Fractional Growth Leadership

Building Scalable
Growth Engines
for B2B SaaS.

Comtailer LLC delivers senior-level GTM strategy, revenue operations, and full-funnel optimization—without the overhead of a full-time executive hire.

Start a Conversation View Services
12+ Years Experience
Seed – B Stage Focus
B2B SaaS Primary Vertical
HealthTech Sector Specialization

What We Do

Three pillars.
One growth system.

Go-to-Market Strategy

We architect precise market-entry and expansion strategies grounded in customer insight, competitive intelligence, and monetization clarity. From ICP definition to positioning architecture, every GTM plan is built to generate durable pipeline.

ICP Development Positioning Architecture Messaging Frameworks Channel Strategy Launch Playbooks

Fractional Growth Leadership

Embed a senior growth executive into your team on a flexible, high-impact basis. We own strategy and execution across the full commercial funnel—acting as a Head of Growth without the full-time cost, scaling back when you're ready to hire in-house.

Head of Growth (Fractional) OKR & Metrics Design Team Building Investor Readiness Hiring Roadmaps

Marketing Tech Audits

We assess your existing stack—CRM, automation, analytics, and attribution—against your growth objectives and cut the noise. The output is a prioritized, AI-augmented roadmap that turns your MarTech investment into a measurable growth asset.

Stack Rationalization Attribution Modeling AI Integration Revenue Ops Alignment Lifecycle Automation

The Founder

Senior experience.
Human-first approach.

John Wayne Zimmerman is the founder and principal of Comtailer LLC—a North Carolina-based consultancy built at the intersection of commercial strategy and operational precision. With over 12 years operating as an embedded growth leader, John has built scalable growth engines for B2B SaaS platforms, HealthTech organizations, and enterprise clients including Google, Meta, and ABB.

His approach is direct and systems-oriented: growth is not a department, it is an operating philosophy. Every engagement begins with a structured commercial diagnosis and ends with a compounding, self-reinforcing growth system.

John currently serves as Head of Growth for Swishvo, a HealthTech startup building billing and practice management infrastructure for holistic healthcare providers—and advises a select portfolio of Seed to Series B companies through Comtailer.

Selected Client Experience

Google Meta ABB Unite Us Splash Terra Dotta Am. Medical Association Am. Cancer Society Four Seasons Hilton
  • 01
    Head of Growth — Swishvo
    Current engagement. Building the provider-side growth engine from zero across a fragmented maternal health ecosystem—defining ICP, designing multi-channel acquisition, and establishing the core metrics that compound.
  • 02
    Director, Growth Marketing — Unite Us
    Spearheaded growth and retention strategy supporting 22,000+ organizations. Drove 25% YoY adoption growth, 18% improvement in feature adoption, and built AI-assisted marketing workflows that accelerated competitive analysis and launch execution.
  • 03
    Head of Customer Marketing — Splash
    Built a customer advocacy and expansion engine generating $1M+ in new revenue within the first month of launch. Drove $2M+ in expansion revenue and reduced churn 20% through structured lifecycle and onboarding programs.
  • 04
    Senior Manager, Product Marketing — Terra Dotta
    Led product and revenue marketing for a multi-product B2B SaaS platform. Engineered GTM strategies increasing qualified pipeline in six months and re-architected revenue workflows to improve lead-to-customer conversion.
  • 05
    Marketing Consultant — Google, Meta, ABB
    Provided product and community marketing leadership across enterprise platforms: increased Google Cloud product usage 30%, Meta creator program participation 20%, and ABB customer engagement 85%.
  • 06
    Senior Program Manager — HFMA
    Led marketing strategy that grew membership 30% and helped scale revenue from $10M to $40M, including stewardship of a flagship annual conference generating $10M+ per year.

Built for the complexity of early-stage growth.

Growth at the Seed-to-Series B stage is not a linear problem. Markets shift, product-market fit iterates, and headcount constraints demand that every dollar and every hire compounds. Comtailer is purpose-built for this environment—bringing senior strategic rigor to teams that operate lean and move fast.

0%
YoY Adoption Growth
Sustained adoption growth delivered at Unite Us supporting 22,000+ organizations across health and social care networks nationwide.
$0M+
Expansion Revenue Driven
Expansion revenue generated at Splash through structured lifecycle marketing, feature adoption programs, and product-usage-based targeting.
0%
Churn Reduction
Measurable churn reduction through onboarding redesign, engagement lifecycle optimization, and customer health scoring frameworks.

Sector Experience

B2B SaaS
HealthTech & Health Infrastructure
Health & Social Care Networks
Holistic & Integrative Health
Enterprise Technology
Associations & Nonprofits

Work With Us

Ready to build
your growth engine?

We work with a focused number of clients at any given time to ensure depth of engagement. If you're a Seed to Series B company that needs fractional growth leadership, let's talk.

Reach Out Directly

john@comtailer.com Send a Message