Cloud Architecture Kubernetes/OpenShift DevOps, CI/CD, Linux, AWS
Aktualisiert am 19.10.2026
Profil
Freiberufler / Selbstständiger
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Verfügbar ab: 19.10.2026
Verfügbar zu: 100%
davon vor Ort: 100%
AWS
Kubernetes
Terraform
JBoss/Wildfly
CI/CD
Jenkins
GitLab
GitHub
Linux
OpenShift
Istio
Serverless
German
native
English
fluent
French
conversation level
Dutch
conversation level

Einsatzorte

Einsatzorte

Deutschland
möglich

Projekte

Projekte

4 Monate
2026-05 - 2026-08

SAGD

DevOps Engineer GitLab VMWare ESX Containers ...
DevOps Engineer
  • Establish CI/CD and DevOps mindset, tools and processes
  • Automate tasks using pipelines and containers
  • Establish agile software development by way of Scrum process
  • Teach new processes and tools to employees
GitLab VMWare ESX Containers Artifactory Linux Windows Golang Bash Python Ansible
Thales Defence
5 Monate
2025-07 - 2025-11

CaaS ? Enterprise-scope Kubernetes-Engine

Kubernetes Expert, Operator Developer, Build Developer Kubernetes GitLab Golang ...
Kubernetes Expert, Operator Developer, Build Developer
  • Write/Maintain Kubernetes Operators
  • Maintain/Develop large Bazel build
  • Maintain infrastructure on AWS
  • Write proposals for infrastructure improvements
Kubernetes GitLab Golang Bazel AWS Python Bash Docker Flux/GitOps Helm GitHub
Mercedes-Benz Tech Innovation GmbH
4 Monate
2025-01 - 2025-04

Kubernetes Engine

Kubernetes Expert Gardener Kubernetes OpenStack ...
Kubernetes Expert
  • Develop and maintain complex distributed infrastructure based on OpenStack and Gardener/Kubernetes
  • Automate deployment tasks
  • Migrate pipeline to consequently use GitOps Pattern
  • Create and enforce Coding Standards: URL on request
  • Write operators for monitoring, billing and various landscape-wide tasks
Gardener Kubernetes OpenStack Cilium Linux Go ArgoCD GitLab Helm Python Bash
Plusserver GmbH
10 Monate
2024-01 - 2024-10

Private cloud infrastructure

DevSecOps Engineer OpenShift Jenkins ArgoCD ...
DevSecOps Engineer
Maintain complex distributed private-cloud infrastructure based on OpenShift. Support application team needs by implementing feature requests.
  • Redesign and reimplement Jenkins pipelines for multiple Projects across all environments dev/ test/ production
  • Set up ArgoCD and build pipelines for deployments of distributed Java Spring application
  • Implement organisation SSO in ArgoCD and make available across institution
OpenShift Jenkins ArgoCD Python Java/Spring
Bundesamt für Migration und Flüchtlinge (BAMF)
10 Monate
2023-03 - 2023-12

BSI-Grundschutz-certified operational planning solution

DevSecOps Engineer Ansible Terraform UEFI Secure Boot ...
DevSecOps Engineer
Develop and roll out highly fail-safe, BSI-Grundschutz certified operation planning solution for country-wide emergency call centers (Integrierte Leitstellen).
  • Modernize company infrastructure in OVH cloud to properly use terraform infrastructure as code.
  • Create central installer application to host network installations via PXE with UEFI Secure Boot for physical machines in a distributed, highly fail-safe environment.
  • Optimize ElasticSearch Performance
  • Plan and roll out installation and configuration of entire highly fail-safe environment starting from the physical layer.
  • Create appropriate hardened images for Windows and Linux machines.
  • Write Ansible playbooks to automatically configure network hardware, servers and client machines.
  • Set up and configure virtualization using Proxmox.
  • Wire a set of distributed services consisting of highly-available storage, telephone, radio transmission, operation planning, monitoring and automated central updates.
  • Moderate collaboration among a range of professionals from domains of security, public projects, networking, etc. to meet complex requirements and document discussions as well as chosen solutions.
Ansible Terraform UEFI Secure Boot PXE OpenStack OVH Python Linux Elastic Search RedHat Proxmox
Sopra Steria SE
9 Monate
2022-06 - 2023-02

