Kareembaba shaik

Kareembaba Shaik Network Engineer

Mail: *************@*****.*** Mobile: 931-***-**** LinkedIn

PROFESSIONAL SUMMARY

Experienced Network Engineer with over 5 years of expertise in designing, configuring, securing, and maintaining enterprise-grade network infrastructures. Proficient in LAN/WAN, firewalls, routing, switching, load balancing, and cloud network services. Skilled in working with Cisco, Juniper, Fortinet, Palo Alto, and cloud networking tools (AWS, Azure). Proven success supporting clients across Telecom, Finance, and Healthcare sectors with a focus on performance, reliability, and security. Adept at troubleshooting, network automation (Python, Ansible), and collaborating with cross-functional IT and security teams.

Technical Skills & Tools

Networking Technologies: TCP/IP, BGP, OSPF, EIGRP, MPLS, VLANs, STP, NAT, QoS, IPsec, GRE

Devices & Platforms: Cisco (IOS, ASA, Nexus), Juniper, Fortinet, Palo Alto, Aruba, Ubiquiti

Security Tools: Firewalls (Cisco ASA, Palo Alto, Fortinet), VPNs, ACLs, IDS/IPS

Cloud Networking: AWS VPC, Transit Gateway, Direct Connect, Azure VNets, NSGs

Monitoring & Tools: Wireshark, SolarWinds, PRTG, Nagios, NetFlow, SNMP

Automation & Scripting: Python, Ansible, Bash, Cisco DNA Center

Operating Systems: Linux (Ubuntu, CentOS), Windows Server

Protocols: DHCP, DNS, HTTP/S, SSH, FTP, SNMP

Documentation & Collaboration: Visio, Confluence, Jira, Service Now

PROFESSIONAL EXPERIENCE

Harmonecare, Detroit, MI

Hospital Network Modernization

July2024 – Present

Overhauled legacy infrastructure across multiple hospitals and clinics, enabling support for VoIP and EMR systems with improved reliability and throughput.

Deployed Cisco DNA Center for centralized automation, zero-touch provisioning, and real-time network visibility.

Designed secure, HIPAA-compliant VLAN segmentation for medical devices, clinical staff, and guest traffic.

Installed Fortinet firewalls in HA pairs and configured SD-WAN with dual ISP failover to ensure maximum uptime.

Monitored traffic flows and performance metrics using PRTG, NetFlow, and custom dashboards to identify bottlenecks.

Implemented enterprise-grade Aruba Wi-Fi networks with WPA3, 802.1X, and dynamic VLAN assignment for user-based access control.

Regularly performed firmware upgrades and security patching to address vulnerabilities and maintain compliance.

Collaborated with cloud teams to deploy AWS Direct Connect, securing integrations with cloud-based healthcare SaaS platforms.

Enforced identity-based access and audit controls using TACACS+, centralized syslog logging, and role-based privileges.

Conducted disaster recovery (DR) testing, failover simulations, and redundant path validations as part of BCP initiatives.

Participated in change control processes and maintained compliance documentation for healthcare IT audits.

Trained cross-functional IT teams on best practices for network hygiene, incident response, and secure remote access.

Globe Telecom, Bangalore, Karnataka

Network Support

Jan 2021 – July 2023

Oversaw nationwide MPLS and leased line infrastructure, maintaining 99.99% uptime and ensuring high availability of critical network services.

Configured and maintained Cisco routers and switches across 50+ remote sites, enabling seamless inter-office communication.

Designed and implemented VLAN segmentation and inter-VLAN routing, boosting security and optimizing traffic flow.

Deployed and fine-tuned BGP and OSPF routing protocols across WAN links, enhancing dynamic path selection and failover.

Established secure remote and site-to-site connectivity using IPSec and SSL VPN tunnels.

Managed Cisco ASA firewalls, creating custom NAT/PAT policies, access control rules, and DMZ environments for hosted applications.

Troubleshot latency, jitter, and packet loss using Wireshark and NetFlow, improving app response times by 30%.

Automated backups, configuration pushes, and compliance audits using Ansible and Python, cutting manual effort by 50%.

Coordinated with ISPs for bandwidth upgrades, fault resolution, and circuit performance optimization.

Created and updated detailed network diagrams using Microsoft Visio, and maintained change logs and incidents via Jira.

Monitored traffic patterns and resource utilization using SolarWinds and SNMP-based tools to proactively resolve bottlenecks.

Conducted routine network health checks and penetration testing readiness using Nmap, PingPlotter, and syslog analyzers.

DBS Bank, Mumbai

Network Security Enhancement

Nov 2019 – Dec 2020

Led multi-site data centre consolidation, migrating core network infrastructure with zero unplanned downtime.

Installed and configured Cisco Nexus switches and Palo Alto Firewalls, ensuring scalable, secure network edge and core architecture.

Designed segmented, zero-trust-ready network topologies for internal systems and public-facing applications to isolate threats and enhance compliance.

Deployed High Availability (HA) pairs of firewalls, F5 load balancers, and redundant uplinks to ensure uninterrupted business operations.

Integrated 802.1X network access control using RADIUS, enforcing identity-based security across all switch ports.

Created and fine-tuned ACLs, VPN tunnels, and NAT rules aligned with third-party security audit recommendations.

Utilized SolarWinds and SNMP traps to monitor infrastructure, proactively identifying and resolving critical network issues.

Collaborated with cybersecurity teams to remediate vulnerabilities, fine-tune IDS/IPS, and harden network perimeter defenses.

Authored detailed change management and risk documentation, supporting audits, IT compliance reviews, and internal governance.

Conducted hands-on training for internal network admins on new gear, troubleshooting techniques, and failover scenarios.

Streamlined post-migration performance tuning and baseline checks using Wireshark, syslog, and custom alerting scripts.

Championed a culture of proactive maintenance and incident readiness through workshops, documentation, and escalation runbooks.

Education

Master’s In Computer Science - Auburn University at Montgomery

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