Cristian Tozaru | Elance
 
176985602337900
Last Sign-in: Jul 22, 2013

Cristian Tozaru

IP network and storage engineer
   Romania
  |   Bucharest, Bucharest
  |  9:28 am Local Time

Resume/C.V.

I have over 4 years of working experience in IP networks, bundled with storage networks/systems, system administrator, and other IT related jobs. I have experience in all the aspects of the job project planning, design, implementation, troubleshooting, maintenance. Also i have experience in both execution position and team leader position, being involved in budget management.
Service Description
I can place my working experience in networking/system administration at the clients disposal in order to provide the best outcome in any project they require assistance.

I also have certifications that are built upon experience. Certifications like CCNA, CCNP (Route, Switch, TSHOT).

I am placing some bits of my CV in order to have a better look of what i can help clients with.

Network Administrator
• Manage the whole aspects of the data network (both LAN/WAN, User network/Datacenter network). Design, configure, troubleshoot and improve the networking equipments, infrastructure and solutions;
• Working experience with Cisco equipments 1812, 2960, 3750, 4750, 7200, 7200-VXR, 6500, Nexus 1000v;
• Working experience with the following technologies among others: Dark fiber with CWDM, VSS, HSRP, EIGRP, BGP, IPSec and GRE tunneling, STP/RSTP, L2 securing technologies;
• Manage shaping and policing rules for branches traffic in order to improve application availability;
• Manage the Storage Area Network and the Storage equipments;
• Working experience with Cisco MDS9500 switch fabric, Storage equipments: EMC CX4-480 with the following technologies among others: SAN Copy, Mirroring, SnapShot;
• Propose, compile and check firewall rules for both external (DIrty LAN -> DMZ) and internal firewalls (DMZ -> Trusted LAN);
• Manage Load balancers for critical applications using Cisco CSS 11500 series , and ACE 4710;
• Work within a change management environment regarding important network implementations;
• Create, elaborate, renew network design certifications approved by the ING group approval board;
• Manage Proxy traffic, for both HQ and branches. Manage ISA proxy and BlueCoat ProxySG access rules and filters for HQ and branches;
• Manage DNS;
• Manage some aspects of the mail delivery/filtering flow;
• Mainly 3rd level support but also, where needed, 1st and 2nd level support is provided;
• Identify and resolve problems and restore services to the user in a timely and efficient manner with minimum disruption to the user/clients;
• Additional nexus 7k, 5k, 2k knowledge acquired through a week hands on course from Cisco;

Senior System Administrator
• Configure/Troubleshoot/monitor company’s network, both inter and intra location, manage BGP sessions/configurations, ACL’s, tunnels, DMZ’s, create/manage configuration backups (Cisco routers (7200), Cisco switches (6500 series, 2900 series, 3750 series), Cisco PIX)
• Migrate between Internet Service Providers for various locations
• Manage the companies public IP block, creating routing objects, reconfigure ip announcements in BGP for different locations
• Reconfigure the network to fit the growing needs of the business and future projects. Research, propose and advise various solutions (logical and technical) for branch/datacenter’s WAN connections, with various IGP solutions (EIGRP, iBGP, OSPF).
• Manage Cacti Monitoring tool for all Cisco equipments and deal with ISPs traffic reports.
• Manage firewalls, fix traffic transfer issues, and propose security improvements;
• Administer users’ accounts according to procedure (Windows domain, Linux machines);
• Administer Windows Domain, create backups, maintain Domain policies, define new restrictions;
• Monitor, upgrade and troubleshoot email system, upgrade and improve promotional email processing. Also create, upgrade, monitor, and troubleshoot the invalid emails removal system (the email filtering part). Monitor and resolve, if necessary, email reputation throughout the internet (both operational and promotional emails).
• Manage backup systems, monitor backup processes, define new backup jobs; maintain up to date documentation on backups, both Linux based and Windows based, also RANCID for Cisco equipments.
• Keep up to date the antivirus server and clients, define and monitor periodic scans, create periodic reports;
• Run periodic network scans, report results, propose security improvements;
• First and second level of support/contact for any IT technical issue in the company;
• Manage ISA servers access rules and filters;
• Manage server preparations for relocation (database relocation for websites)
• Identify and resolve problems and restore services to the user in a timely and efficient manner with minimum disruption to the user;

