Sasi Kumar Kaligithi

About Sasi Kumar Kaligithi

Network Engineer with 4+ years of experience designing, implementing, and supporting secure, high-availability enterprise networks across finance, healthcare, insurance, and logistics environments. Strong background in routing and switching using Cisco Catalyst, Nexus, ISR, and ASR platforms, with hands-on expertise in LAN/WAN, TCP/IP, VLANs, and dynamic routing protocols including BGP, OSPF, EIGRP, HSRP, and VRRP.Experienced in network security and firewall technologies, including Palo Alto Networks and Fortinet FortiGate, with practical knowledge of VPNs, IDS/IPS, access control, encryption, and secure network design. Proven ability to troubleshoot complex network issues, optimize performance, and maintain uptime in mission-critical environments.Skilled in cloud and hybrid networking with AWS, along with monitoring and troubleshooting using tools such as Wireshark, SolarWinds, and AWS CloudWatch. Comfortable working in fast-paced enterprise and managed services environments, supporting multiple stakeholders, following change management processes, and maintaining detailed network documentation and diagrams.Passionate about building reliable, scalable, and secure network infrastructures while continuously learning new technologies. CCNA certified, with experience collaborating across cross-functional teams to deliver stable and secure connectivity for business-critical applications.

Experience

1. Network Engineer

   Northern Trust

   Nov 2024 — Present · Atlanta, GA, US

   Built a unified network fabric integrating IoT telemetry from hundreds of vehicles using TCP/IP protocol optimization and VRRP redundancy to aggregate GPS data, fuel consumption metrics, and driver behavior logs across regional logistics operations with zero data loss.• Configured Cisco ISR routers (4431, 8200 series) at distribution centers with RIP and EIGRP routing protocols to establish reliable connectivity between vehicle tracking endpoints and centralized ML analytics platforms, reducing route optimization latency by 40%.• Implemented Cisco Catalyst Multi-Layer Switching (3750, 9300 series) with PVST and MST protocols to segment logistics management traffic, separating real-time GPS streams from administrative operations and preventing network congestion during peak delivery windows.• Deployed Palo Alto Networks security appliances with SSL/VPN encryption for vehicle-to-server communications, protecting GPS coordinates and driver location data from unauthorized interception while enabling secure API connections for route dispatch and traffic feed integration.• Containerized real-time route optimization services using Kubernetes and Docker, enabling scalable deployment of ML-based delay prediction and dispatch decision engines across AWS infrastructure, reducing deployment time by 60% and improving platform elasticity.• Configured AWS CloudWatch and Wireshark packet analysis to monitor vehicle telemetry streaming patterns, network latency between fleet endpoints and optimization engines, and real-time alert mechanisms for route anomalies, enabling fleet visibility and faster incident response.

Education

• Marri Laxman Reddy Institute of Tech. and Management

  Bachelor of Technology - BTech, Computer Science

• Auburn University

  Master of Science - MS, Data analyst