Application Administrator

5 dagen geleden

Den Haag, Zuid-Holland, Nederland ARHS Voltijd

Job Title: Application Administrator

Job Description:

We are seeking an experienced Application Administrator to join our team at ARHS. The successful candidate will be responsible for the installation, configuration, and administration of applications in production and non-production environments.

Key Responsibilities:

  • Application installation, configuration, and administration in production and non-production environments;
  • Application monitoring, performance tuning, and continuous improvement of the efficiency and quality of service;
  • Performing applications support and maintenance activities such as incident, change, release, and problem resolution;
  • Writing and validating application procedures manuals, including troubleshooting guides, backup, and restore plans;
  • Automating administrative procedures for recurring system administration activities and providing installation and technical support documentation where required;
  • Contributing to the structuring, maintenance, and development of the technical knowledgebase supporting the ICT Operations activities;
  • Reporting on application availability, performance, capacity, and overall usage where required.

Qualifications:

  • Bachelor's degree plus a minimum of 9 years of experience working as an IT professional in mid/large IT infrastructure environments, including deployment, support, and maintenance of applications;
  • Working knowledge of English (level B2 or higher);
  • More than 6 years working as an IT professional in mid/large IT infrastructure environments, including deployment, support, and maintenance of applications;
  • A minimum of 5 years of experience with administration and support of recent operating system versions of Microsoft Windows Servers and/or Red-Hat Linux on enterprise environments;
  • A minimum of 5 years of experience working as an IT professional in the area of application administration, support, and configuration;
  • A minimum of 4 years of experience with DevOps and automated deployment and configuration scripting (e.g., git, Azure DevOps, Python);
  • A minimum of 2 years of experience with configuration management tools for applications (e.g., Puppet);
  • A minimum of 4 years of experience in Kubernetes cluster management and migration;
  • Excellent knowledge of Linux and Windows server-side operating system support and maintenance (RHEL +, Windows 2019+);
  • Excellent knowledge of Linux and Windows server-side application administration and troubleshooting;
  • Excellent knowledge of application containerization, packaging, and deployment on Kubernetes clusters (helm charts, operators, pipelines);
  • Good knowledge of configuration management concepts and technologies (e.g., Puppet);
  • Good knowledge of DevOps principles and best practices (version control, automation, pipelines, improve efficiency, feedback loops, fail fast, etc.);
  • Knowledge of ITIL, including the incident, change, and release management processes;
  • Certification: Certified Kubernetes Administrator (CKA);
  • Certification: Red Hat Certified System Administrator (RHCSA) or Red Hat Certified Engineer (RHCE) (desirable).

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