GA4 implementation. Reliable conversion and campaign data - not "we have some data", but we know what works and why.

Google Analytics 4 Implementation End-to-end consulting and implementation

I implement GA4 with GTM Server-Side, BigQuery and Looker Studio - built for your goals, not a template

GA4 conversions don't match CRM. E-commerce tracks only page_view. Ad-blockers cut 20–40% of traffic and Consent Mode isn't configured. Default GA4 setup captures a fraction of the data you need - professional implementation is the difference between "we have some data" and "we know exactly what works and why". I run the full process from Measurement Plan to production with QA testing.

Book a consultation Check GA4 - auditor

Does this sound familiar?

GA4 conversions ≠ CRM or shop data

Number mismatches make it impossible to allocate marketing budget reliably.

Ad-blockers cut traffic

Client-side GTM easily blocked - no server-side and first-party cookies.

No Consent Mode v2

GDPR risk and lost modeled data - cookie banner doesn't work with GA4.

UA → GA4 migration "done", data broken

Historical comparisons impossible, events not migrated, empty reports.

BigQuery disabled or unused

No raw data - advanced analysis and historical audit impossible.

E-commerce tracks only page_view

Missing view_item, add_to_cart, purchase - funnels and ROAS based on incomplete data.

How implementation works - 4 steps

  1. 01

    Discovery and Measurement Plan

    Business goals, event and conversion mapping, ROI prioritization. Audit of current state (if any).

    Deliverable: Measurement Plan + event specification
  2. 02

    GTM implementation

    GA4 property, data streams, custom events, e-commerce (GA4 schema), GTM client-side + server-side tagging.

    Deliverable: GTM container + server-side + debug tests
  3. 03

    BigQuery and Consent Mode

    Raw GA4 export, schemas, retention, cost optimization. Consent Mode v2 and CMP integration.

    Deliverable: BigQuery link + Consent Mode v2
  4. 04

    Reports, QA and handover

    Looker Studio (acquisition, conversions, e-commerce), end-to-end tests, documentation and team training.

    Deliverable: dashboards + documentation + training

Offer - what you get

GA4 property and events

Property setup, data streams, custom dimensions/metrics, conversions and user properties for your business.

Custom events Conversions Dimensions

GTM Server-Side

Server-side tagging, first-party cookies, ad-blocker resilience, event routing to GA4 and other platforms.

sGTM First-party Ad-blockers

E-commerce tracking

Full GA4 funnel: view_item, add_to_cart, begin_checkout, purchase - with correct parameters and validation.

Purchase Enhanced ecommerce Item data

BigQuery and Consent Mode v2

Raw data export, schemas, retention, cost optimization. Full GDPR compliance.

BigQuery Consent Mode GDPR

Looker Studio

Management reports: acquisition, conversions, e-commerce, campaigns - ready for daily use.

Acquisition E-commerce Campaigns

QA, documentation, training

End-to-end tests (Tag Assistant, DebugView), technical documentation and team training on maintenance.

QA Documentation Training
  • Who it's for: ecommerce, lead gen, SaaS and content sites - companies that need reliable data for marketing budgets and investment decisions.
  • Model: one-time implementation (4–8 weeks depending on complexity); optional analytics retainer for maintenance, monitoring and growth.
  • Outcome: complete, tested GA4 + GTM + BigQuery stack, cookieless-ready and auditable data from day one.

Free tools - start on your own

Before booking a consultation, check your current GA4 setup or prepare an event specification.

GA4 Auditor

Check your GA4 implementation - configuration, events, e-commerce and common mistakes.

Run auditor

dataLayer Generator

Generate correct GA4 e-commerce dataLayer code - ready to paste into GTM.

Generate dataLayer

GA4 Encyclopedia

Complete GA4 guide: events, parameters, reports, BigQuery and common implementation pitfalls.

Read encyclopedia
Krzysztof Surowiecki

Krzysztof Surowiecki. For over 20 years I've implemented web analytics - from Universal Analytics through GA4 migrations to GTM Server-Side, BigQuery and Looker Studio. I know typical e-commerce and lead gen pitfalls: missing events, CRM mismatches, ad-blockers cutting data.

  • End-to-end: Measurement Plan → GTM (client + server) → BigQuery → reports - single point of contact.
  • E-commerce, lead gen and SaaS - implementation built for your business goals, not a Google template.
  • Consent Mode v2 and GDPR by default - no trade-off between compliance and data quality.

Trust - why clients choose me for analytics

20+years experience
150+projects
50+clients
7expert tools
  • Single point of contact: I don't hand off your project between teams - you work directly with me.
  • Consulting approach: Measurement Plan and priorities before code - deployment with QA testing and documentation.
  • Confidentiality and security: NDA and working standards suited to data-sensitive organizations.

Contact - let's take the first step

Tell me about your site, tech stack and data problems (mismatches, missing events, migration). In a consultation I'll propose GA4 scope, timeline and pricing.

  • Discussion of platform (Shopify, WooCommerce, custom), goals and current analytics state.
  • Scope recommendation: GTM client/server, e-commerce, BigQuery, Consent Mode.
  • Timeline, engagement model and cost proposal.
Book a consultation GA4 auditor first