Network Engineer Systems

Sampath

Email: ****************@*****.***

Phone: +1-646-***-****

Sr Network Engineer

Professional Summary:

8+ years of experience in network infrastructure design, implementation, and optimization across telecommunications, cloud environments, and digital transformation projects.

Expertise in designing and deploying high-availability network systems, ensuring redundancy and scalability to meet growing business demands.

Skilled in managing network security protocols, including firewalls, VPNs, IDS/IPS, and DDoS protection, ensuring secure and compliant systems.

Proficient in cloud network integration, with experience in transitioning on-premise infrastructures to AWS and Azure cloud environments, including hybrid cloud integration.

Led the deployment of IoT-based network systems, ensuring low-latency connectivity and highly available infrastructure for real-time data collection and analysis.

Expertise in configuring and optimizing network devices such as Cisco, Juniper, Arista routers, switches, and firewalls for optimal network performance.

Extensive experience with routing protocols including BGP (Border Gateway Protocol) and OSPF (Open Shortest Path First) to enhance network performance and redundancy.

Proficient in network automation using Python and Ansible, streamlining configuration management and reducing manual errors during network provisioning and updates.

Hands-on experience with network performance monitoring tools such as SolarWinds, Nagios, Wireshark, and NetFlow to proactively monitor and address network performance issues.

Extensive knowledge of MPLS, SD-WAN, VPN solutions, and QoS (Quality of Service) for secure, efficient, and optimized inter-site connectivity.

Strong expertise in network troubleshooting, including diagnosing and resolving issues related to network latency, packet loss, application performance, and service interruptions.

Expertise in disaster recovery and business continuity planning, ensuring network resilience and data availability during outages or emergencies.

Led successful network migration projects, minimizing downtime while integrating new technologies for better performance and supporting the growing demands of mobile and cloud services.

Collaborated with cross-functional teams to define and implement network SLAs, ensuring compliance with industry standards and business continuity requirements.

Proven ability to mentor and provide technical support to junior engineers, ensuring adherence to best practices in network design and troubleshooting.

Created and maintained network documentation, including network diagrams, IP addressing schemas, and troubleshooting guides for operational transparency and future reference.

Provided 24/7 on-call network support, addressing critical incidents and ensuring uninterrupted service.

CERTIFICATION:

Cisco Certified Network Associate (CCNA)

Cisco Certified Network Professional (CCNP)

TECHNICAL SKILLS:

Cisco Routers

2600, 2800, 2900, 3600, 3700, 3800, 3900, 4400, 8300,8500

Cisco Switches

2900, 3500, 3600, 3750, 4500, 4900, 6500, ASR9k

Nexus

2k, 5k, 7k,9k

Juniper

M320, T640

Network Protocols & Routing: BGP, OSPF, MPLS, QoS, IP Addressing, Subnetting, VLANs, VPN (IPSec, SSL), SD-WAN

Cloud Technologies: AWS (VPC, EC2, S3), Azure (VNet, Load Balancer, Security), Hybrid Cloud Integration

Networking Devices & Configuration: Cisco, Juniper, Arista Routers, Switches, Firewalls (Fortinet, Palo Alto, CheckPoint), Load Balancers

Network Security: Firewalls, IDS/IPS, DDoS Protection, VPNs, IPSec, SSL, Security Policies, Compliance (PCI-DSS, HIPAA)

Monitoring & Troubleshooting Tools: SolarWinds, Nagios, Wireshark, NetFlow, PRTG, SNMP, Syslog, Performance Monitoring

Automation & Scripting: Python, Ansible, Bash, PowerShell, Network Automation, Configuration Management

Network Design & Optimization: WAN/LAN Design, Traffic Shaping, Load Balancing, Bandwidth Management, Network Capacity Planning

Data Center & Virtualization: VMware, Hyper-V, Virtual LAN (VLAN), Virtual Private Cloud (VPC), Load Balancers

