Thomas Hartung - IT Infrastructure Project Manager 20 Years

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Frankfurt am Main, Germany

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Experience

Sep 2023 - Dec 2023

4 months

Germany

Project Manager & Tender Manager

GEA Group AG

Introduction of an access control solution and preparation of a tender for a visitor management system.
As project manager, I am responsible for the successful introduction of a cloud-based access control system at two sites with approximately 4000 employees.
Responsible for the successful implementation of the project.
Preparation and coordination of project plans and status reports with all stakeholders.
Preparation/coordination of an initial effort or cost estimate and related planning for the implementation of operational services.
Identification of interfaces.
Compliance with the budget and schedule.
As Tender Manager / Demand Manager, I am responsible for the following specific tasks:
Analysis of potential providers.
Elicitation of requirements.
Preparation and coordination of the requirements catalog.
Preparation of an evaluation matrix.
Preparation of tender documents.

Jul 2023 - Present

3 years 4 months

Germany

Project Manager

Informations Technik Zentrum Bund

Setup and migration of a server environment in a security-relevant IT environment.
As a project manager according to the V-model or Scrum, I am responsible for the following specific tasks:
Responsible for the successful implementation of the project.
Preparation and coordination of project plans and status reports with all stakeholders.
Preparation/coordination of an initial effort or cost estimate and related planning for the implementation of operational services.
Identification of interfaces.
Compliance with the budget and schedule.
Interaction with the internal departments to implement the project in a targeted manner.

May 2022 - Jun 2023

1 year 2 months

Germany

Technical Solution Management / Demand Management

Informations Technik Zentrum Bund

Technical planning of proposals.
As a Technical Solution Manager / Demand Manager, I am responsible for the following specific tasks:
Responsible for preparing proposals for complex inquiries/solutions.
Preparation and coordination of feasibility studies for technical solutions with a focus on IT operations.
Preparation of the solution design for technical solutions based on the specified business requirements, with a focus on IT operations.
Identification of deviations of designated IT solutions from the specified architecture standards and coordination of extensions to the standards or obtaining exemption approvals.
Coordination of the solution design with the service managers.
Preparation/coordination of an initial effort or cost estimate and related high-level planning for the implementation of operational services.
Coordination of the solution design.

Oct 2021 - Nov 2021

2 months

Germany

Audit of a Subsidiary

ProSiebenSat.1 Media SE

The group introduced a documented Internal Control System so that the effectiveness of the internal control system, which the Supervisory Board is required to monitor pursuant to § 107 III 2 Aktiengesetz, can be demonstrated.
Responsible for the professional IT content of the audit.
Review of the existing documentation.
Evaluation of the documentation and final discussion of the required actions.
IT governance, information security strategy management, access management, change, problem and incident management processes, system data backup & recovery, and IT security were audited.

Oct 2020 - Dec 2022

2 years 3 months

Germany

Demand Manager / Carve-Out Manager

Operational Services GmbH & Co. KG / T-Systems

ICT services for statutory health insurance funds.
T-Systems operates the necessary IT environment as general contractor for an IT service provider serving statutory health insurance funds, with the following parameters: Several data centers, ESX platform, approx. 14,000 virtual servers, approx. 1100 physical servers, storage, SAP-HANA instances, workplace services, directory, print, software and collaboration services, firewall & security.
Function as the link between the customer and the delivery units.
Responsible for preparing proposals for NSSR and CR for complex inquiries/solutions.
Coordination of the analysis, proposal preparation and commissioning.
Implementation of NSSR and CR as project manager through to acceptance.
Carve-Out Manager for the spin-off of a telecommunications group subsidiary.
Deutsche Telekom and telecommunications service provider Cellnex are consolidating their radio towers in the Netherlands.
Through the spin-off of a group subsidiary, T-Systems must make the operation of the following systems accessible to the buyer and ensure the technical transition to a functioning operation: Several data centers, S/4HANA, Proflow, Imagemaster, firewall infrastructure.
Project manager for the implementation and assurance of an operational IT infrastructure through to acceptance.

