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System Administrator (Security & Infrastructure)

On-siteBanking & Finance

KeyteoLuxembourgPosted on 1 octobre 2026View the original ad on ictjob.lu

360 – 800 €/jSign up to apply

About this mission

Technical environment

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.

Skills

SIEM

Key information

LocationLuxembourg
RemoteOn-site
Daily Rate360 – 800 €/j
Required experience5+ years
SectorBanking & Finance
LanguagesFR · EN

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