Disaster Recovery & Business Continuity: Backup Solutions, Site-to-Site Failover, Resiliency Planning, High Availability Architectures

SD-WAN: Implementation, Troubleshooting, Optimization, Branch Connectivity Solutions

IP Telephony & Unified Communications: VoIP, SIP, MPLS for Voice/Data Integration

Tools & Platforms: Cisco Prime, Junos Space, NetFlow Analyzer, Wireshark, PRTG, SolarWinds Network Performance Monitor

Operating Systems: Linux (CentOS, Ubuntu), Windows Server, Network OS (Cisco IOS, Junos OS)

Professional Experience:

Company: AT&T, Remote

Role: Sr Network Engineer

Duration: January 2024 – Present

Responsibilities:

Lead network infrastructure design and implementation for a large-scale digital transformation project, involving the integration of cloud-based solutions and advanced network services for a growing enterprise client.

Managed the configuration and optimization of advanced network components, including high-capacity routers, switches, firewalls, and SD-WAN, ensuring scalability, performance, and security for the client's expanding network footprint.

Configured and maintained network security measures such as firewalls, VPNs, IDS/IPS, and DDoS protection, working alongside the security team to mitigate risks and maintain compliance with industry regulations.

Optimized network traffic flow using BGP (Border Gateway Protocol) and OSPF (Open Shortest Path First) routing protocols to enhance network performance and redundancy.

Played a key role in the transition of on-premise infrastructure to cloud environments (AWS, Azure), configuring Virtual Private Cloud (VPC) solutions and ensuring smooth hybrid cloud integration for clients' global network operations.

Led the deployment of IoT-based network systems to support real-time data collection and analysis for client operations, ensuring low-latency connectivity and highly available infrastructure.

Monitored network performance using SolarWinds, Nagios, and Wireshark, implementing proactive measures to address any potential performance issues before they affected network reliability.

Developed network automation scripts in Python and Ansible, streamlining configuration management and reducing the risk of manual errors during network provisioning and updates.

Performed comprehensive network troubleshooting and optimization, including diagnosing and resolving issues related to network latency, packet loss, and application performance, ensuring minimal service disruption.

Managed and participated in network migration projects, overseeing the successful integration of new technologies while minimizing downtime and ensuring continuous service availability.

Worked with cross-functional teams to define and implement network performance SLAs and disaster recovery plans, ensuring that the client’s infrastructure meets business continuity requirements.

Created detailed network documentation, including network topologies, configuration guides, and incident reports, to ensure operational transparency and efficiency.

Provided 24/7 on-call support and addressed critical network incidents in a timely manner to minimize service disruption and maintain optimal network performance.

Environment: Cisco 2960/4461/9300/9500/8300/8500 Cisco IP Phones, Wireless Controllers and access points, Security Firewalls 2110,2130 series

Company: T-Mobile, New York, NY

Role: Sr Network Engineer

Duration: April 2022 – December 2023

Responsibilities:

Designed, implemented, and optimized large-scale network infrastructure solutions for a telecommunication client, focusing on high availability, redundancy, and scalability of the network architecture.

Led network migration projects involving the transition of legacy network systems to next-generation platforms, enhancing performance and supporting the growing demands of mobile and cloud services.

Configured and managed Cisco, Juniper, and Arista routers, switches, and firewalls, ensuring optimal routing, security policies, and high-performance connectivity for voice, data, and video communications.

Monitored network performance using tools like SolarWinds, NetFlow, and Wireshark, proactively addressing any issues related to network bottlenecks, latency, and availability.

Implemented and maintained MPLS (Multiprotocol Label Switching) and VPN solutions for secure inter-site connectivity, supporting remote offices and cloud-based platforms.

Collaborated with cross-functional teams to design and deploy SD-WAN solutions, improving WAN performance and reducing costs while ensuring seamless connectivity for branch offices and remote users.

