Application & Infrastructure support

For one of my customer we are looking for a L3 infrastructure support consultant. Location: Buzin, Zagreb Duration: 4+ months renewable Description: Key Missions: - Support L3 teams for complex troubleshooting - Analyze, Troubleshoot, solve tickets escalated by Support L1 teams - Test and deploy software releases/patches - Performs validation test including load, performance, high availability, accuracy and security tests - Investigates issues by analyzing logs during tests execution, reports incidents through configuration management tool and monitors them until closure - Produces / update documents that will allow proper installation, testing, operations and administration - Maintain documentation, troubleshooting guides, and knowledge base articles - Supports the Service Delivery team on specific technical requests - Ensure SLA compliance and timely issue resolution. Key technical skills: - Strong Knowledge in Linux (Linux Red Hat, CentOS, Debian etc.) and Windows 10/11 or Windows Server (2016, 2019, 2022 etc.) - Good relational Database knowledge (MSSQL, PostgreSQL, Oracle, MongoDB) - Good scripting knowledge (Python, PowerShell, Bash) - Good Network (TCP/IP, HTTP) and security (TLS) knowledge, - Basic Knowledge on virtualization (OpenStack, VMware, k8s etc.), - Basic Knowledge of testing and monitoring tools (SOAPUI, Postman, Zabbix, Grafana, Prometheus) - Fluent in Croatian & English required