About us🏢
Intelligent dialog systems
VIER accompanies, supports and automates communication.
This is VIER
The leading technology company in the DACH region with a focus on AI-based communication solutions. We develop and operate innovative inbound and outbound communication solutions for efficient customer service.
With over 200 employees in Hanover, Aachen, Berlin, Karlsruhe and Lucerne, we create sustainable customer service experiences for over 1,000 customers.
VIER was formed in 2021 with the merger of the companies 4COm, Lindenbaum, parlamind, Precire and voiXen. Cognesys was added in 2022. The partnership with VIER iusta has also existed since 2024.
With over 200 employees in Hanover, Aachen, Berlin, Karlsruhe and Lucerne, we create sustainable customer service experiences for over 1,000 customers.
VIER was formed in 2021 with the merger of the companies 4COm, Lindenbaum, parlamind, Precire and voiXen. Cognesys was added in 2022. The partnership with VIER iusta has also existed since 2024.
More than
employees
More than
happy customers
partners
Why VIER
Comprehensively efficient
We make contact-based business processes more efficient and the user experience measurably better. We combine artificial intelligence with human intelligence, experience with intuition.
Comprehensively efficient
We make contact-based business processes more efficient and the user experience measurably better. We combine artificial intelligence with human intelligence, experience with intuition.
Trust in experience
We combine artificial intelligence with human intelligence, expertise with intuition. This is backed by 30 years of experience and the trust of +1,000 companies.
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Maximum security
VIER stands for “designed, made and operated in Germany”. Our company and our products have received multiple awards in various categories for this.
Products
Our AI-supported software solutions
AI solutions for analysis, assistance and automation - for optimal customer dialog, at any time and on any channel.
VIER Speech Impact
VIER Semantic Intelligence
VIER Voice of the Customer
Management
Rainer Holler, CEO
Rainer Holler is CEO of VIER GmbH and is rethinking customer dialog and communication. The business graduate and EMBA wants to set the new European standard for AI-supported customer interaction with the German software company. To achieve this, Rainer Holler attaches great importance to mutual trust, cooperation and transparency. Rainer Holler is a passionate campaigner for the idea of symbiosis between humans and AI and sees the combination of the best capabilities of human and artificial intelligence as the basis for a successful economic future.
Rainer Holler, CEO
Rainer Holler is CEO of VIER GmbH and is rethinking customer dialog and communication. The business graduate and EMBA wants to set the new European standard for AI-supported customer interaction with the German software company. To achieve this, Rainer Holler attaches great importance to mutual trust, cooperation and transparency. Rainer Holler is a passionate campaigner for the idea of symbiosis between humans and AI and sees the combination of the best capabilities of human and artificial intelligence as the basis for a successful economic future.
Carsten Fiegler, Vice President Business Communications
As Vice President of Business Communications, Carsten Fiegler is responsible for the successful expansion of the company's business with intelligent, AI-based contact center solutions. He has been successful in IT and sales for over 20 years.
Before joining VIER, he was Strategic Global Alliances Director at Genesys Cloud Solutions, where he was responsible for GSI partners in Germany. Previous career positions include Oracle, Veritas Software, and Attensity/Sematell.
Daniel Krantz, Vice President AI
As VIER Vice President AI, Daniel Krantz focuses on the orientation and expansion of AI activities, the further development of the VIER product portfolio, the development of new business areas and the expansion of strategic partnerships. Daniel Krantz has a degree in business administration and previously worked at Otto Group and Freenet, among others.
Steffen Langstädtler, Vice President Cloud & Platform Services
Steffen has been VIER Vice President Cloud & Platform Services since August 2021. For Steffen, topics such as technological scaling, stability, high availability, reliability and security are the linchpins of his work and for the continued success of the technology company VIER. Before joining VIER, he worked at Sartorius AG and STI Group.
The team
We are VIER!
We are VIER – and this is only possible thanks to the expertise and enthusiasm of our VIER-o-nauts.
Customers who trust us
VIER makes contact-based business processes more efficient and delivers measurable results. Find out more in our references and success stories about how our intelligent software supports your employees in customer contact and increases your customers' satisfaction!
EnBW
EnBW is convinced that a good customer experience needs a good employee experience. Working with the ACD from VIER engage, this is how excellent customer service is created - and has been since 2016!
CEWE
The photo service provider relies on service transparency and uses VIER to handle all enquiries on 20 hotlines.
ADAC
Through its collaboration with VIER, ADAC has improved its accessibility and implemented a complex routing system that enables faster processing of requests.
Helvetia
With VIER engage, Microsoft Teams, SAP and callback management, Helvetia's customer service experience has reached a whole new level.