Jul 2020 - Aug 2020

2 months

Germany

Service Manager

Operational Services GmbH & Co. KG / Deutsche Telekom

Deutsche Telekom Smart Speaker.
This product is provided in the form of a speaker with a digital voice assistant.
It can be used to control smart home components such as lights, heating systems or 3rd-party services by voice command.
Function as the link between the customer and the delivery units.
Responsible service contact.
Coordination of Prio 1/2 incidents and their resolution.
Coordination of changes and problems.
Conducting service review meetings.

Jun 2020 - Jun 2020

1 month

Germany

Consulting

Operational Services GmbH & Co. KG for Volkswagen Financial Service AG

Developing a concept/approach for a port-based VoIP solution.
The existing telephone system (approx. 9000 users), including the contact center solution with voice portal, is to be replaced by a future-oriented solution.
The aim is to create a proposed solution based on a flexible telephone solution that also includes a one-number concept with mobile phones and remote locations.
Creating an outline of the approach.
Defining responsibilities.
Defining the tender parameters.
Preparing an effort estimate for creating this tender.

Apr 2020 - Apr 2020

1 month

Germany

Audit of a subsidiary

ProSiebenSat.1 Media SE

The group has introduced a documented Internal Control System to demonstrate the effectiveness of the internal control system, which the Supervisory Board is required to monitor in accordance with § 107 III 2 Aktiengesetz.
Responsibility for the technical IT content of the audit.
Reviewing the existing documentation.
Evaluating it and holding a final discussion about the actions required.
The areas audited were IT governance, information security strategy management, access management, change, problem and incident management processes, system data backup & recovery, and IT security.

Mar 2019 - Present

7 years 8 months

Frankfurt, Germany

Consultant / Auditor

Messe Frankfurt GmbH

Functional testing and acceptance of the EMA/ZUKO systems (intrusion detection system and access control system) in several exhibition halls.
The testing is carried out by manually triggering an alert, checking the fault indication in the Operation Security Center and subsequently verifying compliance with the work instructions.
The testing is performed twice a year and documented using an acceptance report.
Reviewing the documentation for the intrusion detection system at the data centers.
The plausibility and correctness of the connection of alerts/contact signals to the EMA (intrusion detection system) are checked and fully documented.
Creating procedural instructions for the previously prepared documentation and its connections.

Feb 2019 - Jul 2020

1 year 6 months

Germany

Tender Manager / Demand Manager

T-Systems / Volkswagen Financial Service AG

Client Management Service tender.
Based on an analysis of the previous results, documents and different strategies in the context of client, mobile device and print management, this service is to be transferred to a managed service and also put out to tender for other group companies.
Responsibility for the technical management of the project through to operations.
Analysis of customer needs.
Development of technical solution concepts and their commercial design.
Creating a business case.
Sub-project management functions.
Status meetings with the specialist departments.
Conducting presentations and workshops.
Creating a technical service specification including all necessary requirements.
Quality assurance, audit, compliance, SLA, KPI‘s.

Sep 2018 - Present

8 years 2 months

Germany

Consulting Project / Consulting

One of the leading providers of IT services for connectivity, cyber defense and virtual networking in Germany

Software-defined WANs.
Creating dynamic systems from static, heterogeneous networks.
Easy integration of new locations.
Easy integration of cloud providers.
As little hardware as possible through device virtualization.
Low installation effort.
Central control of network management.
High level of security.
White-label capable.
Introduction of an own SD-WAN product.

Jun 2018 - Jun 2018

1 month

Germany

Consultant

One of the leading providers of IT infrastructure and IT services in Germany

Preparation of the concept content for implementing a firewall cluster.
Security zones.
Object structures.
Request management.
Configuration and operational documentation.
Reporting.

