about Casey Winters online at the following links:

6. Mayur Gupta

Mayur Gupta is the Global Vice President for Growth & Marketing at Spotify, responsible for driving growth and innovation by testing new business models, partnerships and engagement strategies along with establishing marketing capabilities for fans, artists and B2B brand partners.

Last known place of work: Spotify

Find more about Mayur Gupta online at the following links:

7. Jeff Chang

Head of Growth Engineering at Whatnot. Previously Growth Engineering at Pinterest, Growth Advisor at Canva, Upwork and Lyft. Angel investor in Linear, Supermove and others.

Last known place of work: Whatnot

Find more about Jeff Chang online at the following links:

8. Kieran Flanagan

I’m an SVP of marketing at HubSpot a marketing and sales software company. I’m also an author, startup advisor, and mentor.

Last known place of work: HubSpot

Find more about Kieran Flanagan online at the following links:

9. Scott Tousley

Helping solve our climate crisis at Persefoni. Previously spent 7+ years at HubSpot working on freemium growth strategy across marketing, product, operations, and sales. Investing in Seed and Series A climate tech startups. Focused on energy storage, electric transportation, and various software verticals. Spend my spare time nerding out in the Reforge community and taking long walks on the beach.

Last known place of work: Persefoni

Find more about Scott Tousley online at the following links:

Want to hire a growth marketing consultant?

Below is a list of recommend websites and communities to hire an experienced growth marketing consultant.

About Growth Method

The best growth marketing consultants bring exactly what most in-house teams lack: a disciplined, experiment-led process. But that discipline shouldn’t leave when the consultant’s contract ends. Growth Method is the agentic marketing platform for B2B teams — built so the hypotheses, tests and results a consultant runs stay in one place your team owns long after the engagement wraps.

For a team working with a growth marketing consultant, that means:

We are on-track to deliver a 43% increase in inbound leads this year. There is no doubt the adoption of Growth Method is the primary driver behind these results.

Laura Perrott, Colt Technology Services

If you’re bringing in a growth marketing consultant, book a call to see how Growth Method keeps their process running after they’re gone, or apply for early access to start building your own experiment backlog today.

Frequently asked questions

What does a growth marketing consultant do?

A growth marketing consultant uses data analysis, experimentation and iterative testing (like A/B tests) to identify and execute the marketing tactics that most effectively drive customer acquisition, retention and revenue growth, rather than focusing solely on brand and campaign execution.

How much does a growth marketing consultant cost?

Rates vary widely by experience and scope, from a few hundred dollars a day for a junior freelance consultant to several thousand dollars a month for a senior practitioner running a full growth programme. Many consultants offer project-based or retainer pricing rather than hourly rates.

Is a growth marketing consultant right for a B2B company?

Yes, particularly for B2B teams that have a growth goal but lack in-house experimentation experience. A consultant can bring proven frameworks and hands-on testing discipline, though many teams eventually bring this capability in-house once the growth motion is proven.

What’s the difference between a growth marketing consultant and an agency?

A growth marketing consultant typically works directly and hands-on with your team on strategy and testing, often as an embedded or fractional resource. An agency usually takes on execution of a defined scope of work (such as paid media or content) with less involvement in your day-to-day growth process.

What’s the difference between a growth marketing consultant and a marketing consultant?

A marketing consultant typically focuses on brand image and broader marketing strategy. A growth marketing consultant goes further, using data analytics to set clear targets and iterative methodologies like A/B testing to continuously refine tactics aimed at measurable business growth.

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