Network Engineer with CCNA, Dallas-Based, Onsite/Hybrid-ready

Christian Poku Osei

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

Phone: 718-***-****

Local to Dallas, TX and is available for Onsite and Hybrid in Dallas TX

Summary:

A highly motivated individual who rapidly diagnoses and resolves complex network, hardware, software and client support issues. Results-driven, with the proven ability to administer and control the operation, configuration, maintenance and troubleshooting of multi-sized networks.

Education:

Associate Degree in Computer Network Technology

Borough of Manhattan Community College, NY

Certification:

Cisco Certified Network Associate (CCNA) - CISCO ID: CSCO 12919632

Microsoft Certified Professional (MCP) -ID No. 2730538

CompTIA (A+)

Technical Skills:

Protocols: NAT/PAT, EIGRP, OSPF, BGP, STP/RSTP, VLANS, VTP, ACL, OSI and TCP/IP

Hardware: Router: 2900, 3945, 4431, 4431, 4451, Switch: 2900, 3750, 3850 and 9300, Nexus: 2k, 5k, 7k.

Software: Cisco IOS, Microsoft Office (Word, Excel, PowerPoint, Access), Windows XP

Monitoring tools: Nagios and SolarWinds, WhatsUp Gold, Zabbix

Security: Cisco ASA, Checkpoint, Palo Alto, Firepower, Cisco ISE.

Ticketing System: Remedy, CA Service Desk Manager, Allscripts, ServiceNow

Soft Skills

Excellent communication and work relationship with end users, teammates, managers and vendors.

Easily adapts to change.

Detail oriented.

Ability to work independently or work collectively on projects.

Professional Experience:

Liteon Technologies, Dallas, TX Jun 2024- Jun 2025

Network Engineer

• Configured, installed and supported various network devices such as routers, switches, VoIP phones and wireless.

• Set policies to allow and denied end users traffic through FortiGate 600F firewall.

Created site to site VPNs through FortiGate 600F firewall

• Installed, configured, and update software applications and operating systems.

• Maintained and updated IT inventory records.

• Monitor network traffic and security alerts to detect and respond to threats, vulnerabilities and breaches by using Zabbix monitoring tool.

Responded to user inquiries via phone, email or through ticketing system such as ServiceNow.

• Assisted with setting up and maintaining user accounts, permissions, and access controls.

• Run new RJ45 Cat5e cable from production line to IDF to terminate it.

• Mounted new access points and configure on the switch port with it proper vlan and setup it parameters in the controller.

• Planned and executed network hardware and software upgrades, patches, and firmware updates in collaboration with relevant teams.

Ariat, Dallas, TX Mar 2023 – Oct 2023

Network Engineer ll

• Upgraded the entire wireless infrastructure by deploying Cisco Meraki MR36 access points to replace Aruba 105 and 205 wireless access points.

• Implemented and maintained security measures within the SD-WAN environment, including encryption, authentication, and access controls.

• Configured and troubleshoot Viptela SD-WAN components, including vEdge routers, vSmart controllers, and vManage .

• Monitored network performance and proactively addressed any issues that arise, ensuring minimal downtime.

• Planned and executed network hardware and software upgrades, patches, and firmware updates in collaboration with relevant teams.

• Used WhatsUp Gold to monitor critical infrastructure including routers, switches, firewalls, and servers, ensuring 99.9% network uptime.

• Used SolarWinds to monitor network performance, system availability, and bandwidth usage using diagnostic tools to detect and address issues proactively

• Racked 2000 vEdge routers at various distribution sites.

Wells Fargo, Dallas, TX Mar 2022 – Nov 2022

Network Engineer

• Upgrades 3750 and 3850 to 9300 and 9400 switches. Upgrade 2900, 3945 to 4431 and 4451 ISR routers

• Used ServiceNow as our ticketing system to create and assign ticket to a specific group.

• Created and assigned self-assign ticket in ServiceNow to complete various projects such as upgrading switches and routers.

• design and implementation engineer, for large-scale/highly visible projects

• As part of the tech refresh project, responsible for design, planning and implementation of network

• Implemented advanced real-time monitoring tools and technologies to oversee network infrastructure.

• Infrastructure refreshes at various large and small admin locations across the US.

• Participate in weekly peer review of team change management activities

• Provide tier 3 technical support to Network Operations Team for tech refresh project.

