24.11.2025 aktualisiert
100 % verfügbar
Senior DevOps / Platform Engineer & Team Lead
Stuttgart, Deutschland
Stuttgart +50 km
Self-educated in Linux engineering, DevOps, security engineering, and distributed systemsÜber mich
Senior DevOps / Platform Engineer & Team Lead with 20+ years of experience in enterprise infrastructure, large-scale observability, SIEM engineering and automation.
Skills
PHPAmazon Web ServicesAutomatisierungMicrosoft AzureBash ShellKundenbeziehungsmanagementCloud ComputingComputerprogrammierungContinuous IntegrationLinuxDevOpsElasticsearchMitarbeiterbindungFehleranalyseFreeBSD
Led small engineering teams. Built petabyte-scale Elastic platforms, high‑throughput log pipelines, and global Windows/Linux log ingestion for tens of thousands hosts. Strong CI/CD, security and troubleshooting background. Based in Germany, available immediately for contract roles (remote/hybrid).
About experience:
- Full setup from scratch to a petabyte-scale Elasticsearch clusters with 300+ nodes.
- Deploy and support geo-redundant Splunk clusters with 20+ nodes.
- Supporting log collection infrastructure for thousands of hosts and network devices.
- Apologist for IaC practice: GitLab CI, GitHub Actions, Jenkins, Terraform, Ansible
- Power Zabbix Administrator: Elasticsearch auto-healing, tenant resource budgeting and automation.
- Build data pipelines with Logstash, Kafka, Vector, Elastic Beats, WEC, Syslog, Fluentd and Fluentbeat.
- Experience in Web3 projects (Blockchain infrastructure, DAO operations, Smart Contract integration).
- Hands-on experience with AWS, GCP, Azure cloud platforms
- Bash, Python, PHP, Powershell scripting skills
- Professional administration Linux, FreeBSD, Windows host infrastructure
- Great experience with on-premise virtualization technologies like VMware, KMS, Xen
- Have experience of container orchestration systems like K8S, Nomad, Docker Swarm
- Certified cybersecurity specialist
- Strong team player
Erfahrung
Berufserfahrungmehr als 10 Jahre
Freelancer seit2023
Sprachen
Englischgut
Projekthistorie
- Design, deployment and optimization of Elasticsearch / OpenSearch clusters for large-scale log and security analytics.
- Development and maintenance of SOC log pipelines, including WEC-based Windows event ingestion, Kafka routing, and alerting flows.
- Implementation of observability architectures: metrics, logs, dashboards, alerting, retention planning.
- Incident analysis and support for security operations teams, including log correlations and detection tuning.
- Development of CI/CD automation for infrastructure components (Ansible, GitLab CI, Jenkins).
- Linux system engineering: performance tuning, troubleshooting, service hardening.
- Integration of Zabbix monitoring with SIEM/observability platforms.
- Architecture consulting for clients on platform scaling, reliability, and data retention.
- Documentation, knowledge transfer, and technical guidance for engineering teams.
Led teams of 5-7 engineers in SOC & DevOps functions. Designed and operated Elastic clusters with 300+ nodes and petabyte-scale retention. Architected log ingestion for 20,000+ Windows endpoints using WEC + Kafka. Built and maintained Kafka clusters for ingestion pipelines. Implemented Zabbix monitoring and integrated alerting with Elastic SIEM stacks. Developed CI/CD pipelines using GitLab CI and Ansible automation. Performed advanced Linux troubleshooting, scaling, tuning, and failure analysis. Migrated enterprise from legacy systems to Elastic-based observability. Migrated enterprise SIEM from ArcSight to Elastic Stack (100+ sources). Maintained Splunk SIEM clusters 20+ nodes. Handled mission-critical incident response and outage recoveries.
Led 5+ engineers and contractors delivering B2B infrastructure projects. Built secure remote-work infrastructures (RDP, VDI, centralized access). Designed geo-distributed VPN networks using Cisco, Mikrotik, and Linux appliances. Built Zabbix monitoring stacks for SMB and mid-size customers. Developed infrastructure for startup clients (automation, hosting, backend). Created integrated hardware+software solutions on ARM/RISC architecture. Managed manufacturing workflows: PCB outsourcing, sourcing from China, QA, deployment.