Skills : Perl · Understand legacy codes/debug and development · Adding features to existing Perl modules · Building custom monitoring or alerting scripts for network events Linux · Networking and security fundamentals: TCP/IP, firewalls (iptables/nftables) · Subnetting, routing, NAT, VLANs, Virtual IP · Network Monitoring & Troubleshooting · Understanding of failover strategies and redundancy · SSH, Bash scripting · Configuration management tools (Ansible) Database (mysql/postgress) · Strong understanding of database performance tuning, indexing, and query optimization · Understanding of Galera Cluster concepts and synchronous replication · Monitoring and managing replication lag, failover, and recovery procedure Python · load-balancers (HAProxy, NGINX) · Strong Containerisation skills (Docker) Good to have: · Experience in setting up DNS service · Build and manage Gitlab CI/CD pipeline · Monitoring/logging/alerting: Prometheus, Grafana, Nagios · Reporting/scheduling: Apache Airflow · Knowledge of security best practices, vulnerability scanning
