Kerri Martin.
Founder and Managing Partner of StratX. 15+ years operating Customer Success, Implementation, and Operations functions inside growth-stage B2B SaaS. Built StratX because the consulting model most SaaS companies actually need doesn't exist yet.
15 years inside growth-stage SaaS post-sale.
2018–2024
VP of Customer Success
Series D Vertical SaaS
Led a 28-person CS organization through three funding rounds and one acquisition cycle. Took GRR from 81% to 94% and NRR from 102% to 118% over six years. Built the playbook, comp model, and segmentation that the new owners kept intact post-acquisition.
2014–2018
Director of Implementation & CS
Growth-Stage SaaS, acquired
Joined as the first dedicated post-sale leader at $4M ARR. Built the function from two CSMs to fifteen across CS, Implementation, and Renewals. Company was acquired at $32M ARR; the CS function was cited in the diligence as a leading reason for the multiple.
2010–2014
Senior CSM, then Manager
Early-Stage SaaS, acquired
Joined a Series A SaaS company as employee 14 and the first CSM. Stayed through the acquisition and integration. The first reps and roles she trained still cite the playbooks she wrote a decade later.
The thesis behind the firm.
After 15 years inside SaaS, the same conversation kept happening on the way out the door. A founder, a CRO, a board chair: the post-sale function isn't where it needs to be. They'd looked at the options. Big consulting firms hand you a strategy without the operators to execute it. Boutique agencies sell hands without the senior judgment. Recruiters take six months to seat a full-time hire. None of it fit the actual gap.
StratX is built around that gap. Senior operators only. Strategy and execution in the same engagement. Fixed scope. Embedded, not from a distance. The model is simple to explain and harder than it looks to run, which is why the firm is intentionally small.
The goal is not to build a 100-person consultancy. The goal is to be the firm growth-stage SaaS companies call when the post-sale function has to actually work, and to be confident, every time, that we'll leave the company better than we found it.
Four beliefs that shape every engagement.
Post-sale is the product.
Most SaaS companies sell a future and try to deliver a feature. The post-sale function is what closes that gap, every day, for every customer. Treat it as a function of the product, not a function of the org chart.
Strategy without execution is a slide deck.
The work is the work. Frameworks help only insofar as they shorten the path from diagnosis to a thing that ships. StratX is built around senior practitioners because the gap between knowing and doing is where most consulting fails.
Fixed scope respects everyone's time.
Hourly billing rewards drift. Fixed scope forces us to be precise about what we're solving and disciplined about how we get there. The cost goes on the contract; the risk goes on us.
Independence is the point.
We don't sell software, we don't take referral fees, and we don't recommend platforms that aren't right for the company. The roadmap goes wherever the data leads.
Want to talk directly?
Discovery calls with prospective clients run through the contact form. For anything else, Kerri is reachable by email or LinkedIn.
Want Kerri on your post-sale engine?
Discovery calls are 30 minutes, focused entirely on your situation.