System Administrator - Security and Infrastructure

Technical Skills Deploy and maintain SIEM technologies - Elastic on premises Including log ingestion pipelines with Vector or the Elastic agent Deploy and maintain Prometheus and Grafana Including alerting system monitoring rules with Prometheus, and visualization graphs with Grafana Manage multiple Linux systems via Ansible AWX playbooks (deployed in master server with Kubernetes), including OS updates and scalability needs. Manage and maintain Docker containers, including volumes, networks, and configuration files Generate and manage local TLS certificates and mutual TLS client certificates, ensuring proper lifecycle management and timely client notifications using open-source tools Configure and manage reverse proxies, such as Caddy or Nginx Deploy and manage SQL databases (e.g., PostgreSQL and PGadmin) Configure and manage mail agents (e.g., MSMTP and Postfix) Deploy and manage additional open-source tools to support Incident Response operations Language Skills English (minimum B1 level CEFR, both oral and written) Interpersonal Skills Reliability: Respect standard University working hours and provide regular, concise progress updates, such as daily summaries. Curiosity and motivation: Investigate improvements beyond the minimum requirements while making pragmatic scope decisions. Loyalty to objectives: Propose alternatives constructively, but follow agreed decisions when proposals cannot be accepted, including for non-technical reasons. Consistency and discipline: Remain focused on the defined goal, document progress and decisions, and maintain reproducible work. Communication: Ask questions or request assistance promptly when requirements, access, or technical constraints are unclear.