Must Have Skills: 5 years of experience in DNS operations/support, with at least 2–3 years at L3 level Strong hands‑on experience with BIND (open‑source DNS) Deep understanding of: · DNS protocol internals · Authoritative vs Recursive DNS · TTL, caching behavior, and query resolution flow Strong Linux/Unix system administration experience Strong networking fundamentals: · TCP/IP, UDP · Latency and routing behavior Nice to Have Skills: Experience with Anycast DNS deployments Exposure to other DNS software: Unbound, PowerDNS, Knot DNS Automation and scripting (Shell, Python, Ansible) Monitoring tools: Prometheus, Grafana, Nagios, Zabbix ITIL processes (Incident, Problem, Change Management experience) Requirements