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David Wollner has a diverse work experience in the technology industry. David worked as a Software Developer at MineSense Technologies Ltd., where they provided software support and development using Python, as well as system build automation and troubleshooting. Prior to this, they were a Network Engineer on the Support Team at DRIVENETS, where they provided product support for a US-based Tier 1 ISP and verified routing protocols and product features. David also worked as a Sr. Network and Security Engineer at Cellcom, where they were responsible for high-scale projects in networking, IT security, and data center fields. At Mellanox Technologies, they served as a Sr. Networking and Security Engineer and was responsible for IT security and networking implementation and design. Lastly, they worked at 013 Netvision as a Networking & IP Services Engineer, performing complex network design projects, troubleshooting, and site maintenance, as well as providing technical IT support for enterprise customers. Overall, David has experience in software development, network engineering, security implementation, and technical support.

David Wollner graduated from The Open University of Israel in 2015 with a Bachelor of Science degree in Computer Science. David also holds additional certifications from Cisco, Checkpoint, and Microsoft, including CCIE R&S #23199, CCSE NGX, and MSCE 2003. The specific months and years of obtaining these certifications are not provided.