Led the troubleshooting and resolution of complex network issues across multiple locations, including troubleshooting LAN, WAN, and wireless connectivity problems and performing root cause analysis.

Worked closely with the security team to integrate network security measures, including firewalls, IDS/IPS, and DDoS mitigation strategies to protect against cyber threats and ensure service continuity.

Optimized network traffic flow using Quality of Service (QoS) and traffic prioritization techniques, ensuring that mission-critical applications received the necessary bandwidth for reliable performance.

Managed network capacity planning, ensuring the network infrastructure could scale to meet future growth in bandwidth usage, customer demand, and service expansion.

Worked with vendors and service providers to procure new hardware and manage software updates and patch management for critical network components.

Designed and implemented disaster recovery and business continuity plans to ensure network resilience and data availability in the event of outages or emergencies.

Provided mentorship and training to junior network engineers and other team members, fostering skill development and ensuring adherence to best practices in network design and troubleshooting.

Created and maintained network documentation, including network diagrams, IP addressing schemes, configuration standards, and troubleshooting procedures.

Supported 24/7 on-call network operations, responding to critical network incidents and minimizing downtime to ensure uninterrupted telecommunication services for clients.

Led the deployment of 5G network infrastructure, collaborating with the engineering team to ensure proper integration with existing 4G networks, enabling enhanced mobile broadband and IoT services for customers.

Coordinated with cross-functional teams to implement and optimize network automation using Ansible and Python scripting, reducing manual configuration tasks and improving the efficiency and consistency of network deployments.

Performed network capacity analysis and recommended hardware upgrades and configuration adjustments, resulting in a 30% improvement in network throughput and a significant reduction in service interruptions.

Environment: Cisco 2960/3750/4500/3500/2960 switches and Cisco 2911/3845/3600/2900 routers, Nexus 5k,7k, EGRP, DNS, Riverbed Steelhead, Cisco IP Phones, VSAT, Wireless Controllers and access points, Security Firewalls 5500 series.

Company: NJPAC, Newark, NJ

Role: Network Engineer

Duration: September 2020 – March 2022

Responsibilities:

Designed, implemented, and optimized network infrastructure solutions for enterprise clients, including configuring routers, switches, firewalls, and VPN solutions to ensure network security and high availability.

Led the migration of on-premise network infrastructure to cloud environments (AWS and Azure), ensuring seamless integration between on-premises and cloud-based systems.

Utilized network monitoring tools such as SolarWinds, Nagios, and Wireshark to proactively monitor network performance, detect bottlenecks, and optimize traffic flow.

Worked closely with the cybersecurity team to implement and maintain advanced security protocols, including VPN configurations, firewall rules, IDS/IPS systems, and DDoS protection.

Managed and configured high-performance network devices (Cisco, Juniper, Fortinet) and optimized IP addressing, subnetting, VLANs, and routing protocols (OSPF, BGP).

Collaborated with cross-functional teams to plan and deploy large-scale network projects, ensuring minimal downtime during migrations and network upgrades.

Supported the deployment and configuration of SD-WAN solutions to improve WAN performance and reduce costs across remote office locations.

Conducted regular network audits and assessments, ensuring compliance with industry standards and internal policies for data privacy and security.

Provided technical support and troubleshooting for complex network issues, working across multiple sites and data centers to resolve critical network outages.

Developed and maintained detailed network documentation, including network diagrams, IP addressing schemas, and configurations for future reference.

Assisted in the implementation of network backup and disaster recovery solutions to protect critical network infrastructure from failure or cyber incidents.

Participated in 24/7 on-call support for resolving critical network incidents, minimizing business disruption and ensuring high levels of uptime and availability.

Led troubleshooting efforts for critical network failures in a multi-site enterprise environment, identifying root causes and implementing long-term solutions to improve network reliability and minimize downtime.

Optimized network performance by implementing Quality of Service (QoS) policies and traffic shaping techniques, ensuring that high-priority applications and services received the necessary bandwidth allocation.

