Theodor Heller - IT Service Provider

Q: Where is Theodor based?

Theodor is based in Denzlingen, Germany .

Q: What languages does Theodor speak?

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

Q: How many years of experience does Theodor have?

Theodor has at least 7 years of experience. During this time, Theodor has worked in at least 4 different roles and for 4 different companies . The average length of individual experience is 2 years and 9 months . Note that Theodor may not have shared all experience and actually has more experience.

Q: What is Theodor's latest experience?

Theodor's most recent position is IT Service Provider at Theodor Heller Greenbyte Solutions .

Q: What companies has Theodor worked for in recent years?

In recent years, Theodor has worked for Theodor Heller Greenbyte Solutions , Taifun Tofu GmbH , Otto Wulff GmbH , and IT-Service Johannsen GmbH .

Q: Which industries is Theodor most experienced in?

Theodor is most experienced in industries like Information Technology , Food and Beverage , and Construction .

Q: Which business areas is Theodor most experienced in?

Theodor is most experienced in business areas like Information Technology , Customer Service , and Project Management . Theodor also has some experience in Operations .

Q: Which industries has Theodor worked in recently?

Theodor has recently worked in industries like Information Technology , Food and Beverage , and Construction .

Q: Which business areas has Theodor worked in recently?

Theodor has recently worked in business areas like Information Technology , Customer Service , and Project Management .

Recommended expert

Denzlingen, Germany

Check rate

Experience

Aug 2024 - Present

1 year 10 months

IT Service Provider

Theodor Heller Greenbyte Solutions

Infrastructure support: Maintenance and administration of networks, servers, workstations
Project implementation: Planning and deployment of new systems (e.g. File Server/SharePoint migration, implementation of a Unified Endpoint Management system)
All-around service: Comprehensive management of customer IT, including support, maintenance, and strategic consulting

Apr 2024 - Present

2 years 2 months

System Engineer

Taifun Tofu GmbH

Management and further development of the company infrastructure
Implementation of new projects in production environment, cloud, network & security
Responsibility for security & compliance, infrastructure & operations, and automation & configuration
Technical project management and coordination between departments, support teams, and external service providers

Mar 2022 - Jan 2024

1 year 11 months

System Administrator

Otto Wulff GmbH

Project lead for introducing a Sophos XDR solution to increase detection rate and speed up incident response
Implementation of an endpoint management system based on Microsoft Intune
Planning, piloting, phased rollout to 1000 endpoints, and implementation of standard configurations (baselines, compliance checks)
Development of automated patch and hardening workflows, reducing manual intervention and standardizing security updates

Feb 2019 - Feb 2022

3 years 1 month

Apprentice IT Specialist in System Integration

IT-Service Johannsen GmbH

Apprenticeship with a practical focus on user support, incident management, and customer service
Early responsibility for on-site customer assignments: Independent installation, configuration, troubleshooting, and user training
Participation in rollouts, system installations, network & server projects, and documentation
Basics of virtualization (VMware/Hyper-V), backup/restore strategies, and IT security
Experience in customer communication, ticket handling, and implementing support processes

Industry Experience

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

Experienced in Information Technology, Food and Beverage, and Construction.

Information Technology

Food and Beverage

Construction

Business Area Experience

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

Experienced in Information Technology, Customer Service, Project Management, and Operations.

Information Technology

Customer Service

Project Management

Operations

Summary

System Engineer with experience in infrastructure, system administration, and project implementation.

Since August 2024, self-employed as an IT service provider. Managing customer infrastructures, implementing new projects, and providing comprehensive support for all IT-related issues.

Skills

Infrastructure: Administration Of Networks (Routing, Switching, Vpn), Proxmox, Vmware/hyper-v, Windows & Linux Servers And Storage Systems.
Cloud & Collaboration: Microsoft 365 (Exchange, Teams, Sharepoint, Azure Ad), Google Workspace (User & Policy Management), Nextcloud (Open Source).
Security: Firewall Management (Mikrotik, Sophos, Watchguard, Fortinet), Endpoint Security & Xdr, Backup & Restore Concepts.
Mdm & Device Management: Intune, Jamf & Miradore For Windows, Macos & Mobile Devices (Policies, Software Distribution, Compliance).
Project Work & Support: It Project Planning & Rollouts, Coordination With External Partners, User Support (1st–3rd Level), Troubleshooting & Training.

Languages

German

Native

English

Advanced

Education

Feb 2019 - Feb 2022

IT-Service Johannsen GmbH

IT Specialist in System Integration

Statistics

Experience

Total positions 4

Experience in Information Technology 5 y

Avg length 2 y 2 m

Longest experience 3 y

Expertise

Recent roles IT Service Provider, System Engineer, System Administrator

Main industries Information Technology, Food and Beverage, Construction

Main business areas Information Technology, Customer Service, Project Management

Qualifications

Profile

Created

May 2026

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Frequently asked questions

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

Where is Theodor based?

Theodor is based in Denzlingen, Germany.

What languages does Theodor speak?

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

How many years of experience does Theodor have?

Theodor has at least 7 years of experience. During this time, Theodor has worked in at least 4 different roles and for 4 different companies. The average length of individual experience is 2 years and 9 months. Note that Theodor may not have shared all experience and actually has more experience.

What roles would Theodor be best suited for?

Based on recent experience, Theodor would be well-suited for roles such as: IT Service Provider, System Engineer, System Administrator.

What is Theodor's latest experience?

Theodor's most recent position is IT Service Provider at Theodor Heller Greenbyte Solutions.

What companies has Theodor worked for in recent years?

In recent years, Theodor has worked for Theodor Heller Greenbyte Solutions, Taifun Tofu GmbH, Otto Wulff GmbH, and IT-Service Johannsen GmbH.

Which industries is Theodor most experienced in?

Theodor is most experienced in industries like Information Technology, Food and Beverage, and Construction.

Which business areas is Theodor most experienced in?

Theodor is most experienced in business areas like Information Technology, Customer Service, and Project Management. Theodor also has some experience in Operations.

Which industries has Theodor worked in recently?

Theodor has recently worked in industries like Information Technology, Food and Beverage, and Construction.

Which business areas has Theodor worked in recently?

Theodor has recently worked in business areas like Information Technology, Customer Service, and Project Management.

What is Theodor's education?

Theodor attended IT-Service Johannsen GmbH for IT Specialist in System Integration.

What is the availability of Theodor?

Theodor will be available from May 2026.

What is the rate of Theodor?

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