Hands-on experience in wired networking protocols including VLAN, IP, STP, TCP/UDP, VRRP, OSPF, BGP, MPLS, IS-IS, SPBM OR Hands-on experience in Enterprise Wireless LAN testing and validation.
Solid understanding of network security concepts such as AAA (Authentication, Authorization, Accounting), 802.1X, VPN, Captive Portal, IPsec, and Firewalls.
Strong knowledge of network infrastructure services including DHCP, DNS, RADIUS, LDAP, SSH, and Certificate Authorities.
Hands-on experience with cloud platforms such as AWS, Azure, or GCP.
Strong understanding of cloud-native and distributed systems (microservices, APIs, service communication).
Experience with containerization and orchestration technologies such as Docker and Kubernetes.
Strong knowledge of cloud middleware like RabbitMQ & Kafka.
Proven expertise in triaging, reproducing, and resolving complex customer or field issues in large-scale or production environments.
Familiarity with observability tools (metrics, logging, tracing) such as Prometheus, Grafana, ELK, or Loki.
Strong root cause analysis (RCA) skills across networking, application, OS, and cloud layers.
Experience in building or using AI & automation tools for debugging, log analysis, and issue resolution.
Strong programming & debugging skills in Python, Java, or similar languages.

Familiarity with traffic generation tools such as Ixia or Spirent.
Knowledge of virtualization technologies such as ESX and Hyper-V.
Good communication and collaboration skills to work across development, QA, SRE, and support teams.
Relevant certifications (CCNA, CWNA/CWSP, CompTIA Security+, or cloud certifications)

Applicants must have legal authorization to work in the country where the role will be performed.
Benefits eligibility is based on country of employment, role, and employment status.

Extreme Networks is hiring a Senior QA SW Engineer -Toronto, Canada (10302)