Bi-monthly check-ins, deep thinking on strategic questions, and board-level deliverables. Three-month minimum, month-to-month, after.
02 — Anchor
Fractional CMO
$15–25K / month
Typically 6–24 month engagements that elevate the marketing function through a defined strategic push. Ends when the mandate completes or a permanent seat has been identified.
03 — Package
Scoped deliverable
$25–75K fixed
GTM Brain (6 weeks), Video Factory (8 weeks), Revamped Messaging & Positioning (8 weeks), Marketing Function Audit (4 weeks). Fixed fee, fixed end date.
The principal
Operator + network.
Jamie Grenney
Five-time CMO. GTM operator. Product partner to CEOs.
25 years building marketing functions that scale with the rest of the company.
Come for the expert. Get the network.
"I've spent 25 years investing in relationships with the best operators I know. When a project needs a specialist, I bring in a vetted partner who's an expert at their craft. We've worked together before. Trust has been established. We move fast."
100+Vetted operators across the network
Twenty-five years operating, advising, and partnering across high-growth B2B
Software and software-services companies, Series B through PE-backed, $10M to $250M in revenue. CEOs with a project that's important and hasn't moved — new positioning, an AI initiative, a channel motion, a brand reset, a category-defining moment. I come in to get it across the line.
The relationship is CEO-led — that's the shape that works best. Existing marketing leaders and CROs are partners on the work, not threats to it.
Recent work
A sample of what this looks like in practice.
FRACTIONAL CMO · 18 MONTHS
Thunder
Ran the marketing team and channel engagement strategy across Salesforce, Amazon, and ElevenLabs, and a dozen core industries.
Read case study →
FRACTIONAL CMO · 12 MONTHS
PE-Backed Software Company
Strategic mandate with a clear scope ceiling. Partner alongside an existing in-house marketing leader. Company valuation: ~$4 billion.
Read case study →
PROJECT · 8 WEEKS
SalesHood
Messaging and positioning workshop manifesting itself in the form of a website revamp and sales enablement.
Read case study →
From the Thunder engagement
Why Thunder's CEO hired a fractional CMO.
Carter Wigell · CEO, Thunder
If this sounds like your situation, let's talk.
20-minute intro calls are free and no-commitment. If we're a fit, terrific. If not, I'll often refer you to someone who is.
The work is most effective when the engagement shape is right. I've learned from the times it wasn't. Here's what I've optimized for.
The four-clause test
Best fit.
When we're likely to click
Software or software-services company
$10M–$250M in revenue
Series B through PE-backed
CEO-led relationship
Not a fit
Pre-Series A
Under $10M in revenue
Lack of CEO-level sponsorship
When this shows up
Four situations I work best in.
01
The project that has to ship
You have a project that's important and hasn't moved — new positioning, an AI initiative, a channel motion, a brand reset, a category-defining moment. I come in as the catalyst to get it across the line.
02
Between marketing leaders
The last VP left, the search is in progress, and you need a senior partner at your altitude holding the function together — and setting up the next leader to win on day one.
03
Under-invested function
You know the marketing org needs more than it has today. You don't want to staff up and find out — you want a senior operator to see the thing clearly first.
04
Vision without a partner at altitude
You have a clear picture of where the company is going. What you're missing is someone at the strategic altitude to build the marketing plan that gets you there.
From the Thunder engagement
How Thunder built an AI-native GTM.
Carter Wigell · CEO, Thunder
Does this sound like your company?
The Work page has three case studies that show what each of these shapes looks like in practice. Or skip straight to booking a call.
Hands when needed — build the deck, scope the project, recommend the architecture
Month-to-month after the first three months
02 / Anchor
Fractional CMO for a strategic push.
$15–25K / month
6–24 MONTHS
Fractional CMO for a defined strategic mandate
Elevates the marketing function through the strategic push
Ends when the mandate completes or a permanent seat has been identified
Partners with the existing marketing leader if one is in place
Best for CEOs running a board-level initiative or rebuilding the function
03 / Package
Scoped deliverables, fixed fee.
