What WHI does

WHI Walter Häusermann Informatik is a Swiss IT consultancy headquartered in Jona, Switzerland, that specializes in custom SAP R/3 development and system adaptation services. Founded in 2004 and operated by Managing Director Walter Häusermann as a founder-owned sole proprietorship, the firm positions itself as a small, family-oriented boutique serving enterprise customers that require bespoke SAP R/3 customizations beyond standard functionality. The company works exclusively within the SAP R/3 ecosystem, with no documented expansion into S/4HANA, cloud platforms, or adjacent enterprise software.

WHI's technical service portfolio comprises three pillars: custom ABAP programming (covering USER-Exits, BADI, BAPI, RFC, BTE, and the Enhancement Framework), form design using SAP-Script and SMART-Forms, and authorization concept development using the Profile Generator. These are delivered as individualized, project-based consulting engagements rather than as packaged, licensable software products. The company advertises 20 years of accumulated industry experience, suggesting the founding team brought prior SAP R/3 development expertise from earlier roles rather than starting from scratch in 2004.

The firm's commercial model is project-based with no publicly disclosed pricing, packaged offerings, or standardized rate cards. Engagement is direct between the firm and enterprise clients, with no documented channel partnerships, marketing operations, or sales infrastructure beyond its website, contact form, and direct phone/email reach. WHI has no external funding, no parent entity, and no disclosed growth investments. Visible enterprise customer references include Belimo Automation, RUAG Space, Micarna, Walter Meier, Bucher-Guyer Municipal, SCANA Lebensmittel, Novartis Pharma, Siemens Schweiz, and MIBAG Property + Facility Management, spanning industrial automation, aerospace, food production, climate control, pharmaceuticals, and facility management. No recent strategic transactions such as funding rounds, acquisitions, partnerships, geographic expansions, or new product launches have been documented in the available data.

Name

WHI

Legal name

WHI Walter Häusermann Informatik

Website

https://whi-informatik.ch

Company type

Private

Founded year

2004

Operating status

Operating

Headcount range

1–10 employees

Short description

WHI Walter Häusermann Informatik is a small Swiss SAP R/3 consultancy providing custom ABAP development, form design, and authorization concept services to enterprise clients across Switzerland through direct, project-based consulting engagements.

Ownership category

akta.pro rank

Headquarters

HQ city

Jona

HQ country

Switzerland

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations, Technology or R&D, Marketing or Sales, Others

Revenue model

1. SAP Custom Development Services: Custom ABAP development and SAP system adaptation services, likely project-based consulting engagements for enterprise clients requiring bespoke SAP solutions.

Go-to-market motion1 record

Distribution channels1 record

Core offering

WHI provides custom SAP R/3 development and system adaptation services for enterprise customers, covering ABAP programming (USER-Exits, BADI, BAPI, RFC, BTE, and Enhancement Framework implementations), SAP form design (SAP-Script and SMART-Forms), and authorization concepts using the Profile Generator (Profilgenerator). Each engagement is delivered as a tailored, project-based solution designed to fit the customer's specific SAP application requirements.

Product overview

WHI is an SAP consulting firm specializing in custom SAP R/3 development and system customization. The company provides a portfolio of services including ABAP programming (covering USER-Exits, BADI, BAPI, RFC, BTE, and Enhancements), SAP form design (SAP-Script and SMART-Forms), and authorization concept development using the Profile Generator. These services are offered as individualized solutions tailored to each customer's specific SAP application needs rather than as packaged software products.

Differentiator

Problem solved

Functional benefit

Products and services

• SAP ABAP Programming Services Custom ABAP programming services for SAP R/3 systems, including USER-Exits, BADI, BAPI, RFC, BTE, and Enhancement Framework implementations tailored to each customer's specific application needs.
• SAP Form Design Services Creation and customization of SAP forms and document output using SAP-Script and SMART-Forms technologies for enterprise SAP environments.
• SAP Authorization Concept Services Development and implementation of SAP authorization concepts using the Profile Generator (Profilgenerator) to manage user roles and access controls in SAP R/3 systems.

Named customers9 records

Segments1 record

Ideal customer profiles1 record

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature3 records

Scale indicators1 record

Direct peers

• All for One Group: Mid-sized German-headquartered SAP consultancy focused on ERP implementation, custom development, and managed services for SME and mid-market enterprise customers. Directly comparable in service mix to WHI's ABAP customisation offering, though at much greater scale and geographic reach.
• SNP Schneider-Neureither & Partner: Heidelberg-headquartered consultancy specialised in SAP data transformation and selective S/4HANA migration, frequently working with legacy R/3 customisations. Comparable to WHI in its deep focus on SAP technical artefacts, though publicly listed and substantially larger.
• msg systems: German independent IT consultancy with a substantial SAP practice covering custom development, S/4HANA migration, and industry-specific ERP solutions. Closely comparable business model to WHI as a SAP-centric services firm, though with thousands of employees and a much broader portfolio.

Broad incumbents

• Atos: Global IT services provider with significant SAP delivery capability across Europe, including custom development and S/4HANA programmes. Comparable in that it serves enterprise SAP customers in Switzerland, though Atos is a broad incumbent across many technology stacks.
• Accenture: World's largest SAP delivery partner with deep capabilities in custom development, S/4HANA, and industry solutions. Overlaps with WHI's enterprise SAP customisation services for large Swiss industrial and pharma clients, but as a global broad incumbent.
• Capgemini: Global IT services giant with one of the largest SAP practices worldwide, including custom ABAP development, S/4HANA migration, and managed application services. Overlaps with WHI on enterprise SAP customisation, but as part of a vast multi-vendor portfolio.
• Deloitte: Big Four professional services firm with a large SAP practice spanning strategy, implementation, custom development, and managed services. Comparable to WHI in serving enterprise SAP customers in Switzerland (including pharma and industrials), but as a broad incumbent.
• Tata Consultancy Services (TCS): Global IT services major with a large SAP practice covering ABAP development, AMS, and S/4HANA migration. Compares to WHI on enterprise SAP customisation and ongoing maintenance, but as a broad global incumbent with delivery centres in multiple geographies.
• NTT Data Business Solutions: Global SAP-focused IT services subsidiary of NTT Data, formed from the merger of itelligence and SAP consultancy assets. Overlaps with WHI on ABAP custom development and SAP R/3/S/4HANA services, but operates as a broad incumbent serving global enterprises rather than a Swiss boutique.

Regional players

• Swisscom: Switzerland's incumbent telecommunications provider with an enterprise IT services arm covering SAP hosting, customisation, and integration. Most directly comparable as a Swiss-headquartered enterprise IT services provider working with large Swiss customers, though operating at vastly greater scale across multiple technology domains.

Market position

Strengths4 records

Weaknesses3 records

Competitive moat1 record

Key risks4 records

Key highlights4 records

Customer concentration

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about WHI