AMBIKESWARAN KARUPPIAH
Network solution Engineer
Chennai
Summary
Experienced Senior Analyst with a proven track record in network security and load balancing solutions, bringing 14 years of expertise to a Senior Network Analyst role. Skilled in configuring and troubleshooting network security infrastructure, with hands-on experience in managing complex incidents. Excited to apply my technical knowledge and problem-solving abilities to support the mission of a prominent BFSI company, contributing to the seamless operation of critical banking systems.
Overview
19
19
years of professional experience
2006
2006
years of post-secondary education
Work History
Network Solution Engineer (AVP)
BARCLAYS GLOBAL SERVICE CENTRE PVT LTD
08.2023 - Current
- As a member of the Solutions, Design, and Delivery team, I have contributed to various programs and projects at Barclays Bank, encompassing business, network, and security initiatives, to deliver optimal network designs for applications, and their implementation.
- My work includes F5 traffic management solutions (LTM and GTM) and AVI LB, covering infrastructure design, detailed engineering, and application load balancing across Barclays' network and infrastructure.
- I have analyzed and configured firewall rules/ACLs using FortiGate and Cisco ASA firewalls. In collaboration with Application/Server owners, Network, DNS, Certificate Management, and Firewall teams.
- Configure rules for Bluecoat proxies through VPM, and address related proxy environment issues. Additionally, I create PAC files allowing users to connect directly to the test proxy for environment testing, and generate DNS records via QIP (A, PTR, CNAME records).
- I have facilitated migration and cutover activities for end-of-life support on DMZ stacks.
- My role with AppViewX Multi-Vendor Tool Management involved device onboarding, management, backup, storage, dashboard creation, workflow requests, role assignment, reporting, and end-user troubleshooting.
- I have created various AppViewX workflows for VIP creation, modification, disabling, and deletion, to encourage automation over manual processes.
- Additionally, I have utilized Infoblox for DNS and DHCP configurations, and leveraged CertNow/Venafi tools for certificate onboarding, management, and LB device profile mapping.
- I have collaborated with customer technical teams to develop and deploy new solutions, as required.
- My BAU operations responsibilities include managing ticket queues, resource allocation, and troubleshooting with the Application Team to resolution. I conduct peer reviews of LB tasks, adhere to the change management process, implement network changes, and secure timely CAB approvals.
- Furthermore, I am involved in working with and developing team members' skills in network security tools.
Senior Analyst
Bank of America Continuum India
01.2016 - 07.2023
- I am involved in creating F5 monitors, WideIPs, virtual servers, pools, data groups, and iRules for online and mobile banking platforms. I also establish F5 GTM WideIPs for global load balancing, and manage SSL certificates on F5 LTM, renewing them using a centralized PKI management tool, Venafi, to handle multiple certificates.
- My role includes troubleshooting network and security issues, collaborating with various middleware servers, and application teams.
- I provide on-call support to maintain 24/7 operations. I install multi-node AppviewX setups to manage the e-commerce F5 load balancing infrastructure, focusing on the automation and orchestration of application-centric traffic.
- I develop scripts for daily application health checks to assist the operations team in issue mitigation. Furthermore, I conduct RMA validations for newly replaced or reconfigured F5 devices, and monitor Splunk queries, utilizing the Splunk index search to resolve client queries and application issues.
Technical Lead
Mindtree
02.2016 - 09.2018
- I migrated Cisco Ace device configurations to F5 Big-IP, as well as Citrix NetScaler and WAF configurations to F5 BIG-IP LTM and ASM.
- I configured Citrix NetScaler to function as GSLB, content switching, and WAF. My experience extends to internal and external network devices, such as load balancers, DNS, proxies, and firewalls.
- I have designed various authentication flows with F5 APM, including LDAP, RSA, OTP, and certificate-based authentications. Additionally, I configured F5 EM to archive regular snapshots of F5 devices.
- Collaborating closely with the application team, I gained an understanding of the requirements and flow of application calls, ensuring application availability in disaster scenarios across data centers.
- I managed SSL certificates for creating, renewing, and replacing them to secure web applications in the organization, using both ICA and other vendor CAs.
- I implemented SNI-based profiles for multiple web applications and sites, which reduced the need for public IP addresses hosted externally.
- My role as a design and implementation engineer involved delivering services that meet the business and operational objectives.
Senior System Specialist
Vodafone Global Service Pvt Ltd
01.2013 - 01.2016
- Serve as a technical escalation and resolution point throughout the project lifecycle, making crucial technical decisions. Ascertain and supply the required level of technical documentation. Design and implement SNMP-based fault alert monitoring for LTM, GTM, and Bluecoat proxies. Provide a high-level design for F5 load balancers, Bluecoat proxies, and DNS modifications.
- Collaborate closely with the engineering team on new deployments within the client's infrastructure. Manage SEV1 incidents and high-priority SEV2 calls for F5 load balancers and Bluecoat proxies.
- Mentor the Level 2 team.
Systems Specialist
Cable & Wireless Worldwide
01.2010 - 01.2013
- Serve as the initial point of escalation for both technical and management issues. Manage escalations from Level 2, and collaborate with Level 3 technical support for expedited resolutions.
- Execute high-risk, visible changes to F5 load balancers and Bluecoat proxies, ensuring smooth transitions by working closely with project managers and clients. Assume shift lead responsibilities.
- Deliver standard designs for F5 load balancers, Bluecoat proxies, and manage DNS and DHCP modifications. Handle incident calls for F5 load balancers and Bluecoat proxies, providing effective solutions.
Service Engineer
Infonet Solutions
01.2007 - 01.2010
- I served as a Hardware Service Engineer at the client's location, focusing on hardware/software integration. I was responsible for constructing and setting up test servers, providing support for desktop-related issues to both local and remote users, implementing new PCs and printers within the network, troubleshooting and keeping the internal networking, internet, and email systems, in addition to establishing an internal proxy with Red Hat Linux (Squid), and administering Access Control Lists (ACLs).
Education
Bachelor of Technology - Information Technology
Raja College of Engineering & Technology, Anna University
Madurai08.2006
Skills
BigIP F5 (LTM/GTM/ASM/APM)
Firewall (FortiGate, Cisco ASA)
DNS/DHCP (Infoblox)
Venafi/Certnow
undefinedTimeline
Network Solution Engineer (AVP)
BARCLAYS GLOBAL SERVICE CENTRE PVT LTD
08.2023 - Current
Technical Lead
Mindtree
02.2016 - 09.2018
Senior Analyst
Bank of America Continuum India
01.2016 - 07.2023
Senior System Specialist
Vodafone Global Service Pvt Ltd
01.2013 - 01.2016
Systems Specialist
Cable & Wireless Worldwide
01.2010 - 01.2013
Service Engineer
Infonet Solutions
01.2007 - 01.2010
Bachelor of Technology - Information Technology
Raja College of Engineering & Technology, Anna University
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