Über Rainer
I help IT teams modernize and operate reliable application platforms – from traditional on-premises and virtualized environments to cloud-native solutions on Azure and AWS.
What sets me apart is my combination of deep enterprise infrastructure experience and hands-on DevOps and cloud engineering skills. Having worked for many years with complex data center environments, I understand the challenges of legacy applications, operational requirements, and business-critical systems. At the same time, I bring practical experience with Kubernetes, Terraform, CI/CD, GitOps, automation, and cloud platforms.
I typically support projects involving cloud adoption, infrastructure automation, platform engineering, containerization, application migration, observability, and operational excellence. My approach is pragmatic: I meet teams where they are, help them identify the next meaningful step, and guide them through implementation.
Beyond technology, I contribute experience in customer consulting, technical leadership, agile delivery, and software development. Whether the goal is to improve reliability, automate repetitive work, modernize infrastructure, or establish DevOps practices, I focus on creating solutions that are maintainable, scalable, and aligned with business needs.
Deutsch
Muttersprachlich oder zweisprachig
Englisch
Verhandlungssicher
Spanisch
Grundkenntnisse
Vor Ort möglich
Essen (bis zu 20 km), Marl (bis zu 30 km)
Projekt- und Berufserfahrung
- Hewlett Packard EnterpriseSenior Technical ConsultantTECHAugust 2009 - Oktober 2025 (16 Jahre und 2 Monate)Ratingen, Deutschland• • Analysed complex enterprise environments across Windows, Linux, virtualization, databases, and storage to identify performance and operational bottlenecks, and translated findings into concrete technical recommendations for customers.• • Led technical investigations and resolution of escalations for large cloud and data center customers, coordinating interdisciplinary teams and acting as the primary technical point of contact.• • Designed and implemented performance analysis services with a focus on automation, scalability, and repeatability, including automated data collection and report generation using container-based tooling.• • Developed custom automation and evaluation tools using PowerShell, PowerCli, Perl, Bash, SQL, VB.Net and Python to support infrastructure analysis, monitoring, and operational decision-making.• • Planned and delivered technical presentations, workshops, and detailed result briefings for customers, partners, and internal teams, adapting depth and structure to different stakeholder audiences.• • Supported customer accounts over extended periods by contributing to continual service improvement initiatives and mentoring teams responsible for ongoing service delivery.
- Hewlett-PackardTechnical ConsultantTECHApril 2006 - Juli 2009 (3 Jahre und 3 Monate)• • Planned, deployed, and implemented Linux-based multi-server archiving solutions for enterprise customers in regulated industries, translating data retention and compliance requirements into concrete technical architectures.• • Supported customer engagements from early technical clarification through implementation, including environment design, system configuration, and operational handover.• • Performed technical presales activities for data retention solutions, contributing architectural input and explaining solution capabilities and limitations to customer stakeholders.• • Collaborated with internal development teams and third-party vendors on API integration topics to enable interoperability between archiving platforms and surrounding systems.• • Designed and delivered technical training sessions and workshops for partners and customers across EMEA, focusing on architecture, deployment, and operational concepts.• • Supported internal enablement by training colleagues in consulting and support teams and assisting with complex troubleshooting and configuration scenarios.
- Hewlett-Packard2nd- and 3rd-leven Support EngineerTECHDezember 1998 - März 2006 (7 Jahre und 3 Monate)Ratingen, Deutschland• • Provided advanced technical support and consulting for enterprise customers on Unix, Linux, Windows, and backup infrastructures, analysing incidents and developing solution approaches tailored to customer environments.• • Took end-to-end responsibility for complex 2nd-level support cases and contributed to 3rd-level escalation handling in close cooperation with development teams.• • Diagnosed cross-system issues involving operating systems, clustering, and backup solutions, documenting root causes and corrective actions for sustainable resolution.• • Handled international customer escalations and technical communication in English, ensuring structured case documentation and transparent progress reporting.• • Designed and delivered technical training sessions for 1 st-level engineers and on-site technicians, focusing on troubleshooting procedures and system behaviour.• • Mentored new colleagues by transferring technical knowledge and supporting their onboarding into complex enterprise environments.r
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Ausbildung und Abschlüsse
- DevOps & Cloud-ComputingIronhack2026Built cloud-native platforms on AWS and Azure using Kubernetes, Terraform and GitOps, implementing automated CI/CD pipelines and DevSecOps practices. Microsoft Azure • Amazon Web Services (AWS) • Kubernetes (AKS, EKS) • Docker • Terraform • Bicep • Ansible • Helm • ArgoCD • GitHub Actions • GitOps • Prometheus • Grafana • Loki • Alloy • Trivy • SonarQube • Checkov • RabbitMQ • Amazon SQS • Agile Development • Scrum • Kanban • DevSecOps • CI/CD
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