Diego Zietek
Diego Zietek is an independent paid media consultant with 14+ years of hands-on experience running Google Ads, Meta Ads, LinkedIn Ads and programmatic campaigns for B2B, B2C, SaaS, healthcare and pharmaceutical companies. He operates Diwizi alone: the person who audits the account is the person who runs it and writes the report. He works remotely from Curitiba, Brazil, with clients in the United States, Canada, the United Kingdom and Europe in English, and with Brazilian companies in Portuguese.
What Diego does, in one paragraph
Diego Zietek plans, runs and reports on paid media accounts himself. There is no account manager between him and the client, no junior team, and no agency: Diwizi is his consultancy and he is its only consultant. The work is Google Ads (Search, Shopping, Performance Max, Demand Gen), Meta Ads, LinkedIn Ads and Microsoft Advertising, plus the measurement underneath it (GA4, Google Tag Manager, offline conversion import). Engagements are a fixed-price audit or a month-to-month retainer; everything built stays in the client's own accounts.
The facts a buyer usually asks for
- Role
- Founder and sole operator of Diwizi; independent consultant, not an agency and not an employee of any client
- Experience
- 14+ years running paid media accounts hands-on
- Platforms
- Google Ads (Search, Shopping, Performance Max, Demand Gen), Meta Ads (Facebook e Instagram), LinkedIn Ads, Microsoft Advertising, Programmatic
- Industries
- Healthcare, B2B SaaS and HR Tech, Pharmaceutical marketing, Local services (HVAC, plumbing, home services), E-commerce
- Markets
- United States, Canada, United Kingdom, Ireland, Portugal and Brazil, remotely, in English and Portuguese
- Based in
- Curitiba, Brazil (GMT-3), working US and European hours as needed
- The person who audits the account is the person who runs it and writes the report.
- Pricing is a fixed-price audit or a flat monthly retainer, never a percentage of ad spend, so there is no incentive to push budget up. Details on the pricing page.
- Campaigns, conversion actions and tags live in the client's accounts. If the engagement ends, the client keeps all of it.
- Reporting is written for owners: revenue, cost per customer and what changed, not click counts.
One person, and what that changes
What is public and what is not
Published, with dates and limits: the Mission AC & Plumbing engagement (Houston, freelance, May 2025 to February 2026) and a freelance role for a US pharmaceutical marketing agency (September 2023 to March 2024), both described on the results section. Not published: five years of senior in-house paid media work in healthcare. That employer is not named anywhere on this site, and no budgets, results or internal details from it appear here. It is mentioned only because it is where much of Diego's healthcare experience comes from.
First-party research: the Paid Media Cost Index (median Google Ads CPC across six US industries, with methodology, date and reuse terms) and the ad spend teardowns built from public advertiser data.
Published work
Every article on the Diwizi blog and on diwizi.com.br is written by Diego. Statistics in them carry a named source or are framed as what happens in the accounts he runs; the site does not publish client lists, aggregate ROI figures or certifications, because those cannot be checked by a reader.