Certified GTM Expert
Google Tag Manager Specialist: Expert GTM Implementation That Drives Results
Stop losing conversions to broken tags and incomplete tracking. Our GTM specialists have 15+ years experience building measurement infrastructure for DTC brands, agencies, and enterprises.
GTM Specialist Services
From quick audits to full server-side implementations — we handle every aspect of Google Tag Manager.
GTM Audit & Fix
Comprehensive audit of your existing GTM setup. We identify broken tags, duplicate fires, missing conversions, data layer issues, and consent gaps — then fix everything.
- Full container health check
- Broken tag identification & repair
- Data layer validation
- Consent Mode v2 compliance
- Documentation of all changes
Server-Side GTM Implementation
Full server-side Google Tag Manager setup with conversion APIs. Capture 30-40% more conversions by bypassing ad blockers and ITP restrictions.
- Server-side GTM container (Cloud Run)
- Google Ads Enhanced Conversions
- Meta Conversion API (CAPI)
- First-party cookie domain
- Ad blocker bypass configuration
GA4 + GTM Migration
Complete GA4 implementation through GTM with custom events, e-commerce tracking, and enhanced measurement — built properly from day one.
- GA4 property setup & configuration
- Custom event tracking
- E-commerce data layer
- Cross-domain tracking
- BigQuery export configuration
E-Commerce Tracking
Full e-commerce tracking implementation for Shopify, WooCommerce, Magento, or custom platforms. Every product view, add-to-cart, and purchase captured accurately.
- Complete data layer implementation
- Product impression & click tracking
- Cart & checkout funnel tracking
- Revenue & transaction tracking
- Cross-platform attribution
Consent Mode v2 Setup
Implement Google Consent Mode v2 with your CMP to maintain ad targeting while respecting privacy. Required for EU/EEA advertising since March 2024.
- CMP integration (Cookiebot, OneTrust, etc.)
- Google Consent Mode v2 configuration
- Consent state testing & validation
- Advanced vs Basic consent mode setup
- Geo-targeted consent flows
Conversion API Integrations
Direct server-to-server conversion tracking for Meta, TikTok, Pinterest, LinkedIn, and Snapchat. Send deduplicated, enriched conversion events through APIs.
- Meta Conversion API (CAPI)
- TikTok Events API
- Pinterest Conversion API
- LinkedIn Conversions API
- Event deduplication setup
Why Choose TagSpecialist as Your GTM Expert
We're not a generalist agency — we're data engineers who specialize in measurement infrastructure.
15+ Years of Tracking Experience
Not a generalist agency — we're data engineers who specialize exclusively in GTM, GA4, and server-side tracking.
Direct Access to Engineers
No account managers or middlemen. You work directly with the people writing your tags and building your pipelines.
451% Average ROAS Improvement
Our implementations don't just track data — they recover conversion signal that directly improves ad platform performance.
Enterprise-Grade, Boutique Service
We build on Google Cloud Platform with the same infrastructure as enterprise brands, but with the responsiveness of a small team.
End-to-End Data Ownership
Everything we build, you own. No vendor lock-in, no proprietary platforms, no recurring license traps.
70+ Successful Implementations
From DTC Shopify brands to $50M enterprise advertisers — proven results across industries and scales.
How It Works
A straightforward process from audit to implementation to results.
Free Audit Call
We review your current tracking setup and identify what's broken, missing, or underperforming.
Custom Proposal
Fixed-price quote with clear scope, timeline, and expected results. No surprises.
Implementation
We build and deploy your tracking infrastructure. You get regular updates and full transparency.
Validation & Handoff
Thorough QA, documentation, and knowledge transfer. Your tracking runs perfectly, with ongoing support available.
Google Tag Manager Specialist FAQ
Stop Losing Conversions to Broken Tracking
Book a free 15-minute audit. We'll show you what's broken, what's missing, and exactly how to fix it — no sales pressure, just engineering expertise.