Hi, I’m
SIVARAJ SAMIYAPPA
Network Engineer
Deira,Dubai
Summary
Results-driven IT systems and network engineer with over 8 years of experience. Strong background in network design, implementation, and support. Skilled in routing, switching, Windows Server, mail server, firewall technologies, and troubleshooting complex network systems. Proven expertise in enterprise network and service provider environments. Proficient in STP, VLAN, RIP, OSPF, BGP, EIGRP, and TCP/IP protocols. Experienced in efficiently designing IP addressing scenarios using VLSM and subnetting. Adept at monitoring development activities and providing timely risk assessment and mitigation. Trusted to deliver technical and process-level guidance and support to project teams.
Overview
4
years of post-secondary education
2
Certifications
Work History
HCL Technologies Ltd
Senior Technical Lead
Job overview
- Handled LAN/WAN network of Intel/Panasonic PAN India
- Monitored the network security systems in place and ensured that they are regularly updated
- Had been a part of the team responsible for the integration of all systems using TACACS
- Configure and manage static and dynamic routes, troubleshooting Cisco L2, L3 switches; VLAN
- Working on tickets based on SLA and handling outage calls and ensure about network status
- Performing cisco IOS Upgradation Activities.(Cisco2960, Cisco3945)
- Performing Cisco ASA IOS Upgradation.(5555,5585 models)
- Handled High Availability(HA) failover test in Checkpoint & Cisco ASA FWs
- Performed Device replacement like Cisco router's(C3945)
- Working on all network changes and upgrades during scheduled maintenance window
- Routing changes and NAT configuration in firewall based on the requirement.
Synophic Systems Pvt Ltd
Job overview
- Handled ASR5500 GGSN, Nexus 7k & 5k Switches, ASR9010 Gateways
- Trouble shooting & rectification of alarms due to various issues in all Packet core Nodes
- Preparing MOP's for Paco & IP nodes Like GGSN, GWs, DNS, AAA
- Operation & Maintenance activities of packet core nodes such as SGSN, GGSN, and DNS, AAA.N7K, 5K, ILO, FW
- Adding Exception URL's & IP's in Gi DNS
- Network IP path routing for different interfaces & services
- IP pool augmentation of various APNs
- Creating QOS profile& throttling speed of subscriber (Ex.64Kbps, 512 Kbps etc) as per customer request
- Creating Gy diameter peers (OCS) of home &roaming subscriber as per customer request
- Media issues &BGP issue is follow up to concern team and escalations also
- Daily Health checkup SGSN, GGSN, CG, FIREWALL, BG routers, LAN switches ,DNS,AAA,SGSNGW,ILO,N7K,5K etc
- URL's blocking in GGSN as per Customer request
- White listing New IP's as per customer requirement
- Troubleshooting Customer Complaints like Browsing related issue
- Configuration of new services and features at GGSN and creating the test profile for the new services to check the services are working or not before going to live the services
- Zero rating configurations for some public sites (Ex: facebook, Wikipedia, whatsapp, chatty etc.) Implementation and testing of new applications at GGSN for different APNs
- User trace files analysis to resolve network issues and customer complaints
- Monitoring the CGF (Charging GW) and taking GGSN CDRs from CGF.
HCL Technologies Ltd
Job overview
- Managed and maintained the HCL Tech and CommNet corporate network including isolated networks of different projects within HCL
- Handled & Coordinated with concern support Team: Good knowledge of TCP/IP, routing, switching and sub netting
- Expertise in Routing protocols like RIP, OSPF ,EIGRP, BGP and MPLS
- Experience in configuring Trunk, VTP, DTP,VLANs
- Experience in implementing switch port security
- Basic Knowledge in HSRP/VRRP and STP, PVST+,MST implementation
- Basic Knowledge in Syslog, SNMP and AAA
- Allocating subnets and creating VLANs for new projects and existing project expansion
- ISP for the resolution of WAN related issues and Coordinating with vendor for hardware related issues
- Daily network operations like changing VLANs in access ports and troubleshooting other network related issues
- Configuring static routes towards corporate firewall for allowing new client URLs
- Knowledge of DNS, DHCP and related components ( DHCP snooping )
- Installation and Configuration of Operating Systems such as Microsoft Windows 2008, XP, 2003, 2008, 2012 server
- Coordinating with Server, Firewall & PMO team for providing design solution for new projects knowing their requirements
- PMO related activities to support project team, RAS assignation and Asset Tracking Management
- Implemented and managed IP Addressing; configured TCP/IP addressing on a server
- Provided technical support for hardware/software configurations and applications
- Configuring conventional & object group ACLs to filter the traffic in the L3 VLAN
- Advertising the subnet created for new projects in the OSPF domain
- Handling day-to-day network operations like changing VLANs in access ports and troubleshooting other network related issues
- Analysing day to day syslog messages and taking preventive action
- Coordinating with ISP for the resolution of WAN related issues and Coordinating with vendor for hardware related issues
- Administered/provided troubleshooting for Lotus Notes and MS Outlook
- Implemented Six Sigma into two sub core projects it reduce time duration and cost(500k USD)
- Responsible for: Windows maintenance, dual booting, upgrade & update the windows
- MS outlook configuration, Outlook backup & restore and troubleshooting
- Disk Management, partitions, Printer installation and troubleshooting
- Antivirus update & virus protection
- Scanner configuration & troubleshooting, Troubleshooting of hardware and O/S
- Basic Networking, Map drive, Data sharing, TCP/IP Configuration, Internet Maintenance
- Data Cards configure and troubleshooting, Remote desktop and Remote assistance
- Wireless Networking, Networking in Domain environment, Basic Firewall configuration
- User Profiles Backup and Restore, Sharing folder, sharing device & Printer
- Basic Networking, peer to peer, Map drive, Data sharing
- TCP/IP Configuration, Smooth running internet, Maintenance
- Networking in Domain environment, & troubleshooting
- Hardware Installation, Maintenance & trouble shooting
- Cabling, patching, and LAN troubleshooting.
Education
Anna UniversityChennai
B.E (ECE) from Computer Networking And Telecommunications
Aug.2008 - Apr.2012 (3 years & 8 months)
Skills
Configuring and maintaining CISCO Catalyst switches like 2950, 2960, 3550, 3750
Certification
Cisco Certified Network Associate (CCNA R&S)
Personal Information
- Passport Number: Y5149544
- Nationality: INDIAN
- Visa Status: 28-Oct-2024(Visit Visa)
Previous Experience
Zero Onee Tooling Limited, Chennai, Desktop & Hardware Engineer, 08/01/2012, 01/01/2014
Reference
Will be furnished upon request
Languages
English
Tamil
Training
Network Bulls, Gurgaon, CCIE Routing & Switching
Timeline
Anna University
B.E (ECE) from Computer Networking And Telecommunications
Aug.2008 - Apr.2012 (3 years & 8 months)
Senior Technical Lead
HCL Technologies Ltd
Synophic Systems Pvt Ltd
HCL Technologies Ltd
Availability
See my work availability
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Available
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