Piotr Litwa
Your GTM & Analytics — always working. Always accurate.
I monitor Google Tag Manager and GA4 for businesses across Europe — so your marketing data is always reliable, your agency is always accountable, and you never make decisions based on broken tracking.
CEO & founder
Analytics Expert · Your Partner in Data & Tracking
Businesses Served
Countries
Years Experience
h Issue Resolution
Services
What I do — four focused services
GTM Monitoring & Config
Weekly health checks of your GTM container — tags, triggers, consent mode, data layer. Issues fixed within 48h.
Learn moreGA4 Monitoring & Config
Monthly verification of your GA4 data accuracy — conversion goals, custom events, attribution settings.
Learn moreAgency Audit & Oversight
Independent monthly review of your agency's work — tracking, budget efficiency, attribution. No conflict of interest.
Learn moreCustom Development
GTM server-side, BigQuery pipelines, custom tags, cookieless tracking. Bespoke solutions for complex needs.
Learn moreHow NOT to set up GTM — and what actually works
My talk at WordCamp Poland 2024 about the most common GTM mistakes that destroy SEO and tracking accuracy. 30 minutes of practical fixes you can implement today.
Watch the full talkSpecializations
Industries I know best
E-commerce & Retail
Conversion path analysis, shopping cart tracking, customer segmentation, and sales forecasting. I help online stores make data-driven decisions that actually increase revenue.
SaaS & Technology
Product metrics, customer lifetime value, churn analysis, and growth experiments. I support tech companies in understanding their users through reliable tracking.
DIY & Home Improvement
Seasonal trend analysis, inventory optimization, and customer project segmentation. Specialist experience in e-commerce for the building and tools sector.
Testimonials
What clients say
"I've had the pleasure of working with Piotr in the digital space for several years. He has consistently delivered insightful analyses that we successfully implemented in our projects. Analytical thinking, holistic perspective, fast decisions — that's what working with Piotr looks like. Highly recommended."
"Piotr is an excellent data expert — very engaged and proactive. He delivers practical insights, not just information. I really valued working with him during my time managing digital business at Carrefour."
"Piotr is a versatile professional who effectively solves problems across the broad spectrum of digital technology — from analytics to cybersecurity. This holistic approach gives him a strong voice in any IT discussion. A great team player and a great person."
"I recommend Piotr as a valuable resource supporting organizations in data analytics with direct impact at both operational and strategic level. His competencies perfectly align with the principle: 'If you can't measure it, you can't improve it.'"
Pricing
Simple, transparent pricing
GTM Starter
- Weekly GTM health checks
- Tag & trigger monitoring
- Consent Mode v2 compliance
- 1h config changes included
- Monthly written summary
GTM + GA4 Bundle
- Everything in GTM Starter
- Monthly GA4 data accuracy audit
- Conversion goal verification
- Custom dimensions & events check
- 1h GA4 config changes included
Full Monitoring
GTM+GA4: €250 + Agency: 3% of ad spend (min €200)
- Everything in GTM + GA4 Bundle
- Monthly independent agency audit
- Budget efficiency analysis
- Attribution verification
- Written recommendations
FAQ
Frequently asked questions
What exactly do you monitor every month?
For GTM: I check all tags, triggers, variables, data layer integrity, and Consent Mode v2 compliance weekly. For GA4: I verify event accuracy, conversion goals, custom dimensions, and attribution monthly. You get a written summary of everything found and fixed.
Do I need to give you access to my GTM or GA4?
For monitoring I need read-only access to GTM and GA4 — takes about 5 minutes to set up. I'll send you a short onboarding form after you subscribe.
How does the Agency Audit work if I don't share agency access?
You share your ad platform reports (Google Ads, Meta) and I cross-reference them with your GA4 and tracking data independently. No direct agency access needed.
Can I cancel anytime?
Yes — cancel any time directly in your Stripe billing portal. No minimum period, no cancellation fees, no awkward conversations.
Not sure where to start?
Run a free GTM audit — 30 seconds, 10 minutes to results. See exactly what's broken on your site before spending a single euro on a subscription.
Start Free AuditNo signup required · 100% free · No obligations