Christian Dülberg - DevOps Engineer

Q: Where is Christian based?

Christian is based in Plagiari, Greece .

Q: What languages does Christian speak?

Christian speaks the following languages: German (Advanced), Greek (Advanced), English (Advanced) .

Q: How many years of experience does Christian have?

Christian has at least 29 years of experience. During this time, Christian has worked in at least 11 different roles and for 12 different companies . The average length of individual experience is 2 years . Note that Christian may not have shared all experience and actually has more experience.

Q: What is Christian's latest experience?

Christian's most recent position is DevOps Engineer at KfW .

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

In recent years, Christian has worked for KfW and DB Systel .

Q: Which industries is Christian most experienced in?

Christian is most experienced in industries like Information Technology (IT) , Banking and Finance , Media, and Entertainment and Publishing . Christian also has some experience in Professional Services , Advertising , and Agriculture .

Q: Which business areas is Christian most experienced in?

Christian is most experienced in business areas like Information Technology (IT) , Operations , and Customer Service . Christian also has some experience in Product Development , Research and Development (R&D) , and Marketing .

Q: Which industries has Christian worked in recently?

Christian has recently worked in industries like Banking and Finance and Information Technology (IT) .

Q: Which business areas has Christian worked in recently?

Christian has recently worked in business areas like Information Technology (IT) and Operations .

Recommended expert

Plagiari, Greece

Experience

Aug 2021 - Sep 2025

4 years 2 months

Greece

DevOps Engineer

KfW

Optimization, maintenance, and support of the Microsoft Azure cloud infrastructure for KfW customer projects
Migration of cloud-native services to Container Apps and setup of containerized infrastructure with Kubernetes
Implementation and maintenance of the hub-and-spoke landing zone cloud automation architecture
Implementation and maintenance of pipelines (Medallion, AI) to consolidate and present all ecologically/economically relevant company data (Databricks, Data Lake, Azure Fabric, Power BI)
Automation of application infrastructure (IaC, CI/CD) across all stages (Dev, Test, Production) via Git, Terraform, Ansible, and Azure Pipelines
Development and implementation of required cloud permission structures (RBAC, Entra ID, Security Policies)
Error analysis, stabilization, and security measures via Splunk and Elastic Search in the DevSecOps environment
Administration of Linux (RHEL 8, 9; SLES) and Windows Server
Incident, change, and release management (ServiceNow, ITSM, Jira, HPESM)
Scripting (Bash, PowerShell, HCL, YAML)
Process automation and optimization in agile CI/CD pipelines
Documentation and knowledge management

Aug 2020 - Apr 2021

9 months

Germany

DevOps Engineer/Coordinator

DB Systel

Optimization, maintenance, and support of AWS cloud infrastructure for DB Energie customers
Automation of CI/CD across all stages (Dev, Test, Integration, Production) using Git/Jenkins pipelines and CloudFormation
Setup and teardown of EC2 and RDS instances (manual, Ansible AWX, CloudFormation)
Infrastructure as Code (Terraform, Ansible)
Automated patch management (OS level, VMs), error analysis, and stabilization
Administration of Linux and Windows
Incident and change management (ITSM, Jira)
Scripting
Process automation and process optimization
Documentation and knowledge management

Sep 2019 - May 2020

9 months

Germany

DevOps Engineer

FITS

Optimization, maintenance, and support of the FreeBSD-based secure cloud infrastructure for state banks and savings banks
Implementation and configuration of application containers for Dev, Test, Int, and Prod (automation, scripting, shell, Ruby)
Log management, normalization and consolidation, data stream SIEM with Elastic Search
Resource monitoring
Multi-level support for configuration, deployment and release management, incident and escalation management, network/firewall/DNS, and software implementation
Process automation and process optimization
Documentation and knowledge management

