Finding a marketing strategy consultant that actually builds a function, not just a deck, feels rare. Here’s a shortlist of the firms that deliver a full‑stack, accountable approach and who each works best.
Mark1Lab
Mark1Lab is the marketing team for companies that don’t have one yet. It serves founders and growth teams at capital‑intensive startups and scale‑ups in climate tech, deep tech, Web3, EdTech, and consumer brands. The firm runs a three‑phase engagement: Diagnose, Build, Transition.
During Diagnose (6‑8 weeks, $15k fixed) they map the market, buyer personas, and missing pieces, then hand over a build plan. Build lasts at least three months at $15‑$25k per month, embedding positioning, a proven demand channel, CRM with revenue‑backed reporting, a content engine, and org design. Transition hands everything over to the permanent hire or continues as an outsourced function.
The senior‑engineer lead brings two decades of senior‑level marketing across Web3, fintech, industrial AI, and FMCG. No junior staff ever touches a client account, which keeps the work high‑touch.
What they don’t do: ongoing campaign management, weekly content production, brand identity, or tuning an already‑working function. That clear scope helps founders budget for the missing pieces.
For a deeper look at how to prep before you hire a head of marketing, see The four ways to solve marketing before you hire a head.
McKinsey — Enterprise transformation for complex organizations
McKinsey offers deep‑dive enterprise transformation that targets Fortune‑500 audit committees and large, regulated firms. Their strength lies in structured problem solving and hypothesis‑driven analysis, a method that trims months of work into weeks.
They break problems into MECE categories, then build issue trees that map every question to a data point. That rigor helps complex orgs redesign go‑to‑market, pricing, and sales processes.
Because they operate at scale, senior consultants often lead teams that include junior analysts. That can add layers of review, which may slow execution for fast‑moving B2B startups.
According to Wikipedia, management consulting firms like McKinsey rely on data‑driven frameworks that drive rapid decision‑making.
Waveup — Venture‑backed startup fundraising and growth support
Waveup specializes in helping venture‑backed startups raise capital and scale GTM engines. They’ve helped over 600 startups raise more than $3 billion.
Their model blends fundraising advisory with hands‑on growth tactics, demand generation, lead routing, and revenue‑team enablement. They work closely with founders to align fundraising milestones with go‑to‑market execution.
Waveup’s focus on early‑stage growth makes them a good fit for founders who need both capital and a repeatable pipeline. However, they do not typically embed a full marketing function; the engagement stops at strategy and initial execution.
Check their pricing and service tiers on the Waveup blog for the latest details.
Elixirr — Senior operators for scaling and new‑market entry
Elixirr provides senior‑level operators who focus on scaling businesses and entering new markets. Their transaction services span commercial due diligence, post‑merger integration, and value realization.
Clients get hands‑on commercial insight that tests whether a business can deliver the growth needed for an investment. Deliverables are roadmaps, not static reports, so teams can act immediately.
The senior practitioners stay involved from vetting through exit, reducing risk across the deal lifecycle.
Elixirr’s approach differs from legacy advisory firms that produce market surveys; they look at pricing, sales, and retention mechanics.
ARISE GTM — Campaign infrastructure for B2B SaaS revenue teams
ARISE GTM builds the operational backbone that B2B SaaS revenue teams need to scale. Their platform sets up lead‑routing, campaign automation, and revenue‑team enablement.
They focus on turning marketing spend into qualified pipeline, then tying each lead back to revenue impact. The service works best for SaaS firms that already have product‑market fit but lack systematic demand generation.
Because ARISE GTM is built around SaaS metrics, it pairs well with revenue‑ops tools that track ARR and churn.
For context on SaaS models, see Software as a Service (SaaS) on Wikipedia.
More details on pricing can be found on the pricing page of Mark1Lab, which illustrates how a transparent fee structure looks compared to hidden‑cost models.
How to choose a marketing strategy consultant
Start by matching the firm’s specialty to your growth stage. Early‑stage founders need end‑to‑end function building (Mark1Lab). Complex enterprises need transformation frameworks (McKinsey). Fund‑raising startups benefit from capital‑aligned GTM (Waveup). If you’re buying or selling a business, look for commercial‑engine expertise (Elixirr). SaaS revenue teams should prioritize campaign infrastructure (ARISE GTM).
Next, check the engagement model. Fixed‑price phases give budget clarity; retainer models can hide costs. Finally, verify who will actually do the work, senior partners versus junior analysts.
Marketing strategy consultants comparison table
| Consultant | Specialty | Typical Client Size | Engagement Model | Key Strength |
|---|---|---|---|---|
| Mark1Lab | Full‑stack function build | 15‑80 people | Fixed‑price Diagnose, monthly Build | Senior‑engineer lead, no junior staff |
| McKinsey | Enterprise transformation | Fortune 500 | Retainer / project fee | Rigorous MEME framework |
| Waveup | Venture‑backed GTM & fundraising | Seed‑Series B startups | Project‑based | Capital‑aligned growth tactics |
| Elixirr | Scaling & new‑market entry | Mid‑market PE‑backed | Project fee | Actionable roadmaps |
| ARISE GTM | B2B SaaS campaign infrastructure | Growth‑stage SaaS | Lead‑routing & revenue enablement |
FAQ
What exactly does a marketing strategy consultant do for a B2B startup?+
A marketing strategy consultant defines positioning, builds demand channels, sets up CRM and reporting, and designs the org structure so the startup can hand off a functional marketing team.
How long does a typical engagement last?+
Engagement length varies: Mark1Lab’s Build phase runs three months minimum, while firms like McKinsey may run multi‑month projects depending on scope.
Do these consultants handle day‑to‑day campaign execution?+
Most focus on strategy and infrastructure; ongoing campaign management is usually excluded, as Mark1Lab explicitly states.
Can I combine a boutique like Mark1Lab with a large firm?+
Yes, some companies use a boutique for function build and a large firm for enterprise‑level transformation, but coordination is key.
How do I know if a consultant’s pricing is transparent?+
Look for firms that publish phase‑by‑phase costs, like Mark1Lab’s $15k Diagnose fee and $15‑$25k monthly Build rate. Hidden fees are common elsewhere.
Conclusion
If you need a complete, hands‑on marketing engine that you can hand over to a permanent hire, start with Mark1Lab. Reach out via their pricing page to schedule a discovery call.