About
Bilingual marketing, built in Jacksonville since 2016.
We run marketing for businesses across the country, in English and Spanish, and we show you what it does.
Arthur Carrion
Founder, Carrión Marketing and Sonríe
Who runs it
The person behind the work.
Arthur Carrion founded 904SEO in 2016, grew it into Carrión Marketing, and built Sonríe, our own AI product for dental practices. An MBA with a background in tech marketing and sales, and still the person who reviews the accounts we run.
- MBABusiness strategy, finance and operations, applied to growth.
- Tech marketing and salesA career spent on both sides of the funnel: generating demand and closing it.
- Agency founder since 2016Founded 904SEO, a bilingual English and Spanish agency, which grew into Carrión Marketing.
- AI product founderBuilt and launched Sonríe, an AI smile preview product used by dental practices.
How we got here
It started with one idea: most agencies were ignoring half the market.
- 2016
904SEO launches in Jacksonville
Before Carrión, our founder launched 904SEO in December 2016 as a fully bilingual English and Spanish digital marketing agency, serving Jacksonville and clients nationwide.
- Then
The work grows past search
Search led to paid ads, then to brand, websites, apps, CRM and follow up, because a lead is only worth something if someone answers it.
- Now
Carrión Marketing and Sonríe
Carrión runs marketing for businesses anywhere in the US. Sonríe, our dental technology company, builds smile simulations and runs patient acquisition for dental practices.
How we work
The things we will not budge on.
Your accounts, in your name
Ad accounts, analytics and the work we build belong to you, including if you leave.
A real person on your account
A named contact you can call directly, not a shared inbox.
Straight reports
Everything we can track, in plain English, and a clear line where tracking stops.
English and Spanish
Bilingual since day one, written by native speakers.
Our companies
Two companies, one standard.
Carrión Marketing
Search, ads, brand, websites, apps, CRM and reputation for businesses anywhere in the country.
See services →Sonríe
AI smile simulations for dental practices, so patients see their new smile before the consult.
Visit sonrie.ai →Sonríe Growth
Patient acquisition for practices and DSOs, reported from lead to new patient.
Visit Sonríe Growth →Free audit
Send us your website. We will show you where the calls are leaking.
A person on our team reviews your website, your Google listing and your ads, then sends you a short recorded walkthrough of what to fix first. Free, within two business days, and no call required.
Rather talk it through? Book 20 minutes with the person who would run your account, or call (904) 206-8877.