Oct 2017 - Aug 2019

1 year 11 months

Germany

DevOps Engineer

Postbank Systems AG

Analysis of potential migrations of banking software systems to the cloud (lift-and-shift)
Evaluation and implementation of cloud computing (private cloud, hybrid cloud) with AWS, MS Azure, and GCP in testing and comparison
Setup of exemplary PoCs for IaaS, PaaS, SaaS, and FaaS
Unified data streaming and analytics of heterogeneous data pools
Setup of a private cloud with OpenShift in data centers
Implementation of BaFin compliance requirements
Operations access management (OAM) and controlled assignment of access rights
Log management and analysis
Resource monitoring
Documentation and knowledge management

Oct 2014 - Oct 2017

3 years 1 month

Germany

Application Manager

Postbank Systems AG

Support for operating banking applications in payment processing and core banking systems (multichannel/multitier components)
Automated deployments through the change management process (Dev, Test, Int, Prod)
Operations access management and controlled assignment of access rights
Establishment of interfaces and workflows
Support for code compare security audits for BaFin
Batch processing, creation and maintenance
Log management and analysis
Resource monitoring
Fraud detection and prevention
Incident, escalation, and change management
Documentation and knowledge management

Oct 2013 - Sep 2014

1 year

Germany

DevOps-Engineer

Claas Agrosystems

Setup and operation of the IT infrastructure for the 365FarmNet startup in a cloud and big data environment
Implementation of an OSGi framework, microservices, and data streams with Kafka/Felix/Karaf
Setup of multi-tier components and databases
Automated provisioning in the cloud (AWS, MS Azure, Cloudbricks) using Chef server-client and Kubernetes (proof of concept)
Operation as an on-premise infrastructure at Hosteurope
Access management and certificate management
Log management and analysis
Monitoring and problem management
Configuration, testing, deployment, and release management
Network planning and DNS management
KPI analysis and unified data analysis (Spark, Kafka, Databricks)
Documentation and knowledge management

Aug 2012 - Sep 2013

1 year 2 months

Germany

Application Manager

Postbank Systems AG

Implementation of the multi-tier application TXSuite for managing and processing covered refinancing at BHW
Setup of the multi-channel architecture and databases
Integration of technical interfaces into the enterprise application landscape
Incident and escalation management
Batch processing and monitoring (24/7)
Log management, analysis, and monitoring
Creation of system status dashboards and reporting
Optimization of application structures
Documentation and knowledge management

Dec 2011 - Jun 2012

7 months

Germany

Operational Analyst

ING-Diba AG

24/7 support for operating the on-premise IT infrastructure from the command center
Monitoring of all IT-supported business processes
Escalation and incident management
Process management and continuous improvement
Oversight of release and configuration management
Second-level support for call centers
Organizational data center administration
Documentation and knowledge management

May 2007 - Nov 2011

4 years 7 months

Greece

DevOps-Engineer/CTO

Multihosting OE

Founded and started up a Greek hosting provider, developing and operating the infrastructure
Developed modern pricing models for the EU market
Planning, implementation, and operation of dedicated and virtualized server systems
Network, firewall, and security concepts
Accounting and business logic
Configuration and lifecycle management
Log management and monitoring
Problem and escalation management, as well as helpdesk/multi-level support
Backup strategies

Apr 2006 - Oct 2011

5 years 7 months

Greece

System Administrator/Developer

Ratio Software Factory

Design, development, implementation, and operation of the Mistral ERP system (in-house development)
Creation of new forms and functions in the internal development framework
Maintenance and servicing of databases
Development of migration and integration components
Deployment and release management
Customer helpdesk (multi-level support)
Documentation

Feb 2004 - Apr 2006

2 years 3 months

Greece

Application Manager/System Administrator

Metropolis SA/Emmetron SA

Operation, service, and support of in-house developments in document management, scanner solutions, and data analysis tools
Implementation for clients in the Balkan region
Quality assurance and test automation
Development of a package distribution system with fuzzy logic and AI elements
Multi-level customer support (Greek, English)
Release and deployment management
Establishment of interfaces to ERP systems
Documentation and knowledge management

Feb 2002 - Feb 2004

2 years 1 month

Greece

System Administrator

Typos Thessaloniki Newspaper

Ensuring 24/7 operation of the IT infrastructure and introduction of modern technologies
Administration and maintenance of server infrastructure, networks, and Windows terminals
Implementation and maintenance of Linux file servers and print servers
Design, implementation, and operation of the newspaper's first online edition
Image editing (QuarkXPress, Photoshop)
Documentation and knowledge management

