Aaron Sindelar Email & Phone Number

Fort Huachuca, Arizona

Sierra Vista, Arizona, United States

•Manage team of four system administrators ranging from associate’s to Subject Matter Expert’s (SME’s)•Responsible for compliance of McAfee products on over 300 physical workstations, 800 servers, and 500 Virtual Machines across multiple domains and ensuring systems are in the correct containers in the ePO•Utilize scripts to remotely check systems into ePO or initiate Windows Server Update Services (WSUS) force check-in actions on systems within specific active directory OU’s•Responsible for the testing and implementation of group policy changes for the enterprise whether to meet STIG compliance or operational goals/demands•Ensured monthly Authorized Service Interruptions (ASI’s) were submitted for Desktop and Server Windows patches and at least one administrator was present in case HBSS actions were needed during the ASI•Responsible for patching and maintaining the NIPR/SIPR baseline image for Virtual Desktop Infrastructure (VDI)•Responsible for approving NIPR/SIPR patches on the WSUS server and ensuring over 1100 systems are checking in and downloading/installing the patches•Used InstallRoot to ensure certificate store is updated with latest certificates•Responsible for implementing DISA STIGs on all physical workstations, servers, and virtual systems in preparation for CCRI•Performed IAVA vulnerability scans using SCAP and ACAS scanning software•Ensured assets were scanned in ACAS as required, that asset lists were continuously updated as systems were built or decommissioned, and verified IP addresses were in the correct scan zones•Responsible for analyzing vulnerability scanning activities and tracking and reporting on vulnerabilities to include POA&M submittals•Briefed our POA&M's weekly to Government leadership for their review and to answer any questions

Fort Huachuca, Az

•Responsible for AD account creation, adding/modifying groups, tweaking attributes, enabling/disabling accounts, renewing service account passwords, transferring accounts between ou’s, and deleting accounts across multiple domains•Responsible for troubleshooting local network issues involving our Dynamic Host Configuration Protocol (DHCP) servers whether it was replication issues or failover issues, or duplicate IP conflicts •Responsible for troubleshooting user issues with the Windows Operating System (OS), reviewing system error logs, as well as supporting any physical hardware issues such as monitors, peripherals, or uninterruptible power supplies (UPS)•Responsible for the imaging and patching of NIPR/SIPR desktops, laptops, and tablets through the use of Microsoft Endpoint Configuration Manager (MECM, formerly SCCM) and WSUS•Responsible for compliance for over 300 physical workstations, 800 servers, and 500 VM's across multiple domains with the help of ACAS scanning, WSUS reporting, and MECM reports•Responsible for profiling ClearCubes and updating firmware for use in our virtual environment through the use of the Teradici Management Console (TMC)•Responsible for creating, updating, testing, and deploying appstacks via AppVolumes Manager and provisioning VM’s•Responsible for monitoring the status of VM’s through the use of VMware Horizon View Administrator•Used Remedy IT Service Management (ITSM) web application to track, manage, update, and resolve tickets submitted by our customers based on their priority (critical, high, medium, low) and within the Service Level Target set by the Information Technology Infrastructure Library (ITIL) process•Documented resolutions to technical issues on team SharePoint site so other administrators could quickly troubleshoot and resolve issues if they occurred again•Provided higher level troubleshooting to assist the other admins•Participated in rotational on-call duties to provide after-hours support

Fort Huachuca, Az

•Performed team assessments and monthly performance reviews.•Managed Enterprise E-mail workflow queues and monitored their status.•Responsible for ticket workflow, escalation, and coordination of incident resolution efforts.•Increased the effectiveness and efficiency of the team through coordination and communication between team functions.•Responsible for coordinating troubleshooting efforts between Defense Information Systems Agency (DISA) and Army for the Continental United States.•Trained new personnel the roles and responsibilities of a Department of Defense Information Network – Army (DoDIN-A) support analyst.•Served as primary liaison with DISA for Enterprise Email cleanup after a Negligent Disclosure of Classified Information (NDCI) occurred.•Responsible for quality situational awareness notifications and coordinating the development of Executive Summaries, After-Action Reports, and Critical Incident Reports.•Responded to queries and requests for computer security information reports. Worked under some supervision, but expected to utilize independent judgment and initiative. Work was reviewed for soundness of technical judgment, overall adequacy, attention to detail, and accuracy.

Joint Base Elmendorf-Richardson, Ak

•Oversaw all U.S. Army Alaska active user accounts.•Fully accountable for communications equipment valued at $50,000.•Ensured all paperwork was completed accurately and within time schedules.•Managed escalations in accordance with applicable Service Level Agreements.•Investigated network security violations and prepared detailed incident reports.•Installed, configured, administered, and troubleshot user workstations and associated peripheral devices.•Coordinated Authorized Service Interruptions (ASI’s) with DISA and made sure affected units concurred with the ASI.•Investigated network security violations and prepared detailed incident reports.•Managed personnel and training records for 59th Signal Battalion using Microsoft Access, Digital Training Management System (DTMS), and paper filing system.•Provided network management for all critical network systems for three United States Army Alaska (USARAK) installations while overseeing classified and unclassified, voice, video, data, and special purpose systems. •Assisted with Information Assurance, baseline network configurations compliance, and asset management. •Liaison between the Local Network Enterprise Center and the Pacific Regional Cyber Center.