Senior System Administrator

Project overview

One of our Clients needs an experienced Linux and Windows Administrator on board.

Project details

immediately

hybrid work from the office in Krakow.

Long-term project.

Experience and Education:

Technical:

• Providing ongoing technical support for applications and IT systems at the L2 and L3 support level.
• Monitoring the availability, performance, and stability of applications and IT infrastructure in production environments.
• Diagnosing and resolving incidents and technical problems related to the functioning of applications and IT infrastructure.
• Analyzing application and system logs to identify the causes of failures and performing Root Cause Analysis (RCA).
• Handling and analyzing monitoring alerts using Grafana, Prometheus, OpenSearch, and Zabbix tools.
• Administration, monitoring, and diagnostics of environments based on Linux and Windows Server systems.
• Technical support for Docker and Kubernetes containerized environments, including diagnostics of clusters, pods, services, and resources.
• Monitoring and maintenance of services and resources operating in the Microsoft Azure cloud environment.
• Verifying the correct operation of applications and business processes by executing SQL queries and analyzing data in databases.
• Handling service requests and incidents in accordance with applicable procedures and established SLA levels.
• Collaboration with development, infrastructure, and business teams in diagnosing and resolving production issues.
• Coordinating the handling of critical incidents and escalating problems to appropriate technical teams.
• Maintaining and updating technical documentation, operational procedures, and knowledge bases using Jira and Confluence.
• Participation in deployment tests, change verification, and monitoring the correct operation of applications after production deployments.
• Performing On-Call technical duties and ensuring the continuity of production system support on a 24/7 basis.
• Education: Higher technical education (preferably in IT, telecommunications, or related fields).
• Experience: Minimum 5 years of experience in a similar position (application support, L2/L3 support, L2/L3 Application Support, or Junior/Mid SRE).
• English language: Knowledge of English at a minimum B2 level (fluent communication in speech and writing, reading technical documentation).
• Operating systems: Practical knowledge of administration and maintenance of Linux and Windows Server environments.
• Containerization and orchestration: Practical knowledge of Docker and Kubernetes tools (administration, diagnostics, verification of cluster resources and states).
• Monitoring and Observability: Very good knowledge of monitoring and analysis tools: Grafana, Prometheus, OpenSearch, Zabbix.
• Cloud: Knowledge of cloud concepts and services (Microsoft Azure).
• Databases: Knowledge of SQL (writing verification queries, analyzing application data).
• Diagnosis and analysis: Ability to read and analyze application and system logs to quickly identify the causes of failures (Root Cause Analysis).
• Work tools: Knowledge of tools for managing tickets and documentation (Jira, Confluence).
• Start: ASAP
• Remote: hybrid
• Location: Kraków, PL
• Rate: 100-150 EUR/h
• Languages: Polish, English