Develop and maintain in-house developed

MLOps Engineer AWS Terraform Serverless ...
MLOps Engineer
Develop and maintain in-house developed, cloud-native development environment for automation, machine-learning and data science.
  • Write/test lambda function for backup/deletion of custom AMI images
  • Write and extend CDK modules
  • Refactor code base and unify mail sending through central facade class
  • Rewire mail sending from Simple Email Service to company SMTP, use SQS for queuing to account for quotas
  • Update Kubernetes clusters and software running on them from 1.19 to 1.21
  • Write Tampermonkey script for browsers to clearly indicate if the active AWS account is prod or dev.
  • Extend/test custom AMI images with new user software
  • Write terraform module to use GitHub Actions for automatic testing on repository push
AWS Terraform Serverless Kubernetes GitHub Jenkins Python Linux Prometheus Grafana
Continental AG
1 Jahr 3 Monate
2021-03 - 2022-05

Create data-oriented government web portal

Team-lead infrastructure. Responsible for set up and maintenance of microservice-oriented architecture based VSphere OpenShift on bare metal Red Hat Enterprise Linux ...
Team-lead infrastructure. Responsible for set up and maintenance of microservice-oriented architecture based
Create data-oriented government web portal for researchers and scientists on highly secure private cloud.
  • moderate stakeholder meetings in order to identify and meet security, performance and policy needs
  • Identify resource needs (cpu, memory, licenses)
  • Set up OpenShift on bare metal on BDR managed VSphere cluster
  • Install SAP Hana on OpenShift
  • Install SAP Data Intelligence on OpenShift
  • Set up file hosting service
  • Install MinIO (S3) on OpenShift
VSphere OpenShift on bare metal Red Hat Enterprise Linux SAP Hana SAP DataIntelligence GitLab OpenShift/Kubernetes on bare metal Red Hat Enterprise Linux GitLab on VSphere and OpenShift
Bundesdruckerei GmbH
1 Jahr 5 Monate
2019-10 - 2021-02

multi-tenant development environment

MLOps Engineer AWS Linux Terraform ...
MLOps Engineer
Build large-scale, service-oriented (SOA), AWS-based, multi-tenant development environment for data scientists working at Telefonica
  • write terraform module to set up EKS cluster with Istio service mesh and (lots of) customization
  • Write terraform module to set up ingress, certification, single-sign-on with Keycloak and either SAML or OAuth
  • Write terraform module to set up network/vpc layer with tunnel to company network
  • Write terraform module to install Gitlab, Jira, Confluence, Jenkins
  • Write python boto3 module to start, stop and change EC2 instances on demand
  • Set up deployment pipelines with GitLab
AWS Linux Terraform Docker Kubernetes Istio Bash Ansible Python Django Gitlab OpenID Connect SAML Jira Confluence Prometheus Grafana
Telefonica Germany GmbH & Co. OHG
6 Monate
2019-04 - 2019-09

Shop and marketing platform

DevOps Engineer AWS Linux Terraform ...
DevOps Engineer
Build service-oriented (SOA), web-application with shop and marketing platform with AWS/ Kubernetes.
  • Create/maintain automatic software build (RPM) with Gradle
  • Create automatic database initialization with Gradle
  • Develop Java terminal application for handheld devices
  • Create/maintain automatic tests
  • Optimize/Speed up system routines and initialization
AWS Linux Terraform Docker Kubernetes Istio Bash Ansible Python Django Gitlab CircleCI Jira Confluence
Zeppelin GmbH
2 Jahre 5 Monate
2016-11 - 2019-03

Custom supply chain software

DevOps Engineer Java Spring Gradle ...
DevOps Engineer
Custom supply chain software for DHL/Deutsche Post based on Java Spring, JBoss/Wildfly and Oracle, solving a complex optimization problem
  • Create/maintain automatic software build (RPM) with Gradle
  • Create automatic database initialization with Gradle
  • Develop Java terminal application for handheld devices
  • Create/ maintain automatic tests
  • Optimize/Speed up system routines and initialization
Java Spring Gradle Oracle Linux/RPM Bash Jira Confluence JBoss/Wildfly Docker
star/trac supply chain solutions GmbH
7 Monate
2015-09 - 2016-03

Mobile application (Android tablets) with web component

Developer Java Android Rest ...
Developer
  • Develop mobile application (Android)
  • Develop web application (Node.js)
  • Set up device synchronization (Rest)
Java Android Rest SQL Node.js
storyx AG
5 Jahre 6 Monate
2010-04 - 2015-09

Set up/maintain office infrastructure

System administrator Linux Networking GNU Desktop ...
System administrator
  • Create/maintain netboot operating system, based on Linux for daily office work.
  • Install/maintain servers and office network
  • Set up/maintain automatic test environments (KVM, VirtualBox)
  • Automate regular company tasks and operations
  • Develop several Android applications
  • Develop several iOS applications
Linux Networking GNU Desktop Android iOS
Lohmann & Birkner Mobile Services GmbH

Aus- und Weiterbildung

Aus- und Weiterbildung

2014 ? 2017
FU Berlin
Master of Science
  • After my Bachelor?s degree, I decided to go to Berlin to focus on operating systems, security and cryptography. With two full professorships dedicated to these subjects, FU Berlin was the best location for these subjects.

