About 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.
German
Native or bilingual
English
Fluent
Spanish
Basic
Can work on-site
Essen (up to 20km), Marl (up to 30km)
Experience
- Hewlett Packard EnterpriseSenior Technical ConsultantTECHAugust 2009 - October 2025 (16 years and 2 months)Ratingen, Germany• • 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 - July 2009 (3 years and 3 months)• • 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 EngineerTECHDecember 1998 - March 2006 (7 years and 3 months)Ratingen, Germany• • 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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Education
- 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
- VCP DATACENTER VIRTUALIZATION2024VCP DATACENTER VIRTUALIZATION