POTHIRAJ SUBBURAJ
London,UK
Summary
- Experienced in IP networking and security, with expertise in routing, switching, wireless technologies, and cloud solutions such as Azure.
- Proficient in managing and configuring advanced network systems including f5-Load Balancer, Palo Alto, Fortinet, ASA, Infoblox & ISE.
- Demonstrates strong skills in SDWAN & Zscalar and a solid understanding of the OSI model & TCP/IP protocols.
- Adept at troubleshooting complex network issues across OSPF, IS-IS & BGP protocols and implementing VRF, MPLS and IPSEC-VPN solutions.
- Skilled in using monitoring tools like Base-N, HP TeMIP, CA Spectrum, New Relic, NetBrain and SolarWinds to ensure optimal network performance.
- Utilises ticketing tools such as BMC Remedy for efficient incident management.
- Career goals include advancing expertise in network security and contributing to innovative technology solutions.
Overview
12
12
years of professional experience
5
5
years of post-secondary education
1
1
Certification
Work history
Network and security engineer
Tata Consultancy Services
Yiewsley, Hillingdon
06.2019 - 11.2025
- Network Management: Oversaw switching, routing, wireless, firewall, Azure, Infoblox, and F5 load balancers; managed Network Operations Centre team and handled network issues through BMC Remedy.
- Supervised complete incident recovery cycle, from initial containment through to total operational restoration, limiting downtime and mitigating business impact.
- Delivered robust VPN solutions for secure remote access.
- Monitoring & Troubleshooting: Monitored data centres, distribution centres, head offices, stores, and depots; resolved wireless, routing, switching, and basic firewall issues; managed IPSEC VPN tunnels and improved wireless performance using 7signal and Cisco DNAC.
- Event Planning & Support: Planned and implemented network events like traffic optimisation, hardware replacements, and IOS upgrades; supported fail-over testing and provided technical support for field staff.
- Directed management of diverse WAN sections for MNS traffic; scrutinised and repaired BGP, HSRP, and VRRP; guaranteed compliance with SLAs for network availability.
- Troubleshot complex network issues to restore functionality swiftly.
- Configured routers and switches optimally; achieved a balanced load distribution on servers.
- Managed project timelines through Jira; facilitated weekly vendor meetings with Cisco, Juniper, and Palo Alto to address case management and resolve issues.
Network Engineer-L2
Future Focus Infotech ltd (Working for TCS)
Chennai
12.2017 - 06.2019
- Network Management: Oversaw switching, routing, wireless, firewall, Azure, Infoblox, and F5 load balancers; managed Network Operations Centre team and handled network issues through BMC Remedy.
- Monitoring & Troubleshooting: Monitored data centers, distribution centers, head offices, stores, and depots; resolved wireless, routing, switching, and basic firewall issues; managed IPSEC VPN tunnels and improved wireless performance using 7signal and Cisco DNAC.
- Event Planning & Support: Planned and implemented network events like traffic optimization, hardware replacements, and IOS upgrades; supported fail-over testing and provided technical support for field staff.
- Performance & Analysis: Managed various WAN parts for MNS traffic; analyzed and troubleshot BGP, HSRP, and VRRP; and ensured compliance with SLAs for network uptime.
- Project & Vendor Coordination: Monitored projects with Jira; held weekly vendor meetings with Cisco, Juniper, and Palo Alto for case management and issue resolution.
Senior Executive L1 IP Access FM Engineer
Reliance Jio Infocomm ltd
Chennai, Siruseri
08.2015 - 12.2017
- Network Performance & SLA Management: Maintained network performance, ensured SLA compliance, and checked traffic flow and redundancy.
- Incident & Issue Resolution: Analyzed and resolved user-generated trouble tickets, managed outages and service degradation, and prepared root cause analyses for critical issues.
- Configuration & Support: Performed basic configuration and troubleshooting for IS-IS, MPLS, and BGP; supported field technicians and managed hardware issues; suggested IOS upgrades for routers.
- Reporting & Coordination: Maintained detailed reporting, scheduled hardware-related activities, supported fiber engineers during physical media issues, and coordinated IP network issues with the core team.
Surveillance IP Engineer
Nokia Networks
Chennai, Navallur
04.2014 - 08.2015
- Managed real-time alarm monitoring and issue escalation for Vodafone's network across 12 circles in India, utilizing Base N for alarm tracking and bandwidth reporting.
- Conducted daily operations including alarm system support, router alarm handling, and preparation of traffic and bandwidth reports while ensuring SLA compliance and performing root cause analysis.
- Oversaw network maintenance, including SNMP trap management, router auditing, and configuration checks, while developing processes to improve core network operations and address IP-related issues.
Education
Bachelor of Engineering - Electronics & Communication
PSR Engineering College
Sivakasi, Tamilnadu 01.2008 - 01.2012
Higher Secondary School Certificate - Maths-Biology
SBK Higher Secondary School
Aruppukottai, Tamilnadu 06.2007 - 04.2008
Secondary School Certificate - SSLC
Government Higher Secondary School
Kalingapatti, Tamilnadu 06.2005 - 01.2006
Skills
- Domain Experience: IP Networking and Security
- Area: Routing, Switching, Wireless, Azure, f5-Load Balancer, Palo Alto, Fortinet, ASA, Infoblox & ISE
- SDWAN & Zscalar
- Good understanding of OSI model & TCP/IP Protocols
- Experience in Configuration and Troubleshooting knowledge of below technologies
- OSPF, IS-IS & BGP
- VRF, MPLS and IPSEC-VPN
- STP, VLAN and VTP
- ACL
- HSRP and VRRP
- Monitoring tools – Base-N, HP TeMIP, CA Spectrum, New Relic, NetBrain and SolarWinds
- Ticketing tools – BMC Remedy
- Bandwidth Monitoring - Cacti and SmokePing
- Splunk
Certification
- Certified in CCNA – Routing & Switching
- Certified in CCNP – Routing & Switching
- PCNSE
Accomplishments
- Got an appreciation award for project completion on time and cyber incident recovery.
Languages
English
Upper intermediate (B2)
Tamil
Proficient (C2)
Products Handled
- Cisco Routers: 7909, 6509, 1921, 2911, ASR 920, 903, 9K series.
- Cisco Switches: 3750, 2960.
- Juniper Routers: ACX 2000, SRX 300 series, SRX1500, SRX4200.
- Juniper Switches: EX2200, EX3300, EX3400, EX4600.
- Other Devices: 3Com Switches (4400, 4800), Zyxel Modem (VMG8924-B10A), Wireless Controllers (Moto NX9500, Extreme VX9000, Moto WS5100), Access Points & Security Devices (Moto 7532, 7522, AP310, Cisco Aironet 1140/1142 series, Palo Alto, F5 Load Balancer, Cisco ASA).
Personal Profile
- Date of Birth : 13-04-1991
- Passport Number : Y3840410
- Valid Till : 18/06/2034
Timeline
Network and security engineer
Tata Consultancy Services
06.2019 - 11.2025
Network Engineer-L2
Future Focus Infotech ltd (Working for TCS)
12.2017 - 06.2019
Senior Executive L1 IP Access FM Engineer
Reliance Jio Infocomm ltd
08.2015 - 12.2017
Surveillance IP Engineer
Nokia Networks
04.2014 - 08.2015
Bachelor of Engineering - Electronics & Communication
PSR Engineering College
01.2008 - 01.2012
Higher Secondary School Certificate - Maths-Biology
SBK Higher Secondary School
06.2007 - 04.2008
Secondary School Certificate - SSLC
Government Higher Secondary School
06.2005 - 01.2006