2010 ? 2014
University of Freiburg
Bachelor of Science
  • Unsatisfied with my role, after completing an apprenticeship as a programmer, I chose to study computer science.

Kompetenzen

Kompetenzen

Top-Skills

AWS Kubernetes Terraform JBoss/Wildfly CI/CD Jenkins GitLab GitHub Linux OpenShift Istio Serverless

Produkte / Standards / Erfahrungen / Methoden

Profile
Senior Cloud/Platform Engineer with 16+ years across Kubernetes, AWS, OpenStack, and IaC (Terraform, Ansible). Led CI/CD, GitOps and distributed platform initiatives, improving delivery speed and reliability while reducing maintenance costs. Passionate about creating organized well-thought-out, scalable architectures for data-intensive and ML workloads.

Skills
  • Cloud: 
    • Kubernetes, Cilium, AWS, Terraform
  • CI/CD: 
    • Jenkins, GitLab, GitHub, GitOps/Flux
  • OS: 
    • Linux, Containers, Docker-Compose, Debian, RedHat
  • Programming:
    • Shell/Bash, Python, Go
  • Monitoring: 
    • Prometheus/Grafana, CloudWatch
  • Automation: 
    • Bash, Make, Bazel
  • Project: 
    • ?Jira, Confluence

Professional insight
  • Creating distributed systems is like construction work. If you don?t place your foundational windows, walls and doors correctly, you end up forever carrying stuff around without getting anything done.
  • Incompetent leaders create foundationally flawed systems that they forever try to refactor because they don?t realize that rebuilding the house you live and host guests in is quite frankly impossible. Your data enforces your structure and your structure enforces your data. You must build a new house, then carry your furniture over.
  • Inferior character wastes any amount of resources in order to save face.
  • 40-60% of any large organization?s C-level is pathological narcissism.

Branchen

Branchen

  • Automotive Industry
  • Public Sector/ Government Agencies
  • Telecommunications
  • Logistics/ Supply Chain
  • IT Services/ Cloud Infrastructure
  • Defense
  • Retail/ E-Commerce
  • Media/ Software Development

Einsatzorte

Einsatzorte

Deutschland
möglich

Projekte

Projekte

4 Monate
2026-05 - 2026-08

SAGD

DevOps Engineer GitLab VMWare ESX Containers ...
DevOps Engineer
  • Establish CI/CD and DevOps mindset, tools and processes
  • Automate tasks using pipelines and containers
  • Establish agile software development by way of Scrum process
  • Teach new processes and tools to employees
GitLab VMWare ESX Containers Artifactory Linux Windows Golang Bash Python Ansible
Thales Defence
5 Monate
2025-07 - 2025-11

CaaS ? Enterprise-scope Kubernetes-Engine

Kubernetes Expert, Operator Developer, Build Developer Kubernetes GitLab Golang ...
Kubernetes Expert, Operator Developer, Build Developer
  • Write/Maintain Kubernetes Operators
  • Maintain/Develop large Bazel build
  • Maintain infrastructure on AWS
  • Write proposals for infrastructure improvements
Kubernetes GitLab Golang Bazel AWS Python Bash Docker Flux/GitOps Helm GitHub
Mercedes-Benz Tech Innovation GmbH
4 Monate
2025-01 - 2025-04

Kubernetes Engine

Kubernetes Expert Gardener Kubernetes OpenStack ...
Kubernetes Expert
  • Develop and maintain complex distributed infrastructure based on OpenStack and Gardener/Kubernetes
  • Automate deployment tasks
  • Migrate pipeline to consequently use GitOps Pattern
  • Create and enforce Coding Standards: URL on request
  • Write operators for monitoring, billing and various landscape-wide tasks
Gardener Kubernetes OpenStack Cilium Linux Go ArgoCD GitLab Helm Python Bash
Plusserver GmbH
10 Monate
2024-01 - 2024-10

