Freelancer
Amplicade GmbH
Cologne, Germany
customer project | ALDI deals
March 2024 - September 2024 (7 months)
Frontend development of the ALDI deals website as well as project setup and maintenance, including CI/CD pipelines and infrastructure automation. Worked in a team with another Backend Developer and a Product Owner.
- Built the whole frontend of ALDI deals from scratch.
- Containerized the application with Docker and deployed it to an Azure Kubernetes Cluster.
- Integrated third-party APIs with the OpenAPI Generator.
- Connected the new ALDI Deals Frontend to already existing and new backend services.
- Prepared and executed production deployment with the help of the Product Owner and Backend Developer.
- Onboarding of new team members and responsible handover of the project to the Product Owner.
ReactTypeScriptNextJSAzure Kubernetes ClusterHelm ChartsFrontend Development
Senior DevOps Engineer
Schäfer Shop GmbH
Betzdorf, Germany
e-commerce for office supplies
September 2022 - Present (2+ years)
Migration of an e-commerce webshop from a proprietary openstack system to a modern private cloud kubernetes environment. Conducted internal training courses for Kubernetes and ArgoCD. Focus on core infrastructure. Participated with AI projects involving LLM through product data etc.
- Worked on migration project from proprietary OpenStack to self-managed Kubernetes on Hetzner.
- Contributed to the conceptualization and planning of migration strategy.
- Implemented environment separation and automation using Makefiles and strategic merging.
- Automated migration of hundreds of domains to Cloudflare.
- Developed and maintained GitLab CI pipelines for continuous integration and deployment.
- Optimized performance of critical infrastructure and frequently used base containers.
- Enhanced system reliability and scalability through continuous monitoring and proactive improvements.
- Provided technical support and troubleshooting for DevOps-related issues.
- Led internal training courses for Kubernetes and ArgoCD.
- Expert in ArgoCD, OIDC integrations, and leveraging LLMs for automating infrastructure processes.
TerraformOpenStackKubernetesk3sGardenerGitOps / ArgoCDHCP Vault SecretsAnsibleKeycloakLLMsPrometheusReactGrafanaHetzner CloudGitLab CI/CDHelm ChartsTraining Courses
DevOps Engineer
AVACO GmbH
Niederkassel, Germany
“workpage” — network to bringing business together
June 2021 - August 2022 (1+ year)
Migration of legacy application deployments from kubernetes to openshift platform (respectively jenkins to tekton pipelines), development enabler, dev ops tech lead assistance, implementing tomorrows infrastructure, re-inventing the product and assisting product management.
- Played a key role in a migration project from Kubernetes to OpenShift on Open Telekom Cloud.
- Assisted coworkers with backend issues and provided technical support.
- Containerized applications and automated infrastructure processes.
- Utilized Terraform and Ansible for infrastructure as code and automation tasks.
- Developed and maintained CI/CD pipelines to ensure smooth deployment processes.
- Implemented monitoring and logging solutions to enhance system reliability.
- Collaborated with cross-functional teams to integrate and deploy new features.
- Ensured system security and compliance with industry standards.
- Optimized infrastructure for scalability and performance.
C#KubernetesAdministrationContinuous IntegrationTech Lead
DevOps Engineer
dynabase Technologies GmbH
Cologne, Germany
IT service provider, customer projects
March 2019 - May 2021 (2+ years)
Full responsibility for (further) development and realization of customer projects, e.g. leaseback.de and rbtx.com; Grafana & Prometheus Monitoring Setup in Azure Kubernetes Cluster. Conducted internal training courses for Kubernetes.
- Developed frontend software for reputable customers such as IGUS, including the IGUS Konfigurator platform and rbtx.com.
- Led a solo development project for Netbid, handling frontend, backend, and infrastructure.
- Utilized Angular and RxJS for building responsive and dynamic web applications.
- Implemented backend services using NodeJS for scalable and efficient server-side applications.
- Containerized applications to ensure consistency across development, testing, and production environments.
- Deployed and managed infrastructure on AWS AKS for high availability and scalability.
- Developed and maintained GitLab CI/CD pipelines for continuous integration and deployment.
- Collaborated with cross-functional teams to deliver high-quality software solutions.
- Ensured system security and optimized performance for customer applications.
TypeScriptAngularKubernetesAWSAzureNodeJS
DevOps Engineer
powwow GmbH
Cologne, Germany
b2b ecommerce for mobile tech
July 2018 - February 2019 (8 months)
Migration of legacy applications to Google Cloud; setup and management of Kafka Cluster, VPN, Firewall, IAM and further development of B2B Java Services.
- Led migration of legacy applications to Google Cloud.
- Set up and managed Kafka Cluster, VPN, Firewall, IAM.
- Developed and maintained B2B Java Services.
- Utilized Java, Gradle, Spring Boot for backend development.
- Implemented infrastructure as code with Terraform.
- Optimized system performance and ensured high availability.
- Collaborated with cross-functional teams to deliver robust solutions.
JavaGradleSpring BootGCPTerraform
Training
FLOWFACT GmbH
Cologne, Germany
real estate and CRM (customer relationship management)
July 2015 - June 2018 (3 years)
Agile software development (scrum + kanban) on Java monoliths. Later also development on new customer software version with focus on React, Javascript, AWS and infrastructure topics in a microservice architecture.
JavaC#JavaScriptReactPHPAWSWordPress Customizer