Skills and competencies:
• Cisco IOS, CatOS, PIX, ASA operating systems for switches and routers, ASDM
• Networking concepts and protocols (TCP/IP, RIP, EIGRP, OSPF, BGP, Tunnels, VLANs, RSTP/STP, Subnetting, MPLS, VPN, etc...)
• Storage knowledge, both storage sistems/technologies and switch fabric configuration design.
• Windows domain services (DNS, Active Directory)
• Red Hat Linux administration and services (RPM, Cron, Shell-Scripting, etc )
• Email subsystems and protocols (SMTP, IMAP, POP)
• Enterprise applications and services (Symantec Antivirus Suite, Veritas Backup Exec, Postfix MTA, Apache / IIS HTTP Servers, etc)
• Proxy servers (Microsoft ISA, BlueCoat ProxySG)
Certifications
Self-study
CCNP – Switch Certified
Awarded: 2011
InfoAcademy, Bucharest, Romania
CCNP – Route Certified
Awarded: 2010
InfoAcademy, Bucharest, Romania
CCNA
Awarded: 2008
Education
Electronics Telecommunication and Information’s Te
Bachelor of Science in Microelectronics
2003 - 2008
Employment
ING Bank Romania
Network Engineer
2011 - Present
• Manage the whole aspects of the data network (both LAN/WAN, User network/Datacenter network). Design, configure, troubleshoot and improve the networking equipments, infrastructure and solutions; • Working experience with Cisco equipments 1812, 2960, 3750, 4750, 7200, 7200-VXR, 6500, Nexus 1000v; • Working experience with the following technologies among others: Dark fiber with CWDM, VSS, HSRP, EIGRP, BGP, IPSec and GRE tunneling, STP/RSTP, L2 securing technologies; • Manage shaping and policing rules for branches traffic in order to improve application availability; • Manage the Storage Area Network and the Storage equipments; • Working experience with Cisco MDS9500 switch fabric, Storage equipments: EMC CX4-480 with the following technologies among others: SAN Copy, Mirroring, SnapShot; • Propose, compile and check firewall rules for both external (DIrty LAN -> DMZ) and internal firewalls (DMZ -> Trusted LAN); • Manage Load balancers for critical applications using Cisco CSS 11500 series , and ACE 4710; • Work within a change management environment regarding important network implementations; • Create, elaborate, renew network design certifications approved by the ING group approval board; • Manage Proxy traffic, for both HQ and branches. Manage ISA proxy and BlueCoat ProxySG access rules and filters for HQ and branches; • Manage DNS; • Manage some aspects of the mail delivery/filtering flow; • Mainly 3rd level support but also, where needed, 1st and 2nd level support is provided; • Identify and resolve problems and restore services to the user in a timely and efficient manner with minimum disruption to the user/clients; • Additional nexus 7k, 5k, 2k knowledge acquired through a week hands on course from Cisco;
Nobel Romania
Senior System Administrator
2009 - 2010
• Configure/Troubleshoot/monitor company’s network, both inter and intra location, manage BGP sessions/configurations, ACL’s, tunnels, DMZ’s, create/manage configuration backups (Cisco routers (7200), Cisco switches (6500 series, 2900 series, 3750 series), Cisco PIX) • Migrate between Internet Service Providers for various locations • Manage the companies public IP block, creating routing objects, reconfigure ip announcements in BGP for different locations • Reconfigure the network to fit the growing needs of the business and future projects. Research, propose and advise various solutions (logical and technical) for branch/datacenter’s WAN connections, with various IGP solutions (EIGRP, iBGP, OSPF). • Manage Cacti Monitoring tool for all Cisco equipments and deal with ISPs traffic reports. • Manage firewalls, fix traffic transfer issues, and propose security improvements; • Administer users’ accounts according to procedure (Windows domain, Linux machines); • Administer Windows Domain, create backups, maintain Domain policies, define new restrictions; • Monitor, upgrade and troubleshoot email system, upgrade and improve promotional email processing. Also create, upgrade, monitor, and troubleshoot the invalid emails removal system (the email filtering part). Monitor and resolve, if necessary, email reputation throughout the internet (both operational and promotional emails). • Manage backup systems, monitor backup processes, define new backup jobs; maintain up to date documentation on backups, both Linux based and Windows based, also RANCID for Cisco equipments. • Keep up to date the antivirus server and clients, define and monitor periodic scans, create periodic reports; • Run periodic network scans, report results, propose security improvements; • First and second level of support/contact for any IT technical issue in the company; • Manage ISA servers access rules and filters; • Manage server preparations for relocation (database relocation for websites) • Identify and resolve problems and restore services to the user in a timely and efficient manner with minimum disruption to the user;
NobelTel Romania
Junior System Administrator
2008 - 2009
• Troubleshoot Local Area Network and Telephony network, and adjust configurations of network equipments according to needs (Cisco routers, Cisco switches, Cisco PIX) • Manage firewalls, report issues and propos security improvements; • Administer users’ accounts according to procedure (Windows domain, Linux machines); • Administer Windows Domain, create backups, maintain Domain policies, define new restrictions; • Monitor, upgrade and troubleshoot email system, upgrade and improve promotional email processing; • Manage backup systems, monitor backup processes, define new backup jobs; Maintain up to date documentation on backups; • Keep up to date the antivirus server and clients, define and monitor periodic scans, create periodic reports; • Run periodic network scans, report results, propose security improvements; • First point of contact for any IT technical issue in the company; • Manage ISA servers access rules and filters; • Identify and resolve problems and restore services to the user in a timely and efficient manner with minimum disruption to the user;
NobelTel Romania
Routing Supervisor & NOC operator
2008 - 2008
I lead a 3 men shift that monitors the network. I was making sure the daily tasks are done in the most efficient and correct way, while completing my own tasks at the same time. Detailed quality and connectivity targets needed to be reached through various detailed carrier analysis. As NOC I provide full time support on escalating technical issues, following up the troubleshooting and reporting the timelines and results. Fist level of support for various carriers troubleshooting.
Routing Operator (trainee, junior, senior)
NobelTel Romania
2006 - 2007
Calls quality and connectivity monitoring throughout the network, improving them where possible. Making daily/weekly traffic indicators reports, in order to analyze the areas where they could be improved.
OPEN PUBLIC SERVICES. Bucharest, Romania
Phone Operator
2006 - 2006
Gather information about various points of interest (location database, construction information)
Computer / Electrical Network Technician
PHONES INVEST S.R.L. Bucharest, Romania
2006 - 2006
Implementation of electrical and computer networks in various domestic / commercial buildings, enforcing the most up to date standards throughout the industry.
Payment Terms
Can be negotiated
Cristian Tozaru | Elance

Cristian Tozaru