Work with me

Four ways to engage.
From a single book to a Fractional seat.

Every engagement is scoped, priced, and bounded up front. Fixed scope, fixed fee. The Diagnostic is the entry point for most engagements — but the books and a paid masterclass are real entry points too. Start with whatever fits.

Top of funnel

Keynote & Masterclass

Conference keynotes and in-house masterclasses on a sharply defined DG or MDM theme drawn from the books.

Format60-min keynote · ½-day or full-day masterclass · in person or virtual
AudienceExecutives, data leadership teams, transformation programmes
ConditionsContact me for detailed scope and conditions
Enquire about a date →

He introduced me into the world of data and showed me how the use of data could transform the way we work in marketing, commercial and compliance. Silvia Gutierrez Ferreras · Customer Engagement Lead, Johnson & Johnson

Build & raise the bar

Acceleration Sprint

An 8–12 week expert-led sprint to stand up a specific capability and lift it from baseline to enterprise-grade — DG operating model, MDM target architecture, S/4 data migration plan, or DQ baseline programme.

Format8–12 weeks · Harro on point as expert lead, 1–2 days/week · client provides programme manager and SMEs
OutcomeA working capability your team owns — and the trajectory to keep raising the bar after I leave
ConditionsContact me for detailed scope and conditions
Discuss scope →

We worked intensively with Harro to develop a company-wide data excellence framework. He brought profound know-how and helped our organisation excel in data. Nils Arwed Engelke · CIO, ista SE

Ongoing access · capped capacity

Executive Retainer & Fractional CDO

Two ways to keep me close to the work after a Diagnostic or Sprint. Both are capped — three to five Retainers and exactly one Fractional seat at a time.

RetainerTwo scheduled 90-min calls a month · async access · one quarterly half-day · 6–12 months
Fractional1–2 days/week · 6–9 months · I hold the seat — never delegated · capped at one engagement at a time
ConditionsContact me for detailed scope and conditions
Check availability →

Strategic perspective and leadership skills with impressive depth of knowledge and hands-on skill. An action-oriented leader, clearly passionate about his work. Joe Kosta · Global Data Strategy & Governance, J&J MedTech

How I work, in short

  • Outside the RFP process. When procurement owns the buying, I'm probably not the right fit — but I'm happy to recommend a colleague who fits there well.
  • Fixed scope, fixed fee. Every engagement is bounded up front — you always know what you're getting.
  • Books before small engagements. When the scope wouldn't justify a Diagnostic, the books or a paid masterclass give you the working framework without the engagement overhead.
  • Deep focus, not divided attention. Each client is capped at two days a week — by design. Quality of attention beats calendar coverage.
Common questions

Six things people
often ask before booking

Why don't you publish a day rate?

Day rates anchor the conversation on effort. My engagements are anchored on outcomes — a diagnosis, a stood-up capability, an executive readout. Inside an engagement, I price by scope; day rates exist for my internal pricing model only.

Why won't you respond to RFPs?

RFPs are designed to commoditise the response. The work I do — independent expert judgment, recommendations the executive sponsor can act on — does not survive the procurement filter intact. If your organisation can only buy through procurement, I'm not the right fit, and I'm happy to recommend someone who is.

What does a Diagnostic actually produce?

A 30–40 page report, a 2-hour executive readout, a prioritised 90-day action list, and a written recommendation on whether and how to engage me (or anyone) on follow-on work. The deliverables are the same on every Diagnostic; the content is specific to your programme.

Can you take on more than one Fractional CDO engagement?

No. The capacity cap is one Fractional seat at a time, between six and nine months. After that the engagement either closes out cleanly or graduates into a Retainer.

Do you work outside Switzerland?

Yes — most engagements are across Europe, with the network and S/4HANA migration wave concentrated in Benelux and DACH. Keynotes happen anywhere, and I make exceptions for prior clients whose programmes have moved geographies.

What's the smallest piece of work you'll take on?

A paid masterclass. Below that, the books are the right starting point — they cover the same working framework without the engagement overhead, and I'm happy to point you to whichever volume fits what you're working on.

Get in Touch

Tell me what you're
working on, in a few sentences

Office

Harro Wiersma Smart Consulting
Bleriot-Allee 4
CH-8152 Glattpark Opfikon
Switzerland
WhatsApp Conversation

Lighter budgets are very welcome — the books or a paid masterclass might be the right starting point, and I'm happy to point you to either.