Tim Walter
Manassas,VA
Overview
8
8
years of professional experience
1
1
Certification
Work History
Systems Integration Engineer
Leidos
08.2023 - 08.2025
- Supported NGA GEOAxIS ICAM systems ensuring secure authentication across classified networks.
- Applied STIGs and hardening procedures to meet DoD cybersecurity requirements.
- Authored detailed documentation to streamline integration, enhance troubleshooting efficiency, and ensure audit readiness.
- Monitored, analyzed, and resolved over 300 JIRA technical support tickets related to security, access, and integration efforts for NGA customers with GEOAxIS Identity, Credential, and Access Management (ICAM) systems, ensuring secure and seamless authentication across classified environments.
- Served as the primary point of contact (POC) for all Federal Information System Controls Audit Manual (FISCAM) activities within the GEOAxIS program, coordinating directly with FISCOM representatives to ensure continuous compliance and audit readiness.
- Evaluated and validated Authorization to Operate (ATO) packages within Xacta, ensuring required security controls were implemented
- Authored comprehensive internal and consumer-facing documentation to streamline integration processes, reduce troubleshooting time, and enhance the overall user experience for GEOAxIS deployments.
- Served as the primary lead for JIRA ticket resolution, successfully managing and closing over 300 technical support and integration tickets, driving issue resolution, and improving service delivery timelines.
IT Specialist
Defense Intelligence Agency (J21-2 - NMCC)
11.2020 - 08.2023
- Managed system administration and account authentication for classified intelligence products, ensuring compliance with DIA security guidelines.
- Maintained secure operations of JWICS Apple iOS/Linux systems; applied agency-approved security configurations.
- Managed and scheduled robust virtual telecommunication conference (VTC) suites over three networks and four rooms supporting Joint Staff personnel
- Oversaw Joint Staff J2 branch asset management program for over 485+ assets across three networks; valued at $1.2 million dollars
Cyber Systems Operator
United States Air Force
02.2018 - 11.2020
- Applied Security Technical Implementation Guides (STIGs) to SIPR and JWICS desktop systems, ensuring compliance with DoD cybersecurity standards and hardening configurations across over 180 classified workstations.
- Server administrator for ISSE (Information Support Server Environment) cross-domain solution for three Air Force (AF) squadrons; supporting bi-lateral intelligence dissemination between secret (SIPR) and top secret (JWICS) networks
- Managed specialized Air Force baseline image for over 180+ SIPR and JWICS systems, maintained system and hardware compatibility with Lockheed Martin applications; coordinating with software developers (PMO) in Kessel Run to support kinetic targeting for intel analyst and warfighters
- Conducted 200+ remedy ticket resolutions; troubleshot network, account and hardware related issues
- Introduced problem solving solutions and mentored peers
- Maintained 625 Global Command and Control System (GCCS) accounts through system's active directory, as well as, managed accounts Air Force wide through directory rights access (DRA)
- Overhauled units $1.4 million dollar network infrastructure, renovating and running fiber optics from unit offices to network switches and patch panels
Education
MBA - DoD Project Managment
American Military University
Charles Town, WV08-2025
Bachelor's degree - Homeland Security
American Military University
Charles Town, WV01.2023
Associate's degree - Weapons of Mass Destruction Preparedness
American Military University
Charles Town, WV01.2023
Associate's degree - Counter Terrorism studies
American Military University
Charles Town, WV01.2022
General Studies -
Palm Beach State College
Palm Beach Gardens, FL01.2018
Skills
- TS/SCI Clearance w/ Counterintelligence Polygraph
- DoD 8140/8570 IAT Level II (Security) Certified
- Risk Management Framework (RMF) Implementation & Compliance
- Security Control Assessment (SCA) & ATO Support
- FISMA & FISCAM Compliance POA&M Tracking
- Security Technical Implementation Guides (STIGs) DISA Hardening
- Vulnerability Management Nessus
- Xacta JIRA Service Remedy Ticketing Systems
- Windows Server Red Hat Linux Active Directory Administration
- Zero Trust SAML, OAuth, OIDC Apache WebGates Oracle Access Manager
- Docker VMware vSphere AWS (EC2, IAM)
- Commercial Off-the-Shelf (COTS) & Government Off-the-Shelf (GOTS) Solutions
- Non-Person Entities (NPEs) & Person Entities (PEs) Account Management, DoD PKI Certificate Administration
Certification
Security+, CompTIA, 07/01/24, 07/01/27
Timeline
Systems Integration Engineer
Leidos
08.2023 - 08.2025
IT Specialist
Defense Intelligence Agency (J21-2 - NMCC)
11.2020 - 08.2023
Cyber Systems Operator
United States Air Force
02.2018 - 11.2020
MBA - DoD Project Managment
American Military University
Bachelor's degree - Homeland Security
American Military University
Associate's degree - Weapons of Mass Destruction Preparedness
American Military University
Associate's degree - Counter Terrorism studies
American Military University
General Studies -
Palm Beach State College
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