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With over 20 years of experience in the digital market place, we offer implementation of complex and sophisticated web applications as well as consultation for all aspects of digital media.

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Since 1998, our customers have benefited from our services and our extensive experience in the digital market.

Web Applications

Develop, adapt and enhance.

  • Performance
  • Usability

Security and Transparency in Digital Marketing

GSI offers you a unique platform „Made in Germany“ for analyzing and optimizing your digital marketing. With us you will achieve an over 20% sustainable efficiency and effectiveness increase.

  • Analyse
  • Processing
  • Tracking

Our Team

We are a team of developers, creators and thinkers who will find suitable solutions and new possibilities for you and, above all, with you.

Foto: Sascha Kalabuchow
Sascha Kalabuchow
Foto: V. Münch
V. Münch
Foto: S. Gold
S. Gold
Foto: R. Zerm
R. Zerm
Head of Frontend Development
Foto: K. Schumacher
K. Schumacher
Head of Development
Foto: H. Specht
H. Specht
Foto: C. Benning
C. Benning
VP Sales
Foto: A. Hamdorf
A. Hamdorf
VP Account Management
Foto: B. Glock
B. Glock
Advisory Council

From then until today

Continuity and steady growth make GP One GmbH a reliable and stable partner for the online media sector.

Development and marketing of own internet websites.
Development of web-applications for clients on behalf of resellers.
Termination of reseller-contracts and start of direct sales.
Leap into “Digital Marketing” as marketer.
Founding of in-house advertising marketplace.
Found of GP One GmbH and development start for project “GSI”.
Introduction of various new types of advertising types and sales of marketing rights.
Market launch of the product “GSI”.
Marketing and development of the product “GSI”.


Otto-Wickenhöfer-Str. 7a
D-35108 Allendorf/ Battenfeld (Eder)
+4­9 (0) 6452 - 911360
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We look forward to hearing from you

To contact us, please use the form or just give us a call.

Your career with GP One GmbH

We are always on the look out for new talents, who love doing what we have to offer. We offer you a fully equipped gym for endurance and body training, showers, a sunbed, street ball court and a cinema for lunch and flexi-times.

Database Development (m/f)

We are looking for:
  • MariaDB
  • PostgreSQL
  • Hadoop
  • Spark
Focus: Processing and managing data in the Terabyte range

Backend-Developer (m/f)

We are looking for:
  • PHP
  • Go
  • Python
  • Java
Focus: Development of analyzes, API‘s, administration and processing of large amounts of data.

Frontend-Developer (m/f)

We are looking for:
  • HTML5
  • JavaScript
  • CSS
  • Web GL
Focus: Extraction of information for analysis, vulnerability finding and Frontend development.

Data Scientist (m/f)

We are looking for:


Focus: Search, evaluate and understand fraud. Analyze the collected data and process it for clients and end users.

First- and Second-Level Support (m/f)

For the first-level we are looking for people who can support customers within the product and are able to assist when questions are asked.
For the second-level support, we need tech savvy people with experience in JavaScript and PHP.

Lateral Entrants/Career-Changers (m/f)

We always keep our eyes open for lateral entrants, a hotel professional has become the Head of Developers, to the point of becoming a Vice President, a warehouse profressional with no web development skills has become an innovative developer within just 3 months and a bright and prospective future.