Over 50,000 customers globally trust our end-to-end, cloud-driven networking solutions. They rely on our top-rated services and support to accelerate their digital transformation efforts and deliver unprecedented progress. Become part of something big with Extreme! As a global networking leader, learn why there is no better time to join the Extreme team. POSITION DETAILS Title of position: Senior QA Software Engineer Position type: Full time Location: Thornhill, Toronto, Canada Position reports to: Senior Manager of Software Systems Engineering Application deadline: Applications are being accepted on a rolling basis and this posting will remain open until filled. Work authorization: Applicants must have legal authorization to work in the country where the role will be performed. REQUIRED SKILLS & EXPERIENCE: * 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.   GOOD TO HAVE * 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)   EQUAL EMPLOYMENT OPPORTUNITY 1. Extreme Networks, Inc. is an Equal Opportunity Employer. Qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability, or status as a protected veteran. We are committed to taking affirmative action to employ and advance in employment qualified protected veterans, including disabled veterans, recently separated veterans, active-duty wartime or campaign badge veterans, and Armed Forces service medal veterans. 2. Extreme Networks also strives to prevent other, subtler forms of inappropriate behavior (for example, stereotyping) from ever gaining a foothold in our organization. Whether blatant or hidden, barriers to success have no place at Extreme Networks. We encourage people from underrepresented groups to apply. BENEFITS AND TOTAL REWARDS: Extreme Networks offers a comprehensive benefits package. Specific benefits vary by country and may include: * Medical, dental, and vision insurance * Flexible work schedules and work-from-home opportunities where role permits * Paid time off, including open time off in eligible markets and statutory leave in all markets * Paid holidays in accordance with local practice * Retirement savings programs, including RRSP matching in Canada * Employee Stock Purchase Program, where eligible * Employee assistance program * Tuition reimbursement, where eligible Benefits eligibility is based on country of employment, role, and employment status. Complete benefits details will be provided during the interview process and in the formal offer of employment.