Austin Byun

• Company Overview: Forever21.com
• Working for ecommerce including head quarter, cloud, data center to build, configure, maintain, manage, upgrade, and optimize existing and new network devices (Nexus 7K, ACI, Firepower, FMC, Meraki, Azure Cloud, AWS Cloud, MuleSoft, F5, Juniper SRX, Cloudflare DNS, etc)
• Performed day-to-day LAN and WAN administration, maintenance, and support.
• Identified and immediately resolved issues with network devices.
• Installed, configured and supported local area network (LAN), wide area network (WAN) and Internet system.
• Managed data backups and disaster recovery operations to comply with business continuity initiatives.
• Established comprehensive network documentation to facilitate rapid issue resolution when troubleshooting problems.
• Monitored system performance and responded to alerts.
• Improved network efficiency by implementing and managing system updates and patches.
• Managed vendor relationships to negotiate favorable contracts for hardware procurement while maintaining budgetary requirements.
• Diagnosed and resolved hardware and software issues.

• Worked for public schools in LAUSD to configure, upgrade, optimize, and test new WLAN network equipment (Aruba WLC 7510, Aruba AP 250 and 240, and HP A5500 and A5120 switches, and Cisco ISR 4400)

• Primarily consulted with online gaming customers to provide networks solutions practices, involving creation of systems, network and rough platform configuration designs and guidelines
• Assisted, administrated, modified, and troubleshot a customer’s network environment

• Company Overview: https://www.z8games.com/
• Responsible for administrating, modifying, and troubleshooting network environment in worldwide online gaming service colocation (Brazil, US, Canada, Germany, etc)
• Configured and handled multi-homing BGP and GRE tunnel environment with XO, Savvis, Peer1, Q9, UltraNet, and Telecity BGP circuits (Cisco ASR 1K1, Nexus 5548UP, ISR 1941, ASA5545, ASA5545X, Cisco 2960, Juniper Mag2600, MX, SRX, EX 4200, Fortinet AP, etc)
• Administrated, configured, and troubleshot virtualization environment such as UCS FI, UCS Chassis Blade Servers, EMC VNX5200 and 5300, and VMAX
• Installed and Configured Corero IPS5500 as IPS, and F5 BIG L4 as a load balancers
• Implemented and supported virtualization under more than 400 servers such as VMware Guest OS servers
• Established Juniper MAG VPN environment (site to site vpn, IPSec, SSL, WSAM, etc.)

Company Overview: US Netmarble (https://company.netmarble.com/en/studio/list)

• Responsible for a full range of installing, designing, administrating, modifying, troubleshooting network WAN/LAN/WLAN environment, and turning up and operating Level3 and Cogent BGP circuits under cisco network systems (Cisco 6509e, ASA5510, FWSM, cisco 3560, and 2960), IBM GX5108SFP-V2 as a IDS, Alteon 2424 SSL as a load balancer
• Implemented, configured, managed and supported 100 servers such as HP DL380 and 360 G7 and G8 Servers including direct attached storage HP D2700 series and running scripts for automation from visual basic / power shell
• Maintaining and troubleshooting all aspects of small and medium size office network and desktop environment including VPN (site to site and client vpn), office firewall, office domain AD, DNS, group policies, IT inventories management, IT contract, IT routine billing, printer, shared folder, and business email
• Acted as IT technical contractor, reviewing and negotiating all IT gaming service resources such as ISP (Level3, Cogent, TW Telecom, etc), ESP (StrongMail), CDN (Akamai and Limelight), P2P (Pando Downloader), Colocation (Equinix, Level3, etc)

• Company Overview: https://gocashgamecard.net/
• Responsible for installing, administrated, and maintaining online gaming payment system network environment (LAN/WAN, cisco ASA 5520, 3560, 2960, Alteon 3408 as a load balancer)
• Administrated and maintained prepaid online gaming card servers (Sun Fire X4150 and X4450 Servers) and Veritas HA DB solutions
• Supported and maintained all aspects of office infrastructure network system of AD, DC, DNS, GPO, and business email
• Served as a technical lead on all capacity of IT plan and IT project management

• Performed all aspects of design, plan, estimate, and specific schedule in telecommunications and network systems layout
• Designed, installed, and maintained network systems, telecommunications equipment, cabling, and associated circuits for voice and data with wide variety from DS0 level to DS3 level
• Turned up and operated traditional TDM switched circuits (DS1, DS3, ISDN-PRI, E1, and SS7), and VoIP connectivity with cisco network systems (cisco AS5300, AS5400, ASA5505, and 2612)

• Designed telecommunications network system, planned T-1 layout, and made specific schedule to install all required equipment, cabling and telecommunication and VoIP gateway equipment
• Operated and administrated also extendable H.323 protocol VoIP solutions to make an alternative switching functionality- Troubleshot technical matters with Telco engineers from ICG, SBC, PaeTec, Dacom, World One, etc to turn up T-1 circuits and support long distance call service
• Low Voltage Construction Project (High Tech Construction Project – LAUSD, CSUN)