Summary
Overview
Work History
Education
Skills
Certification
Timeline
ADDITIONAL INFORMATION
Generic
MICHAEL JULIAN KOJO ADADEVOH

MICHAEL JULIAN KOJO ADADEVOH

ELKRIDGE

Summary

A solution-focused network engineer and Windows/Linux administrator known for high productivity and efficient task completion. I specialize in network engineering, VoIP administration, and Windows/Linux-based environments.

Excellent in communication, teamwork, and adaptability, I have been successful in establishing and maintaining networks and servers. With a proven history of successfully completing short term and long term contracts,I have established and maintained enterprise networks with a strong aptitude for identifying solutions to solve client challenges.


Overview

11
11
years of professional experience
1
1
Certification

Work History

Network Engineer

TEKsystems
05.2025 - 09.2025
  • Assisted as an network configuration and deployment engineer for Cisco network equipment upgrade contract at Med-Star Harbor Hospital
  • -Assisted Network Architect and client engineers with the successful configuration and upgrade deployment of Cisco 8300 Routers
  • -Built new compatible configurations for Cisco 9300 and 9400 catalyst L3 switches set to replace older models
  • Configured dual-stack 9300 L3 switches properly setting the master and slave priorities for planned upgrades.
  • Assisted Network Technicians successful racking and stacking of new network equipment
  • Achieved cost-saving troubleshooting, and developed functional plan to mitigate attenuation issues.
  • Maintained accurate documentation of network configurations and changes.
  • Ensured network security by verifying proper firewall installations and network segmentation

NETWORK ADMINISTRATOR II

System Service Integration
02.2023 - 05.2025
  • Designed, deployed, and managed computer/ telecommunication networks for newly purchased buildings to ensure robust and reliable connectivity
  • Conducted site surveys using Ekahau devices and RF analysis to optimize wireless coverage and performance
  • Assisted in the deployment and maintenance of Cisco and Extreme wireless access points and controllers
  • Configured and deployed Cisco catalyst 8300 series routers
  • Configured and deployed 9200/9300/9500 Cisco catalyst L3 switches
  • Assisted in the initial setup configurations to to Palo Alto PA-440 firewalls and Panorama GUI activation
  • Troubleshooted and resolved Enterprise servers that were in the current disconnected state
  • Made configurations to build backup routers/switches to ensure High Availability on the network
  • Rack and stack of Routers, Switches, Network Appliances
  • Made network configuration changes based on business needs
  • Assisted in Cisco ASA Firewall configurations in testing environments
  • Engaged in Troubleshooting of down network devices/endpoints
  • Deployed images on Access points using Cisco Catalyst 9800-L WLC
  • Engaged in hardware diagnostics/ troubleshooting to determine faulty equipment and replace under warranty
  • Installed, configured, and maintained Windows Server (2016/2019/2022) and Windows 10/11 environments with domain management team
  • Assisted Unified Communications engineers capturing and analyzing RTP/SIP traffic using Wireshark and RTMT during VoIP test calls

NETWORK ADMINISTRATOR I

Montgomery County Government
12.2020 - 07.2022
  • Supported the vaccination and virus testing Metropolitan Area Network for the Montgomery County Government during covid-19 crisis
  • Assisted in the configuration and maintenance of Cisco routers and switches, including Cisco Catalyst and Nexus devices
  • Performed in-depth packet capture analysis using Wireshark to troubleshoot latency issues and optimize network performance
  • Monitored enterprise network infrastructure using SolarWinds, proactively identifying performance bottlenecks, network outages, and hardware failures, reducing downtime by 33%
  • Performed troubleshooting for bin file configurations done by engineers not properly installing on new network devices
  • Performed sub-netting/VSLM for new VLANs on extended network
  • Assisted Avaya Unified Communications team to troubleshoot phone connectivity on 110 block using buttset testing devices
  • Created USB external devices to add images on newly purchased Linux network appliances
  • Deployed MIFI and Cradle Point hotspots at sites for instant uptime during network device downtime
  • Diagnosed and resolved Windows 10 issues clients were experiencing
  • Assisted in troubleshooting Electronic Medical Record failure and issues

SYSTEMS ADMINISTRATOR

Medstar Health
02.2020 - 12.2020
  • Provided 9 month contracted support to the Medstar System Administration team to 35,000+ devices on the Medstar LAN/WAN
  • Assisted MedStar Information Systems departments in the emergency build of Washington Convention Center Hot Site under specific SLA timeline
  • Individually upgraded over 2400 Dell/HP devices to upgraded OS using SCCM PXE boot imaging
  • Assisted Senior Administrators on deploying Microsoft Patches to the domain environment on Microsoft’s Patch Tuesday
  • Built Virtual Machines in VMware ESXI to expand company VDI
  • Deployed and maintained virtual machines (VMs), templates, and snapshots for efficient resource management
  • Went on-site to remote locations to assist with issues on-site support was unable to resolve