Mar 1999 - Jan 2002

2 years 11 months

Germany

CEO/CTO/Development

Sagytar Web Arrangements

Founding a partnership and launching a wedding-focused online portal with local businesses
Concept, development, and maintenance of websites and e-commerce applications for SMEs
Development of an online portal as an advertising platform with planning tools for customers
Creation of modern pricing structures and marketing and sales strategies
Documentation and knowledge management

Jun 1996 - Sep 1999

3 years 4 months

Germany

Student Assistant

GfAH mbH

Assistance with data collection, library and internet research
Collaboration on projects related to occupational safety measures and workplace ergonomics

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 (13 years), Banking and Finance (10.5 years), Media and Entertainment (5 years), Professional Services (3.5 years), Advertising (3 years), and Agriculture (1 year).

Information Technology

Banking and Finance

Media and Entertainment

Professional Services

Advertising

Agriculture

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 (26 years), Operations (13.5 years), Customer Service (8 years), Product Development (5.5 years), Research and Development (3.5 years), and Marketing (3 years).

Information Technology

Operations

Customer Service

Product Development

Research and Development

Marketing

Summary

For more than 25 years, I have primarily worked as a System Administrator and DevOps Engineer in Germany and across Europe. I have extensive hands-on experience in planning, implementing, securing, and maintaining complex on-premises and cloud-based IT systems. My work reflects a deep understanding of the fundamentals and methods required to meet modern demands and technologies. Whether as a team member or working independently, I work quickly, stay solution-focused, and act sustainably.

Skills

Cloud Computing
Scripting
Quality Assurance
Monitoring
It Security/siem
Networking
Windows
Linux
Virtualization
Containerization
Docker/kubernetes
Ci/cd Pipelines
Lifecycle
Testing
Agile Methods
Itsm

Languages

German

Advanced

Greek

Advanced

English

Advanced

Education

Oct 1992 - Jun 1999

Bochum University of Applied Sciences

Studies · Electrical Engineering · Bochum, Germany

Oct 1990 - Jun 1992

Technical High School for Electrical Engineering

Electrical Engineering · Bochum, Germany

Oct 1980 - Jun 1985

Nolte GmbH

Apprenticeship · Electrician · Bochum, Germany

Profile

Created

October 2025

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Frequently asked questions

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

Where is Christian based?

Christian is based in Plagiari, Greece.

What languages does Christian speak?

Christian speaks the following languages: German (Advanced), Greek (Advanced), English (Advanced).

How many years of experience does Christian have?

Christian has at least 29 years of experience. During this time, Christian has worked in at least 11 different roles and for 12 different companies. The average length of individual experience is 2 years. Note that Christian may not have shared all experience and actually has more experience.

What roles would Christian be best suited for?

Based on recent experience, Christian would be well-suited for roles such as: DevOps Engineer, DevOps Engineer/Coordinator, Application Manager.

What is Christian's latest experience?

Christian's most recent position is DevOps Engineer at KfW.

What companies has Christian worked for in recent years?

In recent years, Christian has worked for KfW and DB Systel.

Which industries is Christian most experienced in?

Christian is most experienced in industries like Information Technology (IT), Banking and Finance, Media, and Entertainment and Publishing. Christian also has some experience in Professional Services, Advertising, and Agriculture.

Which business areas is Christian most experienced in?

Christian is most experienced in business areas like Information Technology (IT), Operations, and Customer Service. Christian also has some experience in Product Development, Research and Development (R&D), and Marketing.

Which industries has Christian worked in recently?

Christian has recently worked in industries like Banking and Finance and Information Technology (IT).

Which business areas has Christian worked in recently?

Christian has recently worked in business areas like Information Technology (IT) and Operations.

What is Christian's education?

Christian attended Bochum University of Applied Sciences for Electrical Engineering.

What is the availability of Christian?

Christian is immediately available for suitable projects.

What is the rate of Christian?

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