Christopher Landaverde, Founder of Foco
Embedded marketing engineering for regulated teams.
Your marketing data is lying to you. I embed in your team and fix the measurement infrastructure underneath. Server-side tracking, conversion APIs, consent architecture built for compliance officers and marketing leaders alike.
Sectors
Healthcare
Finance
Education
Stack
sGTM · GA4 · BigQuery
Meta CAPI · Enhanced Conv.
Consent Mode v2 · Piwik Pro
20+
clients
5.0
rating
How we work together
Server-Side Tracking Migration
Move from brittle browser-based tags to server-side GTM + Conversions API. Regain data control, reduce site latency, close attribution gaps on Meta and Google.
Entry point · 2-4 weeks · Scoped engagement
HIPAA & Compliance-Safe Measurement
Marketing analytics infrastructure that meets HIPAA, GDPR, and CCPA requirements. Consent architecture, privacy-safe pipelines, audit-ready documentation.
Healthcare · Finance · Education
Embedded Measurement Engineering
I join your team for 3-6 months and own your entire measurement stack. GA4, BigQuery, attribution modeling, reporting infrastructure. End-to-end.
Full engagement · Ongoing · End-to-end ownership
Most marketing teams are optimizing based on data that's lying to them.
I've seen companies kill their best-performing channels because an attribution window was misconfigured.
I've seen retargeting campaigns credited with revenue they never drove.
The tools aren't the problem. The measurement architecture underneath them is.
Common finding
Meta CAPI sending deduplicated events without hashing. 40% of conversion data invisible to the algorithm.
Common finding
GA4 cross-domain tracking broken on subdomain handoff. 30% of user journeys attributed to direct.
Common finding
Consent mode not gating tags correctly. PHI flowing to Google Ads in healthcare environment.
What clients say
Trusted by marketing teams at scale.
"Chris was a pleasure to work with. His knowledge of Google Tag Manager, GA4, tags, and Google Ads was instrumental in diagnosing and solving problems needed for a tricky issue across multiple sites, accounts, and conversion locations. Would work with him again and recommend him for others."
Upwork Client
GTM / GA4 / Google Ads Diagnostics
"Chris was attentive, clear and was able to convey the errors in my GTM/GA4 setup easily. Also got the job done quickly!"
Upwork Client
GTM / GA4 Error Diagnosis
"Chris was great to work with. Good communication, diligent and willing to solve problems that were unclear with context. Definitely would work with Chris again."
Upwork Client
Tracking Implementation
"This was money well spent as Christopher helped me better understand GA4 so that I can find the info I need for our clients."
Upwork Client
GA4 Consulting
5.0 rating across all Upwork engagements. Verify on Upwork →
Blog
Recent Writing
Cross-Domain Tracking in GA4: Why 30% of Your Journeys Show as Direct
When users move between your domains, GA4 often loses the session thread and attributes conversions to direct traffic instead of the original source. Here's how to diagnose and fix broken cross-domain tracking.
How to Tell If Your GA4 Attribution Is Wrong
Your GA4 reports show strong performance, but revenue doesn't match. Here's how to diagnose when GA4 attribution is inflating your numbers and what to do about it.
Server-Side Tracking for Google Ads: Enhanced Conversions Setup
Setting up Google Ads Enhanced Conversions through server-side GTM requires specific data handling that most implementations get wrong. Here's how to configure it correctly and avoid the common pitfalls.
Open Source Tools
View all →ConsentFlow Debugger
Debug and validate consent management platform implementations in real time.
Hoagie
The media planning toolkit that lives inside Excel.
Rabbit
Multi-touch attribution that shows which marketing channels actually drive conversions.
AdLint
Free, privacy-first audit tool for Google Tag Manager and Google Ads.
Not sure where your measurement stack stands?
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