Arnold Ntumy

Systems Administrator

Trinitech Consulting INC

Beltsville, MD

04.2020 - 01.2024

Experienced in system performance tuning, increasing the performance of a Windows system.
Configure File and Print Sharing, as well as setting up a Print Server.
Experience with virtualization (VMWARE AND HYPER-V). Built, installed, and configured brand new physical and virtual servers, as well as bridging the guest virtual machines to communicate with other physical systems in the network.
Experience with NOS and server hardware port inventory.
Responsible for building, installing, and configuring Windows 7, 8, 10, and 11 NOS systems and deploying them in a production environment.
Responsible for building, installing, and configuring Windows Server 2008 and 2019 on VMware. Building and configuring a file server on an AWS Windows 2019 EC2 instance used for corporate cloud storage.
Created and set up shares on the cloud file server, as well as mapped network drives from on-premise systems to the cloud share.
Configured and promoted standard Windows 2019 servers to a domain controller, installed and configured Active Directory domain services, DNS services, Group Policies, promoted a Windows 2008 server to a domain controller, and used the server as a backup server.
Configured Windows NOS client systems to join the Domain, as well as configured file and print sharing on some Windows workstations to enable resource sharing.
Responsible for introducing Windows servers 2019 and 2008 to the network by assigning them hostnames, static IP addresses, Default Gateway addresses, and DNS addresses.
Responsible for setting up user and security management. Created and managed domain user accounts. Also, created domain resources, such as shares, printer resources, and others.
Responsible for creating standard user accounts, administrator accounts, and user profiles in Windows NOS systems and Linux systems.
Responsible for diagnosing, troubleshooting, and resolving operating systems and application malfunctions, desktop malware-related problems on various Windows NOS systems.
Supported system users and troubleshooting system issues. Document solutions for future reference.
Responsible for addition of a Hard Drive to a Windows system for additional data storage.
Designed and built a network using the Cisco Packet Tracer simulator tool.
Experience in resolving network-related problems. Using TCP/IP troubleshooting tools to diagnose, troubleshoot, and resolve network and connectivity-related problems, including DHCP, DNS, IP addresses, subnet mask, and default gateway related problems in a network.
Create and configure an S3 bucket for storage of data. Create and attach EBS volumes to EC2 instances.
Build, configure, and introduce UNIX/Linux servers to the network.
User and security management in UNIX/LINUX and implementing the AAA.
Responsible for spinning up AWS RHEL8 and Windows Server 2019 EC2 instances.
Create IAM users, groups, policies and configure Multi-Factor Authentication (MFA) required for cloud system authentication and authorization.