$25–75K fixed
4–8 WEEKS
GTM Brain — 6 weeks
Video Factory — 8 weeks
Revamped Messaging & Positioning — 8 weeks
Marketing Function Audit — 4 weeks
Other scoped deliverables on request
Best for companies that need a senior outside leader to drive on a key deliverable
The before and after
Six shifts that ship in six months.
What CEOs say before working with me — and what they say after.
"Our customers love us, but our prospects don't know what to do."
→
People understand what we do and why we win.
"Our process is loose."
→
Our GTM strategy is dialed in.
"We look and sound like everyone else."
→
We've established a premium brand that people love.
"Pipeline depends on the CEO's calendar."
→
Pipeline runs whether you're in the room or not.
"Our partner channel is a slide, not a number."
→
Partner-sourced pipeline is real and measurable.
"AI is on the roadmap."
→
AI is producing operating leverage today.
Work
Pattern recognition, in practice.
Three engagements that show what each shape looks like when it's working. More case studies will land here as engagements close.
Case 01 · Fractional CMO
Thunder
18 MONTHS · 2024–2026
Situation
Salesforce's fastest-growing implementation partner had a strong reputation, but lacked the go-to-market muscle and messaging clarity to keep pace with its big ambitions.
Outcome
Created a brand that clearly articulated Thunder's portfolio of services and winning differences. Expanded the industries and ecosystems Thunder served. Built a repeatable engine to drive channel-sourced pipeline.
What I did
Rebuilt the positioning, messaging, and brand from the ground up — launching a new website and refreshing all marketing materials
Documented processes, role definitions, workflows, and measurement, so marketing functioned like an API to efficiently get work done
Created a sophisticated channel engagement strategy with Salesforce, Amazon Connect, and ElevenLabs to generate partner-sourced pipeline
Acted as AI catalyst — identifying AI use cases and bringing them online to dramatically increase operating efficiency
Built a factory for video, creating personalized messaging to engage prospects and the channel
Increased event spend ROI by 2x and dialed in the process for supporting events
What made the shape work
An anchor engagement with a CEO-level relationship. I had a full seat on the executive team and managed a team of direct reports.
Case 02 · Fractional CMO
PE-Backed Software Company
12 MONTHS · ANONYMIZED
Situation
The CEO and CRO needed a senior partner at their altitude — not a replacement for the existing leader.
Outcome
Built a strong relationship with the in-house marketing leader, and delivered massive wins for the company. Nine months in, the in-house leader left to pursue another opportunity. I was able to serve as the bridge running the team while they searched for a long-term solution. The function was handed off in a cleaner, more efficient state, with a solid foundation to build from. Company valuation: ~$4 billion.
What I did
Scoped a 12-month strategic mandate with a hard scope ceiling
Partnered with the existing VP of Marketing — not above them, not around them
Ran the board and PE-side narrative directly with the CEO & CRO
What made the shape work
The partner pattern. Most fractional CMOs get brought in to replace the in-house leader. This engagement was explicitly designed not to. We set up swim lanes, and I built trust through regular on-site visits.
Case 03 · Project
SalesHood
8 WEEKS
Situation
SalesHood needed sharper positioning to support its product evolution and compete upmarket. The focus was clarifying its edge, differentiating from larger competitors, and elevating the brand.
Outcome
Aligned the executive team around a clear, differentiated narrative and brought it to life through a cohesive website and visual system. Enabled the sales team to consistently communicate it in market.
What I did
Conducted competitive, analyst, and customer research to ground the strategy
Synthesized insights into a clear POV on the buyer, market, and differentiation
Led a messaging and positioning workshop to align the executive team
Translated product capabilities into a sharp, differentiated narrative
Directed website and brand refresh, partnering closely with design
Developed interactive web elements to communicate core features and elevate the brand
Built sales enablement materials to operationalize the new positioning
What made the shape work
A short, focused project with a fixed scope. SalesHood got a senior outside lens and a usable foundation — no drift into ongoing engagement.
Words from the people I've worked with
Testimonials.
"Wow. Really well done. That's the best explanation I've seen of what they do in a concise format. Exciting."
Board Member · PE-backed vertical SaaS company
"When you took over the product team, it came alive. You carried us on your back."
"I joined this company specifically to work for you."
"You're in the top 10 of execs I've worked with in my 30-year career."
"I am grateful for all of the things I learned from you."
