Dennis Heijnen, data analyst

Dennis Heijnen

 Let's talk
For medium sized companies that are done guessing

Your data already has the answer. I help you find it.

Most companies have plenty of data but still decide on gut feel. Because nobody has time to turn numbers into answers.

I build the three things that fix that: dashboards, automations, and analyses your team actually uses.

Let's talk See what I offer ↓

A quick intro

What I offer

Ad-hoc

Clear Answer

For: teams stuck on a decision they can't make with confidence.

Walk into your next leadership meeting with a defensible answer.

  • A scoping call to pin down the exact decision you're trying to make
  • Full analysis of your existing data, no new tooling required
  • A short recommendation memo: what the data shows, what it doesn't, and what I'd do in your position
  • A 30-minute walkthrough, so you know exactly what to do
Timeframe 10 business days from scoping call to memo
Guarantee If the memo doesn't give you a clear enough answer to act on, I keep working the data until it does. No extra cost.
Price From €750

Automations

Hours Back

For: teams still building the same report by hand every week.

Get the hours back, permanently, without inheriting a system nobody but you can maintain.

  • Mapping your current manual process, start to finish
  • A built, tested automation that replaces it
  • Documentation your team can actually follow, not just me
  • One round of adjustment after go-live, once you've used it for real
Timeframe 3 weeks build time
Guarantee If your team isn't using it in place of the manual process within 30 days, I fix what's blocking adoption. No extra cost.
Price From €1,500

Dashboards

One Place

For: teams that already have a dashboard that nobody checks.

A dashboard your team opens on its own, not one you have to remind them to look at.

  • Interviews with 2–3 actual daily users before any building starts
  • A dashboard built around how those people already work, not around what the data allows
  • One structured revision pass after the first two weeks of real use
  • A rollout plan so it doesn't launch to silence
Timeframe 6 weeks build time
Guarantee If usage hasn't hit an agreed check-in point after 30 days, I rework what isn't landing. No extra cost.
Price From €4,500

What people say

Brings structure and clarity to everything he does — organizing complex information, building scalable solutions, and translating it into insights teams can actually use.

Omega Obermiller

Combines domain knowledge, a strong data analytics skillset, and communication skills that make him a perfect addition to any team.

Stefan Masnikovic

No matter how technical or niche the question, he always made time to thoughtfully engage and offer insightful answers.

Emery Karambiri

One of the most consistent, driven, and creative data professionals I've worked with — he finds solutions faster because he thinks outside the box.

Shreya Deshmukh

Why this is different

Two things tend to show up separately: people who understand the data, and people who understand why teams do or don't use it. I've spent time on both.

Data Analytics

Five years of hands-on data analytics experience in different industries. Including cutting a core reporting process from three hours to fifteen minutes, and contributing to a 10% resource allocation improvement through dashboarding.

Psychology & Technology

A background in Human-Technology Interaction (TU Eindhoven). The study of why people trust, adopt, or abandon the technology built for them.

"Most providers stop once the numbers are correct. I keep going until your team actually trusts them."

If decisions in your team still come down to gut feel instead of data,
this is the kind of problem I work on.

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