L3 Support Engineer DNS
Core
L3 escalation point for complex DNS incidents impacting production services, diagnosing critical outages, performance degradation, and security issues.
Role type
Senior L3 Support Engineer (DNS)
Builds
Authoritative and recursive DNS infrastructures
Domain
Networking / DNS
Deliverable
client delivery
Required skills
DNS protocol internals, BIND, Linux/Unix system administration, TCP/IP, UDP, latency and routing behavior, root cause analysis (RCA), incident management, change management
Preferred skills
Anycast DNS deployments, Unbound, PowerDNS, Knot DNS, automation scripting (Shell, Python, Ansible), monitoring tools (Prometheus, Grafana, Nagios, Zabbix)
Technologies
BIND, Unbound, PowerDNS, Knot DNS, Prometheus, Grafana, Nagios, Zabbix, Shell, Python, Ansible
Responsibilities
Act as L3 escalation point for complex DNS incidents impacting production services, Diagnose and resolve critical DNS outages, performance degradation, and security issues, Provide expert support for authoritative and recursive DNS infrastructures, Work closely with L1/L2 teams, NOC, and Core Network teams to restore services quickly, Perform deep troubleshooting of BIND, Lead root cause analysis (RCA) for major incidents
Seniority
Senior, hands-on IC
