Company | SQ Solutions

Who we are

As mainframe specialists based in Frankfurt am Main, we help companies make their business-critical systems fit for the future. From analyzing existing applications to successfully transforming them into modern architectures, we combine research, technology and project experience.

What we do

For decades, mainframes have formed the digital backbone of many companies, especially in the financial sector. We help our clients understand complex mainframe systems, identify practical optimization potential and make modernization sustainable. From analyzing existing applications and developing architecture and migration concepts through to technical implementation, we support you along your individual modernization path.

The founding team

Founder / CTO Prof. Dr. Philipp Brune

Founder / CEO Dennis Seifert

Our vision

We believe that successful mainframe modernization happens where deep expert knowledge meets technological excellence. With historically grown systems, that is a monumental task – one we make manageable with LegacAI, our AI approach developed in research and proven in practice.

Our mission

We help companies transform their legacy systems step by step into future-proof architectures. In doing so, we rely on long-term partnerships, personal collaboration and sustainable results rather than short-term fixes.

Our values

#1

Evolution instead of disruption

We evolve existing systems in a controlled way – with a focus on stability, cost-efficiency and long-term success.

#2

Partnership on equal terms

Excellence comes from understanding – that is why we speak your language: professionally, technically and personally.

#3

Trust through responsibility

Changes affect the system as a whole – we act with precision and make decisions transparent.

#4

Science meets practice

We combine current research with many years of project experience to create solutions that are sound in both theory and practice.

Our office

TechQuartier in Frankfurt am Main is our home. This is where we regularly meet as a team, foster personal exchange and develop new ideas together. At the same time, we benefit from direct contact with founders, technology companies and other innovators. This exchange keeps us close to current developments and creates an environment in which new perspectives and forward-looking solutions emerge.

“Technology doesn’t solve problems. People with the right technology in the right environment do.”

Dennis Seifert Founder / CEO

Careers

Learn at the cutting edge. Grow with us.

We are looking for young and experienced talent – apply today!

Publications

We use our own Gen-AI tool to improve quality and reduce effort.

Research is part of our DNA. Discover selected publications, articles and scientific papers from our network.

View our publications

Prof. Dr. Philipp Brune and Dennis Seifert, founders of SQ Solutions

About us

We modernize application systems. Evolutionary. Practical.