A growth lab for lead gen.
GrowthStackLab is a St. Petersburg, Florida agency that brings scientific discipline and practical AI to lead generation.
Built for teams that live on leads.
Lead generation has never had more tools, or more ways to waste money. Traffic gets more expensive, forms fill with junk, and real prospects wait hours for a callback while competitors reach them first.
GrowthStackLab was founded in St. Petersburg to fix that with a lab mindset: treat every part of the funnel as a system that can be measured, tested, and improved. We pair experienced media buyers and funnel builders with data engineers who put AI to work where it moves the numbers, scoring, screening, and following up with every lead.
We work with lead buyers, call centers, and growth teams across the United States.
Our lab principles.
Test before you scale
Every idea is a hypothesis until data proves it. We run controlled experiments before committing budget.
Measure what matters
We optimize for contacted, qualified, and sold leads, not cheap form fills.
Full transparency
You see the sources, scores, costs, and outcomes behind every decision.
Humans in the loop
AI assists our team and yours. People approve scripts, claims, and rules.
Consent first
Clear consent, documented records, and fast opt-outs on every program.
You own your data
Your leads, accounts, pages, and outcome data belong to your business.
Our AI commitments.
- Automated assistants always identify themselves as automated.
- We contact only people who gave the required consent, and honor opt-outs immediately.
- People review and approve scripts, knowledge bases, claims, and routing rules.
- Scores come with reasons, so decisions can be explained and checked.
- Models are monitored for drift and retrained on real outcomes.
- Client data is used to deliver that client's program, never shared with other clients.
The people behind the stack.
Every client works with a cross-functional team. You'll meet yours during onboarding.
Head of Growth Strategy
Owns program design, offer economics, and the experiment roadmap for each client.
Performance Media Lead
Runs search, social, and native campaigns, budgets, and audience testing.
AI & Data Engineer
Builds scoring models, data pipelines, and the integrations between forms, CRMs, and buyers.
Conversational AI Specialist
Designs assistant flows, knowledge bases, and human handoff rules.
Funnel & CRO Designer
Designs and tests landing pages, quizzes, and multi-step forms.
Compliance & Quality Analyst
Reviews consent language, monitors lead quality, and maintains audit trails.
Based in St. Petersburg.
GrowthStackLab7901 4th St N, Ste 300
St. Petersburg, FL 33702
We work with clients nationwide from Florida's Sunshine City.
Let’s build your growth stack.
Tell us where your leads come from today and where they get stuck. We'll suggest the first experiments worth running.
