Linux Support Engineer

Who is Hiring; Polska; On-site; PLN 120,000 - 180,000; Full time

Job summary

Who is Hiring is seeking an experienced IT Operations and Technical Support specialist in Poland. The role focuses on Linux-based application support, system monitoring with Grafana, and incident management to ensure high availability.

You will analyze alerts, perform root cause analysis, and collaborate with engineering and client teams to drive improvements, on-call readiness, and adherence to SLA-driven processes.

Qualifications

• 5+ years in Technical Support, Application Support, or Infrastructure Operations.

Responsibilities

• Provide L1/L2 technical support for Linux-based applications and infrastructure.

Skills

Linux troubleshooting

Log analysis

Troubleshooting

Incident management

Documentation

On-call support

SLA-driven operations

Communication

Education

Tools

Grafana

Job description

Key Responsibilities

• Provide L1/L2 technical support for Linux-based applications and infrastructure.
• Monitor application and system health using Grafana and other observability tools.
• Analyze alerts, investigate incidents, and perform root cause analysis for recurring issues.
• Troubleshoot application, operating system, networking, and performance-related problems.
• Support deployment, configuration, maintenance, and upgrades of enterprise applications.
• Review logs, metrics, and system events to identify and resolve service-impacting issues.
• Drive incident, problem, and change management activities in accordance with ITIL practices.
• Document troubleshooting procedures, knowledge articles, and operational runbooks.
• Collaborate with engineering, infrastructure, and client teams to ensure high system availability.
• Participate in on-call support and major incident management as required.
• Continuously improve monitoring, alerting, and operational processes.

Must-Have Skills

• 5+ years of experience in Technical Support, Application Support, or Infrastructure Operations.
• Strong hands-on experience with Linux server troubleshooting.
• Experience using Grafana for monitoring, dashboarding, and alert investigation.
• Excellent technical troubleshooting and analytical problem-solving skills.
• Experience with log analysis and system diagnostics.
• Strong understanding of networking concepts including: TCP/IP DNS DHCP SSL/TLS VPN and connectivity troubleshooting Experience working in production support environments with SLA-driven operations.
• Strong documentation and communication skills.
• Highly process-driven with demonstrated adherence to operational procedures and support workflows.

Good-to-Have Skills

• Healthcare IT experience.
• Knowledge of DICOM, HL7, and healthcare interoperability standards.
• Experience supporting PACS , VNA, Radiology, or Medical Imaging platforms.
• Exposure to healthcare workflows and clinical systems.
• Knowledge of monitoring and observability best practices.
• Experience with cloud platforms and containerized environments.