Nov 2017 - Mar 2019

1 year 5 months

Germany

Service Delivery Manager / Service Manager

Operational Services GmbH & Co. KG / Deutsche Telekom

Deutsche Telekom Smart Speaker.
This product is provided as a speaker with a digital voice assistant.
Function as the link between the customer and the delivery teams of operational Services.
Responsibility for the professional support of the project through to operations.
Analysis of customer needs while taking the requirements of cloud services (Azure and VMware) into account.
Development of technical solution concepts as well as their commercial design in the form of offers/service specifications.
Sub-project management functions.
Status meetings with the specialist departments.
Conducting presentations and workshops.
Preparation of a service manual and operations manual.

Feb 2017 - Dec 2017

11 months

Germany

Overall Project Manager incl. Demand Management

Operational Services GmbH & Co. KG / End customer - Confidential

Industry 4.0 in large-scale SMEs: Digital transformation is not a trend, but the consistent next step in industrialization.
The IT infrastructure must be adapted to meet increased requirements: focus on the core business, operating models for IT services, SAAS, security, flexibility, connecting suppliers / partner companies, connection to standard cloud services (e.g. Azure).
Analysis of customer needs and development of technical solution concepts as well as their commercial design.
Analysis of the feasibility of the current network infrastructure.
Preparation of the technical project plan for implementing the necessary requirements.

Nov 2016 - Nov 2016

1 month

Germany

Senior Network Consultant

Operational Services GmbH & Co. KG / End customer - Confidential

Effort planning for creating a network design for the rollout of 145.000 Office 365 clients worldwide.
Compilation of customer requirements.
Consolidation of technical specifications and network loads.
Development of a proposal for the migration / transition.
Effort planning / network load planning / migration planning.
Connection to cloud services.

May 2016 - Oct 2016

6 months

Germany

Bid Manager / Demand Manager

Operational Services GmbH & Co. KG

Coordination of the subprojects (technical).
Compilation of customer requirements.
Consolidation of the technical prequalification of the subprojects.
Development of a proposal for the overall solution.
Preparation of calculations / effort planning / business case for the overall project.
Coordination of the approval process.

Feb 2015 - Dec 2015

11 months

Technical Project Manager

Leading international company in the communications industry (confidential)

Design and planning of a room-in-room project.
Implementation of security planning and security technology.
Implementation of cooling, air conditioning and electrical engineering planning.
Planning of network technology.
Reference size: 1,5 kW per sqm.
Scope of delivery: IT security room, air conditioning, fire detection, fire suppression system, UPS, modular construction.
Technical Project Manager for the implementation of the data center room.

Nov 2014 - May 2016

1 year 7 months

Hamburg, Germany

Consulting & Project Management

T-Systems International GmbH

Pre-gate parking at the Port of Hamburg.
The goal was to optimize the processing of waiting trucks until their unloading slot.
Comprehensive video surveillance with requirements such as: parking spaces free or occupied, detection of vehicles positioned across the road, detection of oversized vehicles, detection when a truck uncouples its trailer.
Design and planning of the project.
Planning of network technology.
Planning of camera locations, including camera masts.
Project management for implementation as Technical Project Manager.

Sep 2013 - Dec 2014

1 year 4 months

Germany

Requirements Manager / Demand Manager

Federal authority – Federal finance division (confidential)

Preparation of a specification for the procurement of a data center.
Preparation of the data center relocation plan.
Development of a building security concept (infrastructural and technological).
Development of a strategy for using cloud services.
Preparation of a concept and planning for emergency power (UPS) on the company campus.
Definition and specification of measures for emergency power supply.
Definition and specification of measures for physical protection (network, peripherals, UPS, video, access, fire, water, etc.).
Introduction of a building security system (BMS/GEMOS).
Introduction of a time recording system (BMS).
Introduction of access control for the data center and campus (BMS).
Preparation of a technical and organizational emergency plan.
Preparation of a data center operations manual.
Preparation of required specifications and attachments for tenders.
Reference size: 3,6 kW per sqm.
Scope of delivery: IT security room, air conditioning, fire detection, fire suppression system, UPS, modular construction.

