Maxim Cujba

• Designing, implementing and configuring of two L3-switches in core of  OMD Office LAN (two Cisco Catalyst 4507R for redundancy instead of  one old HP switching equipment). OSPF implementation in OMD local network infrastructure (two 4507R + two 7206VXR + one 3662 in the same OSPF area). 
• Designing and implementing a transport (routing segment) for OMD POS (points of sale) in Republic of Moldova across the  PDH transport network (E1 channelized),  RAD E1 multiplexers and small Cisco routers (1841 model) for the last mile connection.
• Maintenance of the small routing platform to provide interconnectivity between OMD and Chisinau’s city Banks DCs using a Frame-Relay transport (Frame Relay encapsulation, RFC1490).
• Maintenance of the small routing platform to provide interconnectivity with Alcatel BSC’s 2G supervision network using a X.25 over TCP/IP protocol (XOT, RFC1613) as well as 3G BSC’s and MFS’s supervision network over TCP/IP (Cisco 3600 and 2800 series). Redundancy was implemented.
• Maintenance of  PIX 515E (used in OMD as Firewall and VPN platform). Attaching a second unit in the cluster with this first one to provide redundancy (Cisco failover through the serial cable for Active-Standby failover ). Managing the ACLs and Security Polices for DMZ servers against DoS attacks.
• Implementing a traffic filters using Standard and Extended access-lists and Policy-Based Routing (PBRs) for overlapping destination prefixes in core LAN L3 Cisco switches.
• Maintenance of  UNIX OS based servers for LAN and DMZ applications as well as applications based on this server OS (BIND, DHCP, Apache, Sendmail, Samba, FTP and others).
• Designing, implementing and configuring  Wi-Fi access projects for Orange guests based on ZyXEL hotspot to provide tickets with individual credentials for Internet services through WEB authorization on hotspot (like as in the some hotels or airports till now in Moldova).
• Designing, implementing and configuring a small Dial-Up Access project to provide Call-Back Remote Access for a restricted group of OMD employers (Managers, Network Administrators and Engineers) based on TACACS+ server.
• Responsible for updating of documentation of the entire office LAN network infrastructure (L1, L2 and L3 network schemas in Visio) as well as maintenance of IP allocation table for internal LAN infrastructure. ü  As backup for UNIX Admin guy in NSE team I was responsible for installing, configuring and maintenance RHEL, Ubuntu and  FreeBSD OSs on hosts as well as the maintenance of a lot of office LAN application/services (such as DHCP, DNS, SMTP/POP3, SQUID, Reverse-proxy, Syslog and other applications) which are running on those hosts.
• Responsible for the first implementation of IPv6 into OMD NS and WEB services (ns.orange.md & orange.md IPv6 hosts) as well as IPv6 routing .
• Implementing, configuring and maintenance of an Firewall cluster based on two Fortinet FG-310B chassis to provide policy based filtering between Orange GIN (Group Internal Network) and OMD infrastructure.
  

• Kept up-to-date on new developments in computer and network vulnerabilities, data hiding and encryption.
• Upgraded and expanded network systems and their components.
• Reviewed logs for all networking devices for unresolved abnormalities and problems.
• Communicated with vendors to resolve network outages and periods of reduced performance.
• Troubleshot and maintained all networking devices and infrastructure across the enterprise including switches, routers and firewalls.
• Monitored 200 company-wide trouble ticket queues.
• Incorporated feedback and recommendations from other staff members when modifying software.
• Monitored system logs for all company computers and devices to maximize uptime.

• Ensure functionality and service of equipment installed in network points.
• Creating and implementing network development strategies using equipment:

      - Ethernet (Cisco, Juniper, Huawei, D-Link, MikroTik, Edge-Core, SNR, 3COM)
      - PON (BDCOM, ELTEX)
      - Servers (DNS, DHCP, Quagga)

• Monitored 500 company-wide trouble ticket queues.
• Implemented and maintained firewalls, series switches and security appliances.
• Reviewed logs for all networking devices for unresolved abnormalities and problems.
• Incorporated feedback and recommendations from other staff members when modifying software.
• Built server systems and installed into racks.

• Ensuring functionality and servicing equipment installed in network nodes
  Ensuring and monitoring the parameters of equipment and services
  Locating and taking measures for removing network incidents of equipment:
  - xDSL (Alcatel, Huawei, Zyxell, IBAS, Iskratel, Siemens, ZTE)
  - Ethernet (Huawei, Cisco, MikroTik)- GPON (Huawei, ZTE)
  - BRASS (Cisco)
  - Servere (DNS, DHCP, Mail, SESM)
• Monitored 25000 company-wide trouble ticket queues.
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• Providing technical support for the Internet and IPTV through xDSL, FTTx and 3G technologies to the company's customers.
• Installed software, modified and repaired hardware and resolved technical issues.
• Provided base level IT support to non-technical personnel within the business.
• Managed call flow and responded to technical support needs of customers.
• Resolved customer issues in a clear, courteous and straightforward manner.
• Described solutions to customers accurately and persuasively.
• Set up PC and Apple desktops and laptops and all types of mobile devices.
• Built and provided basic end-user troubleshooting and desktop support on Windows, Linux and Mac systems.