Private cloud infrastructure

DevSecOps Engineer OpenShift Jenkins ArgoCD ...
DevSecOps Engineer
Maintain complex distributed private-cloud infrastructure based on OpenShift. Support application team needs by implementing feature requests.
  • Redesign and reimplement Jenkins pipelines for multiple Projects across all environments dev/ test/ production
  • Set up ArgoCD and build pipelines for deployments of distributed Java Spring application
  • Implement organisation SSO in ArgoCD and make available across institution
OpenShift Jenkins ArgoCD Python Java/Spring
Bundesamt für Migration und Flüchtlinge (BAMF)
10 Monate
2023-03 - 2023-12

BSI-Grundschutz-certified operational planning solution

DevSecOps Engineer Ansible Terraform UEFI Secure Boot ...
DevSecOps Engineer
Develop and roll out highly fail-safe, BSI-Grundschutz certified operation planning solution for country-wide emergency call centers (Integrierte Leitstellen).
  • Modernize company infrastructure in OVH cloud to properly use terraform infrastructure as code.
  • Create central installer application to host network installations via PXE with UEFI Secure Boot for physical machines in a distributed, highly fail-safe environment.
  • Optimize ElasticSearch Performance
  • Plan and roll out installation and configuration of entire highly fail-safe environment starting from the physical layer.
  • Create appropriate hardened images for Windows and Linux machines.
  • Write Ansible playbooks to automatically configure network hardware, servers and client machines.
  • Set up and configure virtualization using Proxmox.
  • Wire a set of distributed services consisting of highly-available storage, telephone, radio transmission, operation planning, monitoring and automated central updates.
  • Moderate collaboration among a range of professionals from domains of security, public projects, networking, etc. to meet complex requirements and document discussions as well as chosen solutions.
Ansible Terraform UEFI Secure Boot PXE OpenStack OVH Python Linux Elastic Search RedHat Proxmox
Sopra Steria SE
9 Monate
2022-06 - 2023-02

Develop and maintain in-house developed

MLOps Engineer AWS Terraform Serverless ...
MLOps Engineer
Develop and maintain in-house developed, cloud-native development environment for automation, machine-learning and data science.
  • Write/test lambda function for backup/deletion of custom AMI images
  • Write and extend CDK modules
  • Refactor code base and unify mail sending through central facade class
  • Rewire mail sending from Simple Email Service to company SMTP, use SQS for queuing to account for quotas
  • Update Kubernetes clusters and software running on them from 1.19 to 1.21
  • Write Tampermonkey script for browsers to clearly indicate if the active AWS account is prod or dev.
  • Extend/test custom AMI images with new user software
  • Write terraform module to use GitHub Actions for automatic testing on repository push
AWS Terraform Serverless Kubernetes GitHub Jenkins Python Linux Prometheus Grafana
Continental AG
1 Jahr 3 Monate
2021-03 - 2022-05

Create data-oriented government web portal

Team-lead infrastructure. Responsible for set up and maintenance of microservice-oriented architecture based VSphere OpenShift on bare metal Red Hat Enterprise Linux ...
Team-lead infrastructure. Responsible for set up and maintenance of microservice-oriented architecture based
Create data-oriented government web portal for researchers and scientists on highly secure private cloud.
  • moderate stakeholder meetings in order to identify and meet security, performance and policy needs
  • Identify resource needs (cpu, memory, licenses)
  • Set up OpenShift on bare metal on BDR managed VSphere cluster
  • Install SAP Hana on OpenShift
  • Install SAP Data Intelligence on OpenShift
  • Set up file hosting service
  • Install MinIO (S3) on OpenShift
VSphere OpenShift on bare metal Red Hat Enterprise Linux SAP Hana SAP DataIntelligence GitLab OpenShift/Kubernetes on bare metal Red Hat Enterprise Linux GitLab on VSphere and OpenShift
Bundesdruckerei GmbH
1 Jahr 5 Monate
2019-10 - 2021-02

multi-tenant development environment

MLOps Engineer AWS Linux Terraform ...
MLOps Engineer
Build large-scale, service-oriented (SOA), AWS-based, multi-tenant development environment for data scientists working at Telefonica
  • write terraform module to set up EKS cluster with Istio service mesh and (lots of) customization
  • Write terraform module to set up ingress, certification, single-sign-on with Keycloak and either SAML or OAuth
  • Write terraform module to set up network/vpc layer with tunnel to company network
  • Write terraform module to install Gitlab, Jira, Confluence, Jenkins
  • Write python boto3 module to start, stop and change EC2 instances on demand
  • Set up deployment pipelines with GitLab
AWS Linux Terraform Docker Kubernetes Istio Bash Ansible Python Django Gitlab OpenID Connect SAML Jira Confluence Prometheus Grafana
Telefonica Germany GmbH & Co. OHG
6 Monate
2019-04 - 2019-09