Jul 2013 - Aug 2013

2 months

Germany

Requirements Manager / Demand Manager

Federal authority – Federal finance division (confidential)

Preparation of a telecommunications concept focusing on replacing the existing ISDN telephone system for approx. 1500 ports, taking SIP and NGN into account.
Determine the fundamentals and requirements for the telecommunications system, LAN and SIP connection.
Preparation of a target concept with the various options / mergers for replacing the existing telecommunications system.
Preparation of technical specifications for requesting offers for a SIP telecommunications system, including service center and ACD.

Jan 2013 - Jun 2013

6 months

Germany

Requirements Manager / Demand Manager / Project Manager

Federal Authority – Federal Finance Sector (confidential)

Creation of a SIP solution architecture including carrier connection, call center and customer site (SIP trunk) for the conversion of the service number (ISDN) to an IP concept (SIP).
Integration into the high-security network infrastructure (VPN tunnel and encryption) between the sites and IVR / ACD.
Integration of redundant SIP converters and implementation using location-bound service numbers.
Preparation of technical specifications for the request for proposals.

Aug 2012 - Dec 2012

5 months

Germany

Project Manager

Federal Authority – Federal Finance Sector (confidential)

Preparation of a target/mach feasibility concept and site analysis of alternative data center locations.
Preparation of a preliminary design for the target/feasibility concept.
Preparation of a bill of quantities for the additional, high-security server room.
Reference size: 1.2 kW per sq. m.
Scope of delivery: IT security room, air conditioning, fire detection, fire suppression system, UPS, modular construction.
Project manager for the sub-project to upgrade the high-security server room.

Jan 2005 - Dec 2019

15 years

Germany

Consultant / Project Manager

Conference on Jewish Material Claims against Germany, Inc.

Ongoing consulting and planning regarding Layer 2 and 3 site networking (LAN/MPLS/SD-WAN).
Implementation of a central and highly redundant Internet connection (HA – High Availability service).
Project manager for the respective conversion measures regarding circuit delivery and implementation.
Consulting on future requirements relating to Software Defined WANs.
Technical project manager for the implementation of the (LAN/MPLS/SD-WAN) infrastructure.

Jan 2005 - Dec 2019

15 years

Germany

Technical Project Manager

Equinet Bank AG / Pareto Securities AS

Ongoing consulting and planning regarding Layer 2 and 3 site networking (LAN/MPLS).
Implementation of a central and highly redundant Internet connection (HA – High Availability service).
Technical project manager for the respective conversion measures regarding circuit delivery and implementation.
Implementation of a highly redundant voice connection.

Jan 2004 - Dec 2006

3 years

Darmstadt, Germany

Consultant

Wella AG

Creation of a high-availability connection concept for the existing fully redundant telephone system at the Darmstadt site.
Connection to the PSTN / ISDN network via two carrier strategies (circuit and route-disjoint redundancy).

Technical Project Manager

The Nielsen Company

Ongoing consulting and planning regarding Layer 3 site networking (MPLS).
Implementation of a central and highly redundant Internet connection (HA – High Availability-Service).
Implementation of highly redundant telephone connections at each site (HA – High Availability-Service).
Technical Project Manager for the respective renovation measures regarding the on-time delivery of lines / services.

Industry experience

See where this freelancer has spent most of their professional time.

Experienced in Information Technology, Banking and Finance, Professional Services, Government and Administration, Fashion, and Telecommunication.

Information Technology

Banking and Finance

Professional Services

Government and Administration

Fashion

Telecommunication

Business area experience

See which departments and functions this freelancer has contributed to most.

Experienced in Information Technology, Project Management, Operations, Product Development, Quality Assurance, and Procurement.

Information Technology

Project Management

Operations

Product Development

Quality Assurance

Procurement

Summary

I have very comprehensive and cross-functional know-how (more than 20 years) in the complex ITC industry environment. Since 2001, I have worked closely with well-known carriers in the ITC industry and therefore have in-depth expertise in site networking, voice connections, IP / LAN connections, data centers/cloud solutions, and the associated preparation of tenders.

In order to implement these projects effectively and successfully for the customer, project management / project planning of ITC projects is the most important component.

