Experienced SAP consultants, developers and project managers with over 10 years of industry experience on average.
About
Swiss SAP specialists for service and asset management.
OPUSm is a Swiss consulting and technology company specialising in the digitalisation of service and asset management processes. As an SAP partner we combine deep process knowledge with technical excellence — earning our customers’ trust through proven competence.
Founded in Zug in 2014, we work today with customers in Switzerland, Germany and internationally. Since 2024 we have strengthened our presence in the DACH region with OPUSm Deutschland GmbH in Ratingen.
Our story
Founded on a conviction: service deserves specialists.
OPUSm was founded in Zug in 2014 — on a clear conviction: service processes are too important to digitalise on the side. Instead of covering a bit of everything as a generalist, we focused on one field from day one: service management in the SAP ecosystem.
The first projects in Switzerland grew into international rollouts, individual mandates into long-term partnerships — and recurring customer requirements into products of our own, bundled in the OPUS Extension Suite. In 2024 we opened our second location with OPUSm Deutschland GmbH in Ratingen.
None of that has changed to this day: a team small enough that everyone knows every project — and experienced enough to bring every project safely to its goal.
Milestones
2014
OPUSm AG founded in Zug
2024
OPUSm Deutschland GmbH founded in Ratingen
Today
70+ customers and projects in 12 countries worldwide
Our values
Trust through competence.
We are a specialised team with personal commitment and genuine customer proximity. At OPUSm everyone involved knows the projects — from the CEO to the consultant.
Earn trust — don’t assume it
Respect customers and listen attentively
Do the right thing — and do it right
Stay small, agile and flexible
Build long-term partnerships
Team & organisation
Small enough for closeness, strong enough for any project.
With 14 permanent employees and a network of 15 experienced freelancers, we respond flexibly to any project requirement.
A flexible network of qualified freelancers enables a fast response to projects of any size.
The core team

Ralph Sonderegger
Contact Switzerland

Joachim Hahn
Contact Germany
Careers
Join our team.
We are growing — and happy to meet people who share our passion for excellent service processes. Open positions are published in our Insights; speculative applications are welcome any time.
Services & technology
Depth over breadth — across the entire SAP service ecosystem.
From process consulting to technical implementation: we know the SAP service world and its integration with Microsoft and third-party systems from years of project practice.
Focus areas
- Service process optimisation
- Digital transformation
- Field Service Management
- Asset Management
- Expense Management
SAP technology
- ECC / S/4HANA Service
- Customer Service (CS)
- Plant Maintenance (PM)
- Field Service Management (FSM)
- SAP Asset Manager (SSAM)
- Service Cloud (C4C)
- SAP Business One (B1)
- Integration CPI & non-SAP
MS & further integrations
- Microsoft Teams & Outlook
- SharePoint / DMS
- MS Navision / Dynamics
- HR Campus (expenses)
- Abacus, APplus
- SightCall (video remote)
OPUSm Extensions & Apps
Our own products that extend SAP FSM where the standard stops.
OPUSm develops and sells its own products and connector solutions around SAP FSM — bundled in the OPUS Extension Suite.
Industry experience
Proven project experience — across industries.
- Manufacturing & industry
- Utilities
- Testing & regulatory services
- Energy, oil & gas
- High-tech & instruments
- Healthcare / social services
- Facility management
Reference customers (selection)
Locations
Present where our customers are.
Headquarters
OPUSm AG
Founded in Zug in 2014 — at home in Technopark Zürich today.
Germany office
OPUSm Deutschland GmbH
Founded in 2024 — for optimal customer proximity in the DACH region.
Get in touch.
We will show you how OPUSm turns your digitalisation goals into reality.
