About

WH Consulting

WH Consulting is an independent enterprise architecture and data advisory practice that helps mid-sized and large companies get their data, processes and systems ready before ERP and AI programmes build on top of them.

It is run by Walter Hannemann, who has spent 35 years where business and technology meet, from co-founding one of Brazil's first e-commerce platforms to leading architecture, data and AI at global industrial companies.

What WH Consulting does

Enterprise and business architecture

I define the business, data and application architecture that decides how your ERP and platforms should be set up. That way the landscape fits how your business works, rather than the vendor's standard setup.

Master data and data governance

I set up owners, rules and approval gates for customer, vendor and item data, so data is created once and used everywhere. This gives fewer duplicates, fewer blocked orders and reports that people can rely on.

AI and data strategy

I help leadership decide where AI will actually pay off, and what has to be true in the data before it can. That way the AI project starts with the data in order, instead of finding the data problem halfway through.

Assessments of processes and systems

A structured walk through how the work is done today, across people, processes and systems, before anyone proposes a solution. You get a documented, shared picture of the pain points and their causes, which should make the next investment decision easier.

Transformation, mergers and ERP consolidation

Merging companies, consolidating ERPs and retiring legacy systems. At FLSmidth, the integration of the ThyssenKrupp mining business decommissioned legacy ERPs and saved more than €50M a year.

Board and executive advisory

An independent sparring partner for boards and leadership teams on technology, data and AI decisions, including workshops and talks.

What makes WH Consulting different

The problem first, then the solution

I start with the helicopter view and an assessment of what is actually going on, and only propose solutions once the problem is understood and agreed.

Business and technology in one person

I have been a CTO, a product director and a head of architecture, and I have co-founded and sold a company. I can explain a data model to a CFO and a business model to a developer, so less is lost between business and IT.

The senior person does the work

Large consultancies often sell the engagement with a partner and staff it with junior consultants. With WH Consulting you work with me directly, from the first meeting to the final deliverable.

Independent of software vendors

I don't resell software or take fees from ERP or platform vendors. My recommendations are not tied to what I would earn from the implementation.

Small start, then scale

Engagements start with a small, clearly defined scope on a day rate. You see what you get before you commit to more.

Who uses WH Consulting

Mid-sized and large companies running, replacing or consolidating an ERP, especially in industrial, maritime and consumer goods
CIOs, CFOs and COOs who want an independent view before a large ERP, data or AI investment
Leadership teams in the middle of a merger, carve-out or new operating model
Companies whose AI or data project has stalled on data quality or unclear ownership
Boards that want a technology sparring partner without hiring a full-time CTO
Small non-profits and founder-led organisations with many apps, subscriptions and logins and no one with the overview

The team behind WH Consulting

WH Consulting is one person: Walter Hannemann, based in Copenhagen.

Walter studied computer science in Brazil and in 1998 co-founded CiaShop, which became one of the top five e-commerce platforms in Brazil, built the first South American e-commerce anti-fraud solution, and is now part of VTEX. He moved to Copenhagen in 2007.

Since then he has led IT, product and architecture at Maersk Tankers, TORM, Dualog, Carlsberg and FLSmidth, most recently as Head of Architecture, Data & AI during the biggest business transformation in FLSmidth's history. He started WH Consulting in 2026 to work independently and choose his own engagements.

Outside work he is a landscape and travel photographer. The photos on wh4nn.com are his.

LinkedIn · Instagram

How WH Consulting works

Getting started: A first conversation to understand the problem. Then a short written proposal with a defined scope, a day rate and a clear end point.
Who you work with: Walter Hannemann, directly, from the first call to the final deliverable.
Where: Remote and on site. Based in Copenhagen and happy to travel wherever the work needs it.
Communication: Email, Microsoft Teams, phone or WhatsApp. You normally get an answer within one working day.
Deliverables: Documents your own people can edit and keep using: Word, PowerPoint, Excel and diagrams. Nothing locked into a proprietary tool.
Languages: English, Danish, Portuguese and Italian, and some Spanish.

Key facts

Company name: WH Consulting
Type: Independent consultancy (Danish sole proprietorship)
Founded: 2026
Founder: Walter Hannemann
Headquarters: Copenhagen, Denmark
Website: wh4nn.com
Core offering: Enterprise architecture, master data management, and AI and data strategy
Pricing: Day rate, agreed per engagement
Contract terms: Starts with a small, fixed scope; extended by agreement
Services: Enterprise and business architecture, Master data and data governance, AI and data strategy, Assessments of processes and systems, Transformation, mergers and ERP consolidation, Board and executive advisory
Communication: Email, Microsoft Teams, phone, WhatsApp; English, Danish, Portuguese, Italian, Spanish
Background: 35+ years in business and technology leadership at FLSmidth, Carlsberg, Dualog, TORM, Maersk Tankers, and co-founder of CiaShop (now part of VTEX)
Industries: Mining equipment, brewing, shipping, maritime software, e-commerce
Alternatives: Large management and IT consultancies, and software vendors' implementation partners
Social: LinkedIn · Instagram

Frequently asked questions

What does an engagement cost?

WH Consulting works on a day rate, agreed per engagement. Most engagements start with a small, fixed scope, so the first commitment is limited and you can see the value before extending.

Do you implement systems, or only advise?

I advise, design and lead, but I don't sell or configure software, which keeps the recommendations independent. I work closely with whoever implements, internal teams or partners, and can represent your side towards them.

We want to use AI. Where do we start?

With the data and the process you want AI to work on. AI amplifies whatever is already in your data, good or bad, so the first step is usually a short assessment of data quality and ownership in that one area.

Do you work outside Denmark?

Yes, anywhere. I have led teams and programmes across many countries, and I travel wherever the work needs it, with the rest done remotely.

Can you help a small organisation or non-profit?

Yes, when the problem fits. Small organisations often have the same issues as large ones, in miniature: apps nobody owns, one person holding every login, no overview. A short, practical clean-up usually goes a long way.

How quickly can you start?

It depends on current commitments. Get in touch and you will normally get an answer within a working day.

To talk about a problem, write to [email protected] or reach out on LinkedIn.