Team Members · Across Roles & Companies
Carter Wigell · CEO, Thunder · What Jamie actually does
Curious what the right shape looks like for your company?
The fastest way to find out is a 20-minute call. If we're a fit, terrific. If not, I'll often refer you to someone who is.
Essays on modern B2B GTM, scope design for fractional engagements, and the patterns I see repeating across software CEOs. Published when something is worth publishing — not on a schedule.
APR · 2026
What scope looks like at $10M versus $250M
Engagement design
MAR · 2026
The catalyst engagement: how to land the project that's been stuck
Fractional playbook
FEB · 2026
Three signs your VP of Marketing needs a partner, not a replacement
For CEOs
JAN · 2026
The modern AI contact center stack — what's real and what's hype
Category design
DEC · 2025
GTM Brain — Powered by AI: a six-week reset
Method
The podcast
Who Got Me Here.
A conversation with CEOs, founders, and investors about the people who shaped their path. Runs independently from Grenney & Co. — retrospective, not commercial. Twenty-four episodes in and counting.
Fractional CMO. GTM strategist. AI catalyst. Twenty years across three ecosystems, and one point of view about what modern B2B marketing is actually for.
Eleven years at Salesforce — started on the 800 line, grew up inside the company through the category-forming years. Five CMO seats since. Plus a stop at Okta as VP of Product Marketing & Enablement. I've partnered with Salesforce, Amazon Connect, ElevenLabs, and others, and advised early stage startups. Across all of it, I've run GTM at some level for 30+ B2B software companies.
What I've learned across those engagements is that the shape of the work matters as much as the work itself. CEOs don't usually need another full-time seat. They need a senior partner who can land the project that's been stuck — the new positioning, the AI initiative, the channel motion, the brand reset — and leave the function stronger on the way out.
Grenney & Co. is the practice I always wanted to build. A small number of engagements at any one time. A clear three-shape model. CEOs who want a catalyst at their altitude.
How I got here
Now
Grenney & Co.
Fractional CMO advisory for VC-backed software CEOs, $10M–$250M.
2024–26
Thunder
Led marketing through an 18-month GTM relaunch. Built a machine that scaled across ecosystems, industries, and product categories including Revenue Cloud, Agentforce Voice, Data Cloud, Contact Center, and AI.
Throughout
Built GTM, Channel, and Product partnerships
Across ElevenLabs, Amazon, Salesforce, SAP, VMware, and Google ecosystems.
2019–24
Connect The Dots
CMO & Head of Product at the relationship-intelligence platform.
2020–21
OwnBackup
CMO seat through two funding rounds and the company's evolution from single product to multi-product to multi-ecosystem. Acquired by Salesforce in 2024.
2013–2020
Okta, PlanGrid, Infer
Senior marketing leadership across three SaaS companies. VP of Product Marketing & Enablement at Okta — a 50-person team that chaired a 950-person sales kickoff with four keynotes, seven tracks, and seventy-two breakout sessions. CMO at PlanGrid, sold to Autodesk for $875M. VP of Marketing at Infer, a company that was an early entrant into the machine learning and predictive analytics space.
2002–13
Salesforce
Eleven years. Started on the 800 line and grew up inside the company through the category-forming years. Managed the inside sales team, signed the first partnership with Google, built product, started the IdeaExchange and MVP program, and ran marketing teams. This was the biggest break of my career — and the place I learned what category creation and scale actually requires.
My network
The people who shaped me.
I'm a believer that you become the product of the people you surround yourself with — and at high-growth companies, you have the chance to work alongside the best and brightest. That compounds. The faces below are a fraction of them — peers, mentors, builders. They're the people I learned from, the ones I bring into engagements when the work calls for it, and the back-channel references your team would talk to if they wanted to know what working with me is really like.
Contact
Tell me about your company. I'll come ready.
Primary path
Book a 20-minute intro call.
Tell me what you're trying to figure out. I'll come ready. Free and no-commitment.
"I work with a select group of companies. I'd rather be deeply engaged with a few companies than spread thin across many. The strategies I'm most committed to building compound, and longer engagements give us the runway for that to happen. Shorter engagements work too. A focused project or an advisory engagement can be a good way to test the fit before going further."
