People Make the Difference
Personal. Competent. Reliable.
More than 80 employees at GRASS-MERKUR work every day to ensure secure, highly available and future-proof IT.
Successful Together
Numbers That Speak for Our Team
From the initial consultation through planning to day-to-day operations, our experts work hand in hand.
We combine technical expertise with personal support, short decision-making paths and a commitment to finding the right solution for every challenge.
It is precisely this interplay that makes us a reliable partner on equal terms.
As an owner-managed family business headquartered in Hanover, we have stood for continuity, reliability and long-term partnerships since 1971 — with Georg Ahlbrand, the fifth generation is now represented in the company.
In this way we combine long-standing values with the courage to actively shape the IT infrastructure of tomorrow, relying on a strong team that walks this path alongside us.
Our Mission
We Develop Solutions — Not Just Systems
Management
Responsibility for the Future of Digital Infrastructure
Jens Ahlbrand
Managing Partner
Jens Ahlbrand leads GRASS-MERKUR as managing partner and shapes the company’s strategic development. Under his leadership, GRASS-MERKUR has steadily evolved into a modern provider of secure, sustainable and sovereign IT infrastructures.
Alongside his entrepreneurial responsibilities, he actively contributes to the advancement of the data center industry with over 30 years of expertise and is particularly committed to issues such as sustainability, digitalization and digital sovereignty. In this way he combines business continuity with the goal of positioning GRASS-MERKUR for the future — for generations to come.
Throughout, he sees himself as a driving force behind a company that embodies tradition and innovation in equal measure.
Holger Sievers
Managing Director
Holger Sievers has been a member of the GRASS-MERKUR management team since 2026. With more than 30 years of experience in dynamic IT companies — from international corporations to medium-sized businesses — as well as 18 years in C-level roles at medium-sized IT companies, he is consistently driving the company’s further development.
His focus is on optimizing processes, service quality and sustainable growth. He brings in-depth expertise in business development, portfolio management and sales, as well as IT transformation and digitalization.
Together with his team he develops high-performance IT solutions to meet the demands of modern IT infrastructures and actively shapes GRASS-MERKUR’s path as a reliable partner for clients in the insurance industry, e-commerce, retail and logistics.
Your Contacts
Personal Advice on Equal Terms