• Participate in weekly team meeting with management.

• Participate in on-call support activities.

Wyckoff Medical Height Center, New York, NY Jan 2019 – Dec 2021

Network Technician ll

• Configured, installed and supported various network devices such as routers, switches, VoIP phones and wireless.

• Used WhatsUPGold to monitor the network infrastructure.

• Set policies to allow and denied end users traffic through Cisco Firepower Management Center 4410.

• Upgraded Cisco 5510 ASA firewall to Cisco FMC and two FTDs.

• Created site to site VPNs through Palo Alto.

• Managed Palo Alto firewall to whitelist and blacklist users accessing various websites.

• Periodically updated Palo Alto license.

• Used EIGRP as our main routing protocol.

• Configured, installed and supported various network devices such as routers, switches, VoIP phones and wireless.

• Liaised with vendor and other IT personnel for problem resolution.

• Upgraded the entire hospital IDFs from 3550 and 3750 switches to 3850 switches.

• Worked with Nexus switches 2k, 5k, 7k and 9k

• Created HSRP for redundant purposes on our primary and backup core switches.

• Used ASA 5510 firewall to create VPN site to site network as well as inbound and outbound traffic.

• Continuous monitoring and management of the Fiber Light network to ensure alarm receipt and processing procedures are followed.

• Upgraded the entire wireless network infrastructure from Aruba to Cisco by assisting in mounting APs.

• Worked with our main WAN vendor to set up our switch hand-off in our various locations.

Metropolitan Transportation Authority (MTA), New York NY Nov 2017 – May 2018

IT Consultant/Network Technician

Worked with network engineers to perform surveys and cutover stations and offices to new cisco infrastructure

Configured and installed Cisco 3650 /3850 switches

Installed Cisco AERONET 2800 Series Access Points and connected it to the Wireless LAN Controller.

Troubleshot network connectivity issues on both wire and wireless network.

Patched network jacks and re-engineering cable management data closets

Study and document existing infrastructures

Assisted Network Engineers on deploying equipment

Labelled, Patched, and managed cables in IDFs and MDFs.

Used routing protocols such as OSPF, EIGRP and BGP.

NAKOB Healthcare Technologies, New York, NY Feb 2015 – Mar 2017

Network Administrator

• Implemented, maintained and ensured the efficiency of the VLAN infrastructure to support data and voice traffic.

• Installed, configured and tested LAN/WAN Cisco switches and routers.

• Troubleshoot and resolved routing issues using tools on Cisco ASA such as Packet tracer, wire shark, traceroute etc.

• Configured access-list using both ASDM and command line level.

• Troubleshoot layer two switch related issues such as STP, VTP and RSTP.

• Configured OSPF and EIGR protocols on routers.

• Applied HSRP, VRRP and GLBP on LAN routers to achieve 100% network uptime for redundancy.

• Monitored network performance to determine necessary adjustments needed using SolarWinds

• Used OSI model to troubleshoot network connectivity issues to find the root cause of problems

• Replaced antennas, wireless routers, and cable-set boxes and wiring if identified as cause of problem.

• Used fluke and toner to trace a switch and find the configuration on a switch port.

• Configured WAN protocols such as HDLC, PPP and MPLS.

Capital One Bank, New York, NY Aug 2012 – Dec 2014

Network Support Associate

• Installed and configured network routers, switches and security devices with my team members.

• Identified and resolved network related issues and provided technical support.

• Documented network problem/resolution and designs for future reference.

• Traced switch ports and, cables using flukes.

• Maintained inventory of data communication equipment.

• Upgraded Windows XP to Windows 7 and Office 2007 and 2010

• Backed up and restored of all critical resources including router & switches IOS, Outlook, DHCP, DNS using Solar winds.

• Assisted the IT department with various IT-related tasks such as, password recovery, tasks.

• Performed all duties with minimal supervision.

Next Generation, Richmond VA Jul 09 – Jun 2012

IT Support Analyst

• Gathered and maintained inventory of personal computers

• Received and logged requests for support from help desk.

• Monitored progress of requests for support and ensured users were kept informed.

• Troubleshoot and resolved network related issues in a timely manner.

• Assisted the IT department with various IT-related upgrades, projects, and tasks.

• Open to learn new technologies.

Contact this candidate