Data Engineering

Your data lives in 7+ different places.
Your decisions live in Excel.

Marketing data warehouse. Product events. Customer interactions. Finance. You have it all. But fragmented across tools, vendors, and definitions. Insights take weeks. Decisions take guesswork. We build a single source of truth so your data becomes the backbone of your business.

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Solving Data Fragmentation

Google Ads says one thing, Facebook says another different attribution models, different data delays.

One unified data warehouse. One source of truth. One metric definition across the entire company.

Email platform reports 10K conversions, CRM reports 7K nobody knows which is right.

Real-time dashboards. Marketing sees ROAS within minutes, not days.

Marketing team waits 3 days for reports. By then the campaign is already over.

Data scientists get clean, standardized data. They build models instead of plumbing.

Data scientists can’t work they’re waiting for clean data. Analytics teams can’t scale they’re drowning in ETL.

Vendor API breaks? We swap it out. Your warehouse stays intact. No downtime, no pain.

Vendor changes their API? Your entire reporting breaks. You’re at their mercy.

Everything is in your cloud. You own it completely. Zero dependency on us or anyone else.

Our approach: cloud agnostic, modern stack, zero dependencies

We work with tools like BigQuery, Snowflake, Databricks, whatever fits your strategy.
But we always follow the same playbook: clean architecture, open standards, and total ownership for you.

Medallion architecture

Bronze (raw), Silver (clean), Gold (business logic). Clean separation of concerns. Your analysts and scientists work on clean data. Your engineers own the transformation layers.

DBT + Dataform for transformation

Version-controlled SQL. Data lineage built-in. Tests run automatically. Your team can review changes before they touch production.

Terraform + CI/CD pipelines

Infrastructure as code. Every change is tracked, tested, reviewable. You can roll back. You can audit. You can hire someone new and they understand everything.

How we work together

Phase 1: Discovery & Design

We audit your current data landscape. Where’s your data? What’s broken? What’s the business outcome you need? Then we design together: data model, transformation logic, dashboards. Your team is in every decision.

Phase 2: Build & Collaborate

We build the warehouse, integrations, and transformations. Your team watches, learns, contributes. Code reviews, weekly syncs, full transparency. You’re learning the stack as we build it.

Phase 3: Handoff & Empower

Training. Documentation. Playbooks. Your team now owns the warehouse, can extend it, can maintain it independently. We stay available for strategy and complex problems. You’re empowered.

Ongoing: Partnership

As your business evolves, so does your data infrastructure. We stay involved: quarterly strategy sessions, model optimization, new integrations. Your success is our success.

What we build

Marketing data warehouse

Google Ads, Meta, LinkedIn, email platforms, CRM, web analytics, and customer data, unified into one schema with one metric definition. Real-time ROAS reporting. Attribution that actually makes sense.

First-party CDP

Build customer segments based on your own data. Push audiences to ad platforms, email, CRM. No vendor lock-in. Your segments. Your rules. Your data.

API integrations

Custom connectors for your unique data sources. Shopify, Klaviyo, HubSpot, and your internal APIs, everything flows into the warehouse without manual work.

Reverse ETL

Insights flow back to where they matter: CRM records enriched, email audiences updated, ad platform conversions synced. Real-time decisioning built on clean data.

Real-time dashboarding

Insights within minutes, not days. Looker, Tableau, or custom dashboards. Your team makes decisions on current data, not stale reports.

Data science ready

Propensity models. Churn prediction. Lifetime value. Your data scientists work with clean, well-documented data. They build models. We handle the data plumbing.

Why Relevant Online

Partnership, not vendor lock-in

We build everything in your cloud environment using industry standards (Terraform, dbt, CI/CD). No black boxes. No proprietary tools. Your team can maintain it, extend it, or hire someone else if needed. You’re never trapped.

Full-service, not point solutions

Tracking → Data Engineering → Transformation → Analysis → Reporting → Data Science. We work end-to-end, so your data flows seamlessly from collection to insight. No coordination headaches between vendors.

Hands-on partnership

We sit with your team, not apart from it. Your data engineers learn from us. Your analysts understand the transformations. Knowledge transfers continuously. You build capability, not dependency.

Proven at scale

We’ve built data warehouses for enterprise retailers, e-commerce, SaaS. Hundreds of data models. Billions of events. Clients like Maxeda trust us for their core data infrastructure. We know what breaks at scale and how to fix it.

Ready to own your data?

Let’s talk about your data gaps, your infrastructure goals, and how we build this together.

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Feiko Bierman
Strategy Lead
feiko@relevantonline.eu
Phone: 085 747 0029