RAJASEKAR SIVARAJ, System & Network Administrator

RAJASEKAR SIVARAJ

System & Network Administrator

Unitra International LLC

Location
United Arab Emirates - Dubai
Education
Bachelor's degree, Electronics & Communication
Experience
16 years, 3 Months

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Work Experience

Total years of experience :16 years, 3 Months

System & Network Administrator at Unitra International LLC
  • United Arab Emirates - Dubai
  • My current job since June 2015

Tracking the administration of multiple disjoint Active Directory Forests, Domains, DHCP, DNS and various other infrastructure services
• Telephony system migration from Samsung to Cisco IP Phones
• Guiding the Helpdesk & Desktop Support Team which support Windows 2012, XP and Windows 7, 8 & 8.1 along with the MS-Office including mail services
• Managing and updating third party vendor contracts and AMC maintenance contracts in SA manage
• Ensure all the incidents, problem are logged into SA manage and resolved as per SLA
• Working with IT manager to define requirements related to change requests and problem management in SA manage
• Weekly, monthly report generating in SA manage and analyzing to improve the performance of the system and team.
• Supervise all daily/weekly scheduled activities and design; implement preventive Maintenance for all IT hardware & Software.
• Supervising Wide Area Network (WAN) / Local Area Network (LAN) connectivity and delivering WAN / LAN engineering support
• Coordinating with ISPs for any network related issues, requests or cancellation

Senior Network Administrator at Prime Healthcare Group LLC
  • United Arab Emirates
  • January 2009 to May 2015

Role:
• Overseeing the overall gamut of tasks related to network architecture and ensuring the availability of IT services, Active Directory user account & high quantity of data server connection
• Addressing the troubleshooting hardware, software and connectivity issues for a Mac & Windows 7 professional and mainframe environment
• Supervising Wide Area Network (WAN) / Local Area Network (LAN) connectivity and delivering WAN / LAN engineering support
• Monitoring the configuration of Cisco Routers (Platform: 2800, 2911 & 2921), Cisco Switches (Platform: Cat 2960, Cat 3560 & Cat 3750), VOIP Protocols H.323, MGCP, SIP, SCCP, Phone Button / Soft Key / Phone Button Template
• Evaluating the service options, infrastructure configurations and ongoing support requirements to improve system reliability and maintain operations metrics
• Coordinating with ISPs for any network related issues, requests or cancellation
• Handling the configuration and troubleshooting of IPSEC VPN and VLANs
• Facilitating the deployment of Cisco IP Phones - Series: 7940, 7942, 7960, 7961, 7912, 7821, 6921, etc
• Managing the complete system builds, upgrades, migrations, code deployments and patch management
• Delivering design, implementation, administration and support of Windows 2012 Active Directory and Windows NT Legacy Domain
• Tracking the administration of multiple disjoint Active Directory Forests, Domains, DHCP, DNS and various other infrastructure services
• Guiding the Helpdesk & Desktop Support Team which support Windows 2012, XP and Windows 7, 8 & 8.1 along with the MS-Office including mail services
• Accountable for installing and configuring;
o Exchange 2007 to 2013, Door Access Controls & CCTV and SQL Server 2012
o Windows Server 2012 Hyper-V virtualization & CUCM cluster with integration with inter-cluster trunking
• Furnishing timely resolutions to support mission critical application users

Accomplishments:
• Played a key role in turning-around under-performing project titled Prime Hospital LLC as a profitable venture
• Attributed the specific expertise for each team member across WAN network and built a supporting training series to address knowledge gaps
• Implemented MRTG measures to enhance the network performance by 90%
• Engaged in troubleshooting network issues related to system builds, upgrades and migrations

Network Engineer at Hathway Broadcom
  • India
  • January 2008 to December 2008

Furnishing timely resolutions to support mission critical application users
Accomplishments:
* Played a key role in turning-around under-performing project titled Prime Hospital LLC as a profitable venture
* Attributed the specific expertise for each team member across WAN network and built a supporting training series
to address knowledge gaps
* Implemented MRTG measures to enhance the network performance by 90%
* Engaged in troubleshooting network issues related to system builds, upgrades and migrations

Education

Bachelor's degree, Electronics & Communication
  • at Jeppiaar Engineering College, Anna University
  • January 2007

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Specialties & Skills

Cisco Call Manager
Cisco Routers
Cisco Switches
IP Phones
CISCO ROUTERS
COMPUTER NETWORKING
NETWORK ADMINISTRATION
NETWORK ENGINEERING
NETWORKING
OPTIMIZATION
SWITCHES
SYSTEM CONFIGURATION
TROUBLESHOOTING
Project Management
Network Design

Languages

English
Expert

Training and Certifications

CCNA (Certificate)
Date Attended:
June 2008
Valid Until:
January 9999
CCNA (Certificate)
Date Attended:
June 2007
Valid Until:
January 9999
CCNA (Training)
Training Institute:
Cisco
Date Attended:
May 2007
Cisco Certified Network Associate (Certificate)
Date Attended:
January 2008
Valid Until:
January 9999

Hobbies

  • Playing Cricket
  • Playing Cricket
  • Playing Cricket
  • Cricket
    Playing Watching
  • Cricket
    Playing Watching
  • Playing Cricket