Skills

Areas Of Expertise

Data Center Planning > 15 Years
Security Infrastructure > 15 Years
Infrastructure / Site Networking > 20 Years
Itc Infrastructure & Cloud > 20 Years
Project Management > 15 Years
Demand Management > 15 Years
Security, Access Control And Video Surveillance Systems (Bms) > 15 Years

Professional Skills

Expert Project Management
Senior Itc Security Infrastructure & Cloud
Expert Data Center Planning
Expert Bms (Building Management System)
Senior Tender / Demand Manager

Management Experience

Professional Management
Project Management
Disciplinary Management

Other Areas Of Expertise

Data Center Planning (Hoai Phases 1-9), Including Data Center Relocations During Ongoing Operations
Network Infrastructure Topics Such As Wlan, Lan, Wan, Sdwan, Ethernet Networking, Ngn
Voip Voice Solutions (Pbx / Pstn / All-Ip / Encrypted Voice)
Building Management Systems (Time, Access Control, Fire Alarm, Video, Nurse Call, Intrusion Detection)
Security Infrastructure
Cloud Consulting
Setup Of Server Environments / Platforms

Languages

German

Native

English

Advanced

Education

Diplom-Wirtschaftsingenieur · Wirtschaftsingenieurwesen

Certifications & licenses

scrum.org

REFA Prozessorganisator

Security Manager

Sicherheitsüberprüfung SÜ1-G

Statistics

Experience

Total positions 26

Experience in Information Technology 22 y

Avg length 2 y 5 m

Longest experience 14 y 11 m

Global experience

Countries worked in 1 (Germany)

Primary country Germany

Expertise

Recent roles Project Manager & Tender Manager, Project Manager, Technical Solution Management / Demand Management

Main industries Information Technology, Banking and Finance, Professional Services

Main business areas Information Technology, Project Management, Operations

Qualifications

Highest degree Bachelor

Certifications earned 8

Profile

Member since

June 2025

Last update

October 2026

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Frequently asked questions

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Thomas is based in Frankfurt am Main, Germany.

Thomas speaks the following languages: German (Native), English (Advanced).

Thomas has at least 23 years of experience. During this time, Thomas has worked in at least 21 different roles and for 19 different companies. The average length of individual experience is 1 year and 11 months. Note that Thomas may not have shared all experience and actually has more experience.

Based on recent experience, Thomas would be well-suited for roles such as: Project Manager & Tender Manager, Project Manager, Technical Solution Management / Demand Management.

Thomas's most recent position is Project Manager & Tender Manager at GEA Group AG.

In recent years, Thomas has worked for GEA Group AG, Informations Technik Zentrum Bund, ProSiebenSat.1 Media SE, Operational Services GmbH & Co. KG / T-Systems, and Messe Frankfurt GmbH.

Thomas is most experienced in industries like Information Technology, Banking and Finance, and Professional Services. Thomas also has some experience in Government and Administration, Fashion, and Telecommunication.

Thomas is most experienced in business areas like Information Technology, Project Management, and Operations. Thomas also has some experience in Product Development, Quality Assurance, and Procurement.

Thomas has recently worked in industries like Information Technology, Professional Services, and Government and Administration.

Thomas has recently worked in business areas like Information Technology, Product Development, and Operations.

Thomas holds a Bachelor in Wirtschaftsingenieurwesen.

Thomas has 8 certificates. Among them, these include: DGQ Qualitätsbeauftragter, KI-Manager (HC) und KI-Berater (HC) nach DirkZertifikatslehrgang (ZFU), and Professional SCRUM Master.

Thomas is immediately available full-time for suitable projects.

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Daily rate avg. 884 €

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Median rate 916 €

The median daily rate is the middle value of all daily rates — half of comparable freelancers charge less, half charge more. Unlike the average, it is barely affected by outliers.

Calculated based on our freelancers’ daily rates as of 16 Oct 2026. Actual rates may vary depending on seniority level, experience, skill specialization, project complexity, and engagement length.