Marketing engineering · Gräfelfing near Munich
Make marketing decisions with data you trust.
We build your data and tracking architecture. Our audit reviews tracking, consent and reporting, explains discrepancies and prioritizes what to fix.
Reply within 48 h · report in 3 working days · from €1,490 net
Example · 3 sources
Fictional example, one month of e-commerce · no live data
- 70+ setups across DACH
- Senior-led team of three
- Marketing engineering since 2019 · GmbH since 2024
From a client engagement · anonymized
Cleaner tracking. Clearer attribution.
Server-side tracking via stape.io, gclid restore, cleaned-up GTM setup.
30 % → 5 %
Direct traffic share in reporting
How was this measured?
Around 30 % of all sessions arrived as (direct)/(none). 2025.
Share of sessions with source (direct)/(none) against all sessions in the web analytics reporting, before and after the migration.
The figure describes session attribution, not revenue. Genuine direct entries and bot traffic remain inside the residual share.
Start here
What you get from an Audit Sprint
One website, one GA4 property, one web GTM container, one CMP, one ads account and up to three conversion paths.
- Findings with severity and explanations
- An implementation roadmap with effort estimates
- A 45-minute walkthrough with your team
€1,490 net
3 working days · fixed price for the agreed scope
Request an Audit SprintFrom the agreed start with complete access and documents. Scope and delivery date are agreed before commissioning. Implementation is separate, with no follow-up obligation.
Larger setups: Audit Sprint Plus from €2,900 net · 5–7 working days
See how the audit worksOur services
Five services. One reliable setup.
From tracking to AI readiness: find the right starting point for your data.
Measurement & Privacy Engineering
Server-side tracking with verified data flows and consent rules.
Your starting point
Ads reports fewer conversions than your shop or CRM actually sees.
Revenue Intelligence & Executive BI
One source across marketing, CRM, and backend. True CAC, real LTV.
Your starting point
Meta, HubSpot, and Stripe report three different acquisition costs.
Experimentation & Conversion Intelligence
Edge-based. Statistically significant. Without client-side flicker.
Your starting point
Client-side tests flicker and drag down the Core Web Vitals.
Data Platform & Governance
Your Marketing Data Lakehouse plus governance, on BigQuery/Snowflake instead of expensive all-in-one CDPs.
Your starting point
Shop, ad systems, and CRM show three different revenue numbers.
AI Strategy & Data Readiness
From EU AI Act to custom LLMs: your data infrastructure for the AI era.
Your starting point
Smart Bidding, Advantage+, or HubSpot AI run without use-case documentation.
For full-cycle scopes we build together with our engineering partner Saloid, a brand of the same GmbH: the same senior people, one contract, one sign-off.
Compare scopesHow the Audit Sprint runs
3 working days to a clear implementation plan.
We agree on access, scope and timing with you before the audit begins.
Day 1
Review your setup
We review up to three agreed conversion paths on one website, covering GA4, web GTM, consent and one ads account.
Day 2
Reproduce the issues
We reproduce measurement errors and reconcile samples from existing reports or exports. Critical findings are shared immediately.
Day 3
Receive your action plan
You receive evidence, priorities and effort estimates. We arrange a convenient time for your 45-minute review.
from €1,490 net · fixed price depending on scope
Audit Sprint: €1,490 net, report in 3 working days. One website, one GA4 property, one web GTM container, one CMP, one ads account and up to three conversion paths. Evidence, action plan and a 45-minute review. From the agreed start with complete access and documents. Scope and delivery date are agreed before commissioning. Implementation is separate, with no follow-up obligation. Audit Sprint Plus: from €2,900 net, report in 5–7 working days. One brand, up to two domains and GA4 properties, one web and one server GTM container, one CMP, two ads platforms and five conversion paths; one existing shop or CRM export. Evidence, action plan and a 60-minute review. From the agreed start with complete access and documents. Scope and delivery date are agreed before commissioning. Implementation is separate, with no follow-up obligation.
Yes. This website sets no cookies and runs on our own EU server. Client projects are EU-first: EU servers, EU tools, EU contracts. US tools only with a DPA and SCCs, when the business question demands them.
Read-only is enough: GA4 as Analyst, GTM read access, consent tool read access, optionally Google Ads and BigQuery if an export is active. No admin rights, no production credentials.
Our focus is tracking, data architecture and reporting. For creative production, media buying and campaign operations, we recommend specialist partners.
No. On the paid side we are the data foundation your agency builds on, not its competitor. And if your in-house team is in place and the volume justifies it, in-house is almost always better. We build the foundation underneath and hand it over.
Who works here
The person who sells it, builds it.
You work directly with the people who plan and implement your setup. Ownership and handover are clear from the start.
Free checks · no login
Check your setup before you talk to us.
Tracking Check
Check your website for technical tracking and consent issues. The scan examines public signals, without access to your ad accounts.
No login. The domain and findings are stored in the EU for 7 days to provide a shareable report.
39 checks across 6 modules
- Consent Mode V2
- Cookies & scripts before / after consent
- Tracking core
- Product & price data
- Script inventory & performance
- Security & bots
Consent Loss Calculator
What your consent rate costs in conversions, in euros per year.
Open the tool →EU AI Act Quick-Check
Five questions to the risk class of your AI use case, duties included.
Open the tool →GDPR Stack Calculator
Which analytics tool fits: Plausible, Piwik PRO, Matomo or GA4.
Open the tool →All resources
Checks, methodology and blog articles in one place.
Overview →Our method
The Data Contract Model.
A shared agreement between marketing, engineering and reporting: what does a number mean, how is it validated and who owns changes?
Build · Establish the foundation
A one-off project with an agreed scope.
Define decisions
Which questions must your data answer? We agree on KPIs, sources and counting rules.
Deliverable: measurement blueprint
Specify the contract
Event names, required fields, consent rules and owners are documented and versioned.
Deliverable: testable data specification
Implement & validate
We connect systems, test data flows and reconcile results with the sources.
Deliverable: tested setup and handover
Operate · Maintain quality
Available as a separate, ongoing engagement.
Monitor quality
Checks for completeness, freshness and discrepancies make issues visible early.
Trust · Validation & monitoring
Manage changes
Data owners, approvals and documented versions define who can change what.
Governance · Ownership & approval
Evolve deliberately
New channels, events and use cases extend the contract with the appropriate tests.
Evolution · Extensions & migration
What this looks like in practice
One purchase. One definition.
A simplified example contract for a purchase event. Actual rules are agreed for your setup.
purchase · v1.0- Definition
- A purchase is counted after payment is confirmed in the backend.
- Required fields
- transaction_id · value · currency
- Quality checks
- Unique order ID, numeric value and valid currency.
- Consent & destinations
- Each destination follows its documented consent rule.
- Ownership
- The data owner reviews and approves schema changes.
Architecture audit
In 3 working days you know which numbers you get to keep.
We audit tracking, consent, data quality and reporting, and tell you which decisions your existing data can carry and which it cannot.
3 working days
from kickoff to roadmap
5 layers
tracking, consent, data quality, reporting, stack
from €1,490
net, fixed price, no follow-up obligation