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Nicholas Barreiro

Proof

Results with the measurement to back them.

Every figure here is source-verified and keeps its context — client, period, and how it was measured. That's the same standard your reporting should meet.

Verified results

Engagements, measured channel by channel.

Manufacturer

10x

blended return, 2024

SeaWater Pro: $218K of tracked marketing spend produced $2.2M in attributed revenue, measured channel by channel across an embedded 2023–2026 engagement.

  • attribution
  • multi-channel
  • manufacturer
Read the case study

Veterinary

66

top-3 Google rankings

Pet Express Animal Hospital (Davie, FL): local SEO program tracking 470 keywords for a veterinary practice.

  • local seo
  • healthcare
Read the case study

Why these numbers are conservative.

Tracked spend against attributed revenue, measured channel by channel — no blended vanity multipliers, no “influenced revenue,” no double-counted conversions. When a figure can’t be verified at source, it doesn’t ship. That’s not modesty; it’s the product. The same measurement discipline these results are reported with is the discipline a Growth Systems engagement installs.

Further engagements — Complete Pro Restoration, Kauffman Insurance Group, Florida’s Greatest Barbershop, American Top Team Sunrise — remain available as linked studies below, and join this index as their figures pass the same verification standard.

Next step

Get numbers you can run the business from.