I design, build and validate your whole tagging stack: the data layer, GTM Server-Side or Tealium, Conversion APIs for Meta, LinkedIn and Google Ads, and Consent Mode v2 on OneTrust, Cookiebot or Usercentrics.
Collect
Website & app events
Consent
OneTrust · Cookiebot · Usercentrics
Structure
Data layer specification
Route
GTM Server-Side · Tealium EventStream
Consented, deduplicated, validated
Self-check
Tick what sounds familiar. Each problem has a known fix.
Recognize any of these? A 30-minute call is enough to find the cause.
Book a free discovery callFour disciplines, one engineer. Hire me for one of them or for the whole pipeline, from the first data layer event to the conversion your ad platform sees.
One maintainable container your whole team can trust.
Web and server-side containers, designed, built and documented. I set up GTM Server-Side on your own subdomain or Tealium iQ and EventStream, migrate legacy tags, and leave naming conventions and a release process behind.
Numbers you can make decisions on.
It starts with a measurement plan tied to your business goals, then a data layer specification your developers can build against. I configure GA4 and validate every event against the spec before it reaches a report.
Ad platforms with enough signal to optimize.
Server-side conversions for Meta, LinkedIn and Google Ads, deduplicated against the browser pixel and enriched only with consented first-party data. HubSpot tracking connected, so a lead can be traced from ad click to deal.
Compliant tracking that keeps every consented conversion.
Google Consent Mode v2 wired to OneTrust, Cookiebot or Usercentrics, with defaults, updates and regional settings tested before launch. As a certified DPO I review what fires before consent, so Legal and Marketing get the same answer.
Not sure which one you need? That's what the discovery call is for.
Book a free discovery callTag management, analytics, ad platforms and consent, connected into one pipeline. No Adobe: I go deep on these instead.
Eli C.
MarTech & Analytics Engineer
I've worked on data and tracking for teams at Allianz, BMW, Motorola Solutions and other global brands, in past roles and projects. Today I work directly with marketing, analytics and engineering teams as a freelancer: I write the data layer spec, build the containers and validate the result before handover.
No juniors, no account managers. You work with the engineer who builds it.
* Freelance consulting is provided solely as an independent private individual (t/a Anelitics), outside of employment hours and not affiliated with, endorsed by, or representative of Motorola Solutions. To prevent conflicts of interest, consulting services exclude direct competitors of my employer and high-risk verticals (gambling, crypto, adult content). For more details, please visit the Privacy Policy & Legal Notice.
// Consent is enforced in the container, so this
// push is safe to run for every visitor
window.dataLayer.push({ ecommerce: null })
window.dataLayer.push({
event: "purchase",
// Shared with the server-side CAPI call,
// so Meta and LinkedIn count it once
event_id: "purchase.T_12345",
ecommerce: {
transaction_id: "T_12345",
value: 249.0,
currency: "EUR",
items: [{
item_id: "SKU_77",
item_name: "Starter kit",
price: 249.0,
quantity: 1
}]
}
})I don't just configure tags; I build the data architecture underneath. Every implementation is version-controlled, documented and built to survive frontend updates.
Clear steps, written scope and a handover your team can own.
30 minutes on your stack, your goals and what's broken. You leave with a clear next step, whether or not we work together.
I review your containers, consent setup and data flows, then send a written proposal with scope and price.
Built in staging first and released in versioned containers, with your developers working from the same data layer spec.
Every event is checked against the spec, in debug tools and in the platforms, then documented so your team can own it.
Step 1 is free and takes 30 minutes.
No. I focus on Google Tag Manager, GTM Server-Side and Tealium, so every project gets deep expertise rather than a shallow pass across every vendor. If your stack is built on Adobe, I'm not the right fit.
Not always. Server-side tagging pays off when ad blockers and browser cookie limits cost you conversions, when you send data to several ad platforms, or when you want control over what third parties receive. For a small site with a few tags, a clean web container is often enough. That's what the discovery call is for.
Both are solid. GTM suits most teams on the Google stack: the web container is free, and server-side only needs cloud hosting. Tealium iQ and EventStream suit enterprises that need vendor-neutral governance across many brands and destinations. I implement both, so the recommendation follows your needs, not what I sell.
Consent defaults that load before any tag, updates triggered by your CMP, the ad_user_data and ad_personalization signals, regional settings where you need them, and a tag-by-tag check that nothing fires before consent. You get a short written record of what was tested.
Yes. I integrate OneTrust, Cookiebot and Usercentrics, and any other CMP that offers a Consent Mode v2 integration or a JavaScript API. Custom banners can be connected through the data layer.
No. Dropping cookies does not drop the consent requirement: EU ePrivacy rules cover any storing or reading of information on a device, and GDPR still applies to personal data. I design setups that stay measurable within those rules.
Insights
Technical and legal deep dives on consent, cookieless tracking and GTM.
What Consent Mode v2 sends to Google before consent in Basic and Advanced mode, how EU and UK rules apply, and how to set up each one in GTM.
Whether analytics without cookies need a consent banner, country by country, and what the UK's 2026 analytics exception actually covers.
GTM rejects ES6 in Custom HTML. type="text/gtmscript" gets modern code past the compiler, untranspiled and unvalidated. How it works and how to test it.
Tell me about your stack. You get a reply within 24 business hours.