Shop and marketing platform

DevOps Engineer AWS Linux Terraform ...
DevOps Engineer
Build service-oriented (SOA), web-application with shop and marketing platform with AWS/ Kubernetes.
  • Create/maintain automatic software build (RPM) with Gradle
  • Create automatic database initialization with Gradle
  • Develop Java terminal application for handheld devices
  • Create/maintain automatic tests
  • Optimize/Speed up system routines and initialization
AWS Linux Terraform Docker Kubernetes Istio Bash Ansible Python Django Gitlab CircleCI Jira Confluence
Zeppelin GmbH
2 Jahre 5 Monate
2016-11 - 2019-03

Custom supply chain software

DevOps Engineer Java Spring Gradle ...
DevOps Engineer
Custom supply chain software for DHL/Deutsche Post based on Java Spring, JBoss/Wildfly and Oracle, solving a complex optimization problem
  • Create/maintain automatic software build (RPM) with Gradle
  • Create automatic database initialization with Gradle
  • Develop Java terminal application for handheld devices
  • Create/ maintain automatic tests
  • Optimize/Speed up system routines and initialization
Java Spring Gradle Oracle Linux/RPM Bash Jira Confluence JBoss/Wildfly Docker
star/trac supply chain solutions GmbH
7 Monate
2015-09 - 2016-03

Mobile application (Android tablets) with web component

Developer Java Android Rest ...
Developer
  • Develop mobile application (Android)
  • Develop web application (Node.js)
  • Set up device synchronization (Rest)
Java Android Rest SQL Node.js
storyx AG
5 Jahre 6 Monate
2010-04 - 2015-09

Set up/maintain office infrastructure

System administrator Linux Networking GNU Desktop ...
System administrator
  • Create/maintain netboot operating system, based on Linux for daily office work.
  • Install/maintain servers and office network
  • Set up/maintain automatic test environments (KVM, VirtualBox)
  • Automate regular company tasks and operations
  • Develop several Android applications
  • Develop several iOS applications
Linux Networking GNU Desktop Android iOS
Lohmann & Birkner Mobile Services GmbH

Aus- und Weiterbildung

Aus- und Weiterbildung

2014 ? 2017
FU Berlin
Master of Science
  • After my Bachelor?s degree, I decided to go to Berlin to focus on operating systems, security and cryptography. With two full professorships dedicated to these subjects, FU Berlin was the best location for these subjects.

2010 ? 2014
University of Freiburg
Bachelor of Science
  • Unsatisfied with my role, after completing an apprenticeship as a programmer, I chose to study computer science.

Kompetenzen

Kompetenzen

Top-Skills

AWS Kubernetes Terraform JBoss/Wildfly CI/CD Jenkins GitLab GitHub Linux OpenShift Istio Serverless

Produkte / Standards / Erfahrungen / Methoden

Profile
Senior Cloud/Platform Engineer with 16+ years across Kubernetes, AWS, OpenStack, and IaC (Terraform, Ansible). Led CI/CD, GitOps and distributed platform initiatives, improving delivery speed and reliability while reducing maintenance costs. Passionate about creating organized well-thought-out, scalable architectures for data-intensive and ML workloads.

Skills
  • Cloud: 
    • Kubernetes, Cilium, AWS, Terraform
  • CI/CD: 
    • Jenkins, GitLab, GitHub, GitOps/Flux
  • OS: 
    • Linux, Containers, Docker-Compose, Debian, RedHat
  • Programming:
    • Shell/Bash, Python, Go
  • Monitoring: 
    • Prometheus/Grafana, CloudWatch
  • Automation: 
    • Bash, Make, Bazel
  • Project: 
    • ?Jira, Confluence

Professional insight
  • Creating distributed systems is like construction work. If you don?t place your foundational windows, walls and doors correctly, you end up forever carrying stuff around without getting anything done.
  • Incompetent leaders create foundationally flawed systems that they forever try to refactor because they don?t realize that rebuilding the house you live and host guests in is quite frankly impossible. Your data enforces your structure and your structure enforces your data. You must build a new house, then carry your furniture over.
  • Inferior character wastes any amount of resources in order to save face.
  • 40-60% of any large organization?s C-level is pathological narcissism.

Branchen

Branchen

  • Automotive Industry
  • Public Sector/ Government Agencies
  • Telecommunications
  • Logistics/ Supply Chain
  • IT Services/ Cloud Infrastructure
  • Defense
  • Retail/ E-Commerce
  • Media/ Software Development

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