Collaborated with vendors and service providers to procure, install, and configure new network hardware and software solutions, ensuring compatibility with existing infrastructure and compliance with performance standards.

Environment: Cisco Switches 2900/3500/3550/4500/3750/6500 series and Cisco Routers 7200/3600/3800/ 2600/2800 series, Nexus 5K/7K series, Cisco Voice, Palo Alto Firewalls, Cisco ASA 5500, Check Points R61/ R65/ R70/ R75/ R77, DMVPN, F5 Load balancer, VLAN, WAN, STP, RIP, OSPF, BGP, EIGRP, LAN, DNC, VPN and HSRP

Company: Cigniti Technologies, IND

Role: Network Engineer

Duration: September 2017 – May 2019

Responsibilities:

Designed, implemented, and maintained network infrastructure solutions, including routers, switches, firewalls, and load balancers, to ensure high availability and scalability.

Led the troubleshooting and resolution of complex network issues across multiple sites, including LAN, WAN, and VPN connectivity problems.

Configured and managed network devices, such as Cisco and Juniper routers, switches, and firewalls, ensuring optimal IP addressing, subnetting, and VLAN configurations.

Monitored network performance and usage with network monitoring tools like SolarWinds, Nagios, and Wireshark, providing regular performance reports and recommendations for optimization.

Assisted in the configuration and maintenance of network security measures, including firewalls, intrusion detection/prevention systems (IDS/IPS), and VPN tunnels.

Conducted routine network maintenance, such as patch management, firmware upgrades, and hardware replacements, to ensure systems remained secure and up-to-date.

Worked closely with cross-functional teams to plan and deploy new network projects, ensuring minimal disruption to ongoing business operations.

Supported the migration of network infrastructure to cloud-based solutions, assisting with VPC configuration and the integration of on-premise networks with cloud environments (e.g., AWS, Azure).

Implemented backup and disaster recovery procedures for critical network components and systems, ensuring data integrity and minimizing downtime during outages.

Created and maintained detailed network documentation, including network diagrams, configurations, and troubleshooting guides for future reference.

Provided on-call support for critical network issues, ensuring swift resolution and minimal impact on business operations.

Environment: F5 Load balancer, VLAN, WAN, STP, RIP, OSPF, BGP, EIGRP, LAN, DNC, VPN and HSRP.

Company: Saviant Consulting, IND

Role: Jr Network Engineer

Duration: August 2015 – August 2017

Responsibilities:

Assisted in the design, installation, and configuration of network infrastructure including routers, switches, firewalls, and wireless access points.

Supported network troubleshooting and resolved connectivity issues across local area networks (LAN) and wide area networks (WAN).

Monitored network performance using tools like SolarWinds and PRTG, providing reports and recommendations for optimization.

Performed routine network maintenance, including firmware updates, hardware replacements, and testing new network equipment.

Configured and managed network devices such as Cisco routers and switches, ensuring proper IP addressing and VLAN configuration.

Assisted senior engineers in the implementation of security policies, including configuring VPNs, firewalls, and intrusion detection/prevention systems.

Provided support for network connectivity issues in a multi-site environment, ensuring minimal downtime and disruption.

Assisted in network performance analysis and optimization to ensure high availability and reliability.

Created and maintained network documentation, including IP addressing schemes, network diagrams, and change management records.

Collaborated with cross-functional teams to deploy network solutions for new projects and business requirements.

Supported the implementation of backup and disaster recovery plans for network systems.

Participated in on-call support rotations, addressing any critical network issues outside of regular business hours.

Environment: Redundancy Protocols: LAN, WAN, HSRP, VLAN, STP, VTP, RSTP, PVST, NAT, PAT, ACL, Route-maps, Routing Protocols: EIGRP, OSPF, BGP, F5, RIP, Syslog-NG, Load balancers, SSL, TLS.

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