Support Engineer L3

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)