FRATCH

Recommended expert

Berlin, Germany

Experience

Feb 2024 - Dec 2024

11 months

Infrastructure Architect IPv6 Test Lab

Federal Agency

Infrastructure architect for an IPv6 test lab for all federal agencies
Supporting internal IT with design questions

Jan 2023 - Present

3 years 2 months

Network Architect / IT Consultant

Federal Agency

IT infrastructure design focusing on network architecture for a subproject
Creating WLAN designs for various concepts

Nov 2022 - Jun 2023

8 months

IT Infrastructure Architect Test Lab

Federal Agency

Developing rough and detailed concepts for a test lab

Dec 2020 - Apr 2021

5 months

Interim Manager and Technical Team Lead Network Management

Douglas Informatik GmbH

Leading the network team
Security assessments
Supporting process design

Oct 2020 - Dec 2022

2 years 3 months

Product and Portfolio Manager

Federal Agency

Introducing new connections for agencies in the VS-NfD area in coordination with BSI
Implementing new mobile access for agencies
Providing technical support in network architecture

Nov 2017 - Jun 2020

2 years 8 months

Change and Asset Manager

NTT Germany AG & Co KG

Change and asset management according to ITIL for 12 sites in Germany and Austria (LAN, WLAN, WAN, data center)
Leading around 50 onsite engineers
Direct communication with customer management
Implementation and review of new change processes in the LAN, WLAN, WAN, and data center area
Management of around 25,000 Cisco devices
Customer: MAN Truck and Bus, MAN Diesel Turbo (VAG)

Nov 2016 - Oct 2017

1 year

Support Engineer

Dimension Data AG & Co KG

Support in the Network Operation Center (NOC) for LAN, WLAN, WAN, and data center
Customers: MAN Truck and Bus, MAN Diesel Turbo (VAG)

Sep 2016 - Present

9 years 6 months

Managing Partner

PITNAS GmbH

Self-employed as an IT consultant for small and medium-sized businesses and enterprise infrastructures in networking and security
Process design and support for the introduction of new IT-related processes
Planning and building/rebuilding networks, network design, WLAN infrastructures, and concept creation for projects
Change and asset management as well as product and portfolio management
Sales of IT hardware and troubleshooting in various areas
Remote service and on-site service (specialized in HP/Aruba, Cisco, DELL, Ubiquiti, LANCOM)
Firewall experience with Cisco, Check Point, WatchGuard, Sophos, Genua, Securepoint
Data center design and WLAN site surveys with Ekahau

Apr 2015 - Oct 2016

1 year 7 months

IT Consultant and Pre-Sales

Kupper Computer GmbH

System engineering, pre-sales, and IT consulting primarily for networking and security topics
Vendors: HP/Aruba, Cisco, DELL, WatchGuard, Ubiquiti, VMware, Veeam
Clients: city administrations in Saxony and Thuringia, CJD private schools, Spitzke, Charité Campus, LKA Berlin, Cottbus Chamber of Crafts, Jerichower Land emergency dispatch center, HelloFresh, Fenstertechnik Brand, KROLL Logistics

Dec 2012 - Mar 2015

2 years 4 months

Network System Administrator

RBS-RoeverBroennerSusat

2nd/3rd level support and network administration for 12 sites
Migration and redesign of two companies into a network with a new IP and VLAN concept
Setting up a new VMware cluster structure and redesigning the backup structure
Maintenance of internal systems (Cisco IronPort, Check Point firewall, Cisco ASA5550, Kemp load balancer, WatchGuard cluster, Alcatel PBX)
Implementation of VoIP and MACMON NAC system
Creation of operations and manual documentation and training of 1st-level support

Jun 2012 - Nov 2012

6 months

Network Administrator

Autovision GmbH / Carmeq GmbH

Internal helpdesk and client support
Network administration of the internal network and connection to VAG
Alcatel PBX administration
Implementation of an IDS/IPS

Jun 2009 - May 2012

3 years

System and Network Administrator

Interoute Germany GmbH

Infrastructure IT and Microsoft environments
Design of new data center fire compartments
Project management and implementation of new customer projects in managed service hosting
Capacity planning in the data center
Network designs for customer projects
Customers: Schwarz, AirBerlin, YouGov, Sulake, Sevenload, Bayer CropScience, Sony Germany, Tradegate

Jan 2009 - May 2009

5 months

System and Network Administrator

Freelancer

LAN and infrastructure IT
Siemens PBX systems
Customers: Landesbank Berlin, Berliner Bank, Deutsche Telekom AG

Mar 2001 - Feb 2008

7 years

Self-Service Technician

TSG

Maintenance of ATMs and bank networks (LAN)

Aug 1996 - Jul 1997

1 year

PC Technician

Computer System 2000

PC hardware and support

Industries Experience

See where this freelancer has spent most of their professional time. Longer bars indicate deeper hands-on experience, while shorter ones reflect targeted or project-based work.