VOIP ENGINEER

Tellenger Incorporated
11.2018 - 09.2019
  • Supported a 9 month contract on the USDA east coast SIP hub supporting the VoIP PBX system with 3000+ users
  • Engaged Cisco TACS and assisted in the rebuild of Cisco Call Manager 11
  • Performed 110 block testing and cross-connect tracing to verify analog line connectivity and resolve voice quality issues at user endpoints
  • Utilized butt set tools to test analog lines and voice ports, ensuring proper dial tone and verifying call routing configurations for legacy voice systems.
  • Supported CUCM 11 administration by adding, modifying, and deleting IP phones, users, and device profiles, maintaining accurate system configurations.
  • Troubleshot CUCM 11 call routing issues, including digit manipulation, calling search spaces (CSS), and route patterns, improving call success rates by 20%.
  • Assisted in the configuration and maintenance of MGCP gateways, including PRI setup, port status monitoring, and debugging to resolve call drops and registration failures.
  • Monitored call logs, CDRs, and RTMT alerts within CUCM to proactively identify and address call quality and signaling issues.
  • Collaborated with senior engineers to deploy and test new site integrations in CUCM using MGCP-controlled gateways, ensuring seamless PSTN connectivity.
  • Documented VoIP troubleshooting procedures, including steps for 110 block testing, butt set usage, and CUCM diagnostics to aid in team knowledge sharing and faster incident resolution.

VOIP TECHNICIAN

National Institutes of Health
12.2017 - 10.2018
  • Assisted in migrating voice services from legacy ISDN lines to Cisco VoIP systems, supporting site transitions under the guidance of senior engineers.
  • Helped configure and deploy Cisco IP phones and registered devices to CUCM, ensuring successful provisioning and end-user functionality.
  • Supported testing and validation of call flows post-migration by verifying inbound/outbound calling, voicemail access, and extension dialing.
  • Participated in documenting ISDN circuits, gathering line data, and updating port inventories to prepare for migration cutovers.
  • Shadowed senior technicians during MGCP gateway configuration and learned basic CLI commands to verify voice port status and registrations.
  • Used butt set and 110 block testing tools to verify analog line connections and troubleshoot dial tone or no-ring issues during cutovers.
  • Provided on-site user support during migrations, helping staff transition to new Cisco IP phones and basic VoIP functionalities.
  • Documented troubleshooting steps and assisted in updating internal knowledge base articles related to ISDN-to-VoIP conversions.

INFORMATION TECHNOLOGY TECHNICIAN

CCFX
06.2014 - 12.2017
  • Provided MSP technology Support for 1000+ users from 10+ contracted organizations
  • Responded to high level support calls via RDP sessions and in- person for client windows and mac desktop, laptop, and mobile device troubleshooting
  • Performed imaging of computers using SCCM PXE boot Imaging
  • Installed, configured, and maintained Windows Server 2012/2016
  • Setup network hardware/workstations onsite upon client request
  • Coordinated with EMR vendors to resolve healthcare record issues
  • Performed virus/malware removal and completed tune ups for workstations not functioning properly
  • Ensured successful data backup for client servers using Veeam Backup Software
  • Re-Terminated network ethernet cables for Access Points
  • Assisted in hardware diagnostics and repair
  • Assisted VIP users in person

Education

BACHELOR OF SCIENCE - INFORMATION SYSTEMS

Salisbury University - The Perdue School of Business
12.2014

Skills

  • Cisco Routing
  • Network Security
  • Network Cabling
  • Cloud Services
  • VoIP
  • Wireless Networking
  • Network Monitoring
  • Storage
  • Virtualization
  • Scripting
  • Windows Server
  • Linux
  • PowerShell
  • Active Directory
  • VMware
  • Palo Alto
  • Cisco ASA
  • SCCM

Certification

  • SECURITY+ CE (COMP001021613831) CompTIA Present
  • NETWORK+ CE (COMP001021613831) CompTIA Present

Timeline

Network Engineer

TEKsystems
05.2025 - 09.2025

NETWORK ADMINISTRATOR II

System Service Integration
02.2023 - 05.2025

NETWORK ADMINISTRATOR I

Montgomery County Government
12.2020 - 07.2022

SYSTEMS ADMINISTRATOR

Medstar Health
02.2020 - 12.2020

VOIP ENGINEER

Tellenger Incorporated
11.2018 - 09.2019

VOIP TECHNICIAN

National Institutes of Health
12.2017 - 10.2018

INFORMATION TECHNOLOGY TECHNICIAN

CCFX
06.2014 - 12.2017

BACHELOR OF SCIENCE - INFORMATION SYSTEMS

Salisbury University - The Perdue School of Business

ADDITIONAL INFORMATION

SECURITY CLEARANCE MBI Public Trust Background Investigation

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