Christopher Doan Email & Phone Number

San Antonio, Tx, Us

San Antonio, Tx, Us

Reston, Virginia, Us

In my role, I manage the deployment, configuration, administration, and maintenance of network infrastructure, with a focus on Brocade and Cisco Layer 2 Edge, Distribution, and Core switches. My responsibilities extend to configuring Group Policies, DHCP, Print Servers, and Microsoft Server 2016, as well as managing Palo Alto Firewalls and Cisco Identity Services Engine (ISE). In addition to these responsibilities, I assist in network migrations, collaborating with cross-functional teams to plan and execute seamless transitions with minimal operational disruption. My expertise includes configuring and deploying network hardware, applying routing protocols and security measures, conducting pre- and post-migration testing, and facilitating the migration of users, devices, and services. I document configurations, create troubleshooting guides, and provide knowledge transfer to support teams while addressing issues and optimizing performance.I also develop Policy Packet Submission Memos (PPSMs) for firewall changes, create PowerShell scripts to streamline administrative tasks, and perform Security Technical Implementation Guide (STIG) analysis of deployed switches. Additionally, I lead compliance testing in pre-production environments, manage Plexus asset management software and associated SQL databases, and support Authorization to Operate (ATO) processes.I oversee enterprise environment migrations across multiple MTF OUs and networks, ensuring seamless integration into unified Defense Health Agency (DHA) infrastructure. My work includes analyzing and refining Network, Firewall, and Active Directory components to align with DHA standards. I utilize tools like Splunk, Palo Alto, and Putty to analyze subnets and VLANs, ensuring adherence to IP plans and best practices.

Farmington Hills, Mi, Us

As the onsite Technical Lead, I manage and oversee all aspects of domain migration to ensure a smooth and efficient transition. My role involves extensive planning and execution of migration tasks, leveraging technical expertise to minimize downtime and disruption to end-users and systems. A core component of my responsibilities is utilizing PowerShell automation to streamline the migration of data and permissions between file servers, ensuring accuracy and efficiency throughout the process.I establish and manage critical infrastructure components such as Print and DHCP servers, ensuring their functionality during all phases of migration. Additionally, I play a key role in migrating users, security groups, and computer objects within Active Directory from Army, AFnet, and Navy domains to the MJAD domain, collaborating with cross-functional teams to maintain operational continuity. For systems requiring imaging without a Defense Health Agency (DHA) image, I employ PowerShell automation to back up user data across multiple devices securely.A vital part of my role includes providing technical training to onsite staff, enabling them to effectively manage Active Directory, Group Policies, Print and DHCP servers, and SCCM environments post-migration. I also assist in setting up and upgrading computer systems for end-users, addressing their immediate needs while ensuring their systems align with organizational standards.During the migration process, I troubleshoot LAN/WAN connectivity issues to maintain network stability and provide end-user application training as needed to support their productivity in the new environment. My focus is on delivering comprehensive IT support and service to end-users, addressing their technical concerns, and ensuring a seamless migration experience. My approach combines technical proficiency, clear communication, and a commitment to operational excellence, fostering successful transitions across all phases of the migration project.

As the Technical Lead for the Defense Health Agency (DHA) enterprise helpdesk, I was responsible for managing and supervising a team of over 25 helpdesk technicians to ensure high-quality IT support services. I oversaw Remedy ticketing groups, ensuring proper ticket assignment, thorough troubleshooting, and strict adherence to established ticketing protocols and etiquette. A key aspect of my role involved tracking team performance by developing detailed reports, providing constructive feedback, and offering guidance to enhance strengths and address areas needing improvement.I provided technical expertise and policy-based solutions to peers, acting as a resource for resolving complex challenges. By monitoring and analyzing trending issues, I facilitated proactive resolutions, minimizing potential disruptions to operations. My responsibilities extended to configuring and maintaining Microsoft Server 2012 and 2016 to support remote assistance for MTFs, ensuring their technical environments were stable and functional.In managing Active Directory, I handled user accounts, security groups, and computer objects, supporting organizational needs while maintaining strict security and compliance standards. I delivered technical support remotely via desktop and telephone with administrator rights, prioritizing first-call resolution by documenting interactions and troubleshooting efforts comprehensively within the Remedy ticketing system.My role also included managing group and personal mailboxes using DEPO and leveraging tools such as Dameware, Bomgar, Terminal Servers, and others to enhance the efficiency of support operations. I contributed to the development and refinement of the helpdesk's knowledge base, authoring and reviewing articles to ensure the team had access to up-to-date resources. Through leadership, technical expertise, and a focus on process improvement, I ensured the team’s effectiveness in providing exceptional IT support to the DHA.

As the primary point of contact for enterprise services, I provided comprehensive user support by diagnosing, troubleshooting, and resolving technical issues efficiently. Leveraging remote support tools, I addressed hardware, software, and networking challenges, ensuring minimal disruption to user operations. I implemented registry modifications and software adjustments to resolve Windows and application-related issues, delivering effective solutions tailored to user needs.My role included offering extensive support for clinical software and accounts across platforms such as MHS GENESIS, AHLTA, CHCS, Essentris, Q-Flow, and AVHE, alongside a wide range of applications including Windows 7/10, Office Professional suites, DMLSS, Java, Dragon Medical, Adobe Acrobat, Citrix, and printing utilities. I configured and troubleshot Outlook for seamless email functionality and assisted users with new computer setups, VPN connectivity, and wired and wireless network access.I managed software installations using SCCM packages and network repositories, ensuring proper deployment and functionality. Active Directory management was a key responsibility, involving the creation and maintenance of user accounts, security groups, and computer objects. I also handled mobile device management, creating and troubleshooting accounts for Blackberry, Android, and iPhone devices to support user mobility.Using the Remedy ticketing system, I meticulously documented all user interactions, tracking and resolving issues while escalating more complex cases as necessary to ensure timely resolution. My focus on accuracy and thorough communication enabled me to deliver high-quality support and maintain operational efficiency across the enterprise. Through my technical expertise and user-centered approach, I consistently facilitated effective solutions and enhanced the overall support experience for end-users.

Stamford, Ct, Us