Experienced in Information Technology (17 years), Banking and Finance (7.5 years), Government and Administration (5.5 years), Telecommunication (3.5 years), Automotive (3 years), and Manufacturing (2.5 years).

Information Technology

Banking and Finance

Government and Administration

Telecommunication

Automotive

Manufacturing

Business Areas Experience

The graph below provides a cumulative view of the freelancer's experience across multiple business areas, calculated from completed and active engagements. It highlights the areas where the freelancer has most frequently contributed to planning, execution, and delivery of business outcomes.

Experienced in Information Technology (25 years), Operations (13 years), Project Management (3 years), Product Development (2 years), and Sales (1.5 years).

Information Technology

Operations

Project Management

Product Development

Sales

Skills

Network Infrastructure
Process Design
Change Management
It Consulting
It Infrastructure Design
Wlan Design
It Infrastructure Auditor
It Security Expert

Languages

German

Advanced

Education

Feb 2006 - Dec 2008

Diploma Network Manager (FH) · Network Management

Aug 1997 - Jan 2001

Energy Electronics Technician - Industrial Engineering

Secondary School

School Education

Certifications & licenses

3CX Basic Cert

AEVO – IHK trainer for IT specialists

CERT+ Auditor and Engineer for SME infrastructures

Cisco CCNA

Ekahau WLAN Design ECSE

Extreme Certified Expert Networking

Genua Genugate Specialist

IT expert as per DGuSV for IT security and IT infrastructures

ITILv3 Foundation

Masterclass Columbia University for Technology Management New York

Masterclass Northeastern University Center for Technology Management & Digital Leadership Cybersecurity EMEA

Microsoft MCITP Enterprise

NIS2-Professional Auditor

Nutanix NPSR Sales Expert

Rapid7 Sales Essentials

Securepoint Expert for E-Mail Archiving

Securepoint NG UTM Firewall Expert

Synology Backup Architect

Synology DSM Architect

VMware vSphere 5.5

Veeam VMSP and VMTSP

Profile

Created

April 2025

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Frequently asked questions

Do you have questions? Here you can find further information.

Where is Thorsten based?

Thorsten is based in Berlin, Germany and can operate in on-site, hybrid, and remote work models.

What languages does Thorsten speak?

Thorsten speaks the following languages: German (Advanced).

How many years of experience does Thorsten have?

Thorsten has at least 25 years of experience. During this time, Thorsten has worked in at least 14 different roles and for 12 different companies. The average length of individual experience is 2 years and 8 months. Note that Thorsten may not have shared all experience and actually has more experience.

What roles would Thorsten be best suited for?

Based on recent experience, Thorsten would be well-suited for roles such as: Infrastructure Architect IPv6 Test Lab, Network Architect / IT Consultant, IT Infrastructure Architect Test Lab.

What is Thorsten's latest experience?

Thorsten's most recent position is Infrastructure Architect IPv6 Test Lab at Federal Agency.

What companies has Thorsten worked for in recent years?

In recent years, Thorsten has worked for Federal Agency, Douglas Informatik GmbH, and PITNAS GmbH.

Which industries is Thorsten most experienced in?

Thorsten is most experienced in industries like Information Technology (IT), Banking and Finance, and Government and Public Administration. Thorsten also has some experience in Telecommunication, Automotive, and Manufacturing.

Which business areas is Thorsten most experienced in?

Thorsten is most experienced in business areas like Information Technology (IT), Operations, and Project Management. Thorsten also has some experience in Product Development and Sales.

Which industries has Thorsten worked in recently?

Thorsten has recently worked in industries like Information Technology (IT) and Government and Public Administration.

Which business areas has Thorsten worked in recently?

Thorsten has recently worked in business areas like Information Technology (IT), Product Development, and Operations.

What is Thorsten's education?

Thorsten attended education in Network Management.

Does Thorsten have any certificates?

Thorsten has 21 certificates. Among them, these include: 3CX Basic Cert, AEVO – IHK trainer for IT specialists, and CERT+ Auditor and Engineer for SME infrastructures.

What is the availability of Thorsten?

Thorsten is immediately available part-time for suitable projects.

What is the rate of Thorsten?

Thorsten's rate depends on the specific project requirements. Please use the Meet button on the profile to schedule a meeting and discuss the details.