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Greg Valker Email & Phone Number

Innovative Information Security and Systems Engineer at ManTech
Location: Bluemont, Virginia, United States 13 work roles 1 school
1 work email found @mantech.com 1 phone found area 877 LinkedIn matched
✓ Verified May 2026 4 data sources Profile completeness 100%

Contact Signals · 1 work email · 1 phone

Work email g****@mantech.com
Direct phone (877) ***-****
LinkedIn Profile matched
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Current company
Role
Innovative Information Security and Systems Engineer
Location
Bluemont, Virginia, United States
Company size

Who is Greg Valker? Overview

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Quick answer

Greg Valker is listed as Innovative Information Security and Systems Engineer at ManTech, a company with 5 employees, based in Bluemont, Virginia, United States. AeroLeads shows a work email signal at mantech.com, phone signal with area code 877, and a matched LinkedIn profile for Greg Valker.

Greg Valker previously worked as Information System Security Officer at Mantech and Information Systems Security Officer at Salient Crgt. Greg Valker holds Bachelor Of Arts, Russian Studies, Political Science, Economics, Anthropology from Illinois State University.

Company email context

Email format at ManTech

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{first}.{last}@mantech.com
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AeroLeads found 1 current-domain work email signal for Greg Valker. Compare company email patterns before reaching out.

Profile bio

About Greg Valker

I am a Seasoned Information Systems Security and Systems Engineer professional with 20+ years of experience delivering results. Innovator and process improvement manager who designs and implements improved security systems saving time and dollars. Lead teams by achieving goals and serving clients. Transform systems and processes, improving productivity, reducing costs, and increasing internal and external customer support. High level of detail, ensuring complicated operations synced. Depth of technology experience in hardware, software, tools, and methodologies. Extensive international experience and travel management. Systematically documents and configures quality outcomes. Delivered extensive training to System Administrators, Security Officers and Managers.14 yrs IT Security Management11 yrs Innovation/Process Improvement7 yrs Leadership/Team BuildingDepartment of State Top Secret Security Clearance – Active, 04/2012, DISCOTECHNOLOGYHW: Smart Card readers, Biometrics Fingerprint Capture Scanners, Configuration & installation of Compaq & Dell Servers, RAID arrays, DLT Tape Jukebox Backup systems, Cisco Catalyst Layer 3 Switches, Cat5 Facility Wiring, Avaya phone systems, RIM Blackberry wireless devices, Document Scanners, Adic Tape Libraries, Cisco VOIP phones, ISTAR ControllersSW: CCURE 800/8000, NT 4.0, Microsoft Exchange 2000, Microsoft Active Directory implementation & migration, Microsoft SMS, TCP/IP, DHCP, DNS, Remedy, Oracle client installation & configuration, Symantec Ghost, Symantec Anti-virus server, Microsoft Terminal Services, Windows XP Remote Assistance, Cisco IOS, Argent Monitoring Services, Cisco Call Manager, Unity Voicemail, AltirisDomain/Functional Areas: Information Assurance, Network Consulting, Network Design, Project Management, LAN/WAN Administration, Microsoft Exchange AdminTools/Methodologies: Systems Management Tools, Microsoft Active Directory, Writing Batch Files, Microsoft Baseline SecurityAWARDSVerizon Enterprise Solutions: Performance Excellence Spotlight, Teamwork SpotlightEDUCATIONMaster of Science in Cybersecurity, Western Governors University expected 2022Bachelor of Arts, Russian Studies & Political Science, Illinois State UniversityTrainingCCURE 800/8000 Advanced IntegrationCCURE 800/8000 Installer/Maintainer with ISTARAdministration & Configuring of Argent Extended TechnologyCisco IP TelephonyCisco Building Multi-layered Switched NetworksSecuring Data Networks, Diplomatic Security ServicesInterconnecting Cisco Network DevicesEnglish, Russiangreg.valker@valker.net

Listed skills include Security, System Administration, Integration, Information Assurance, and 46 others.

Current workplace

Greg Valker's current company

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ManTech
Mantech
Innovative Information Security and Systems Engineer
2251 Corporate Park Drive, Herndon, Virginia 20171, us
Website
Employees
5
AeroLeads page
13 roles

Greg Valker work experience

A career timeline built from the work history available for this profile.

Information System Security Officer

Current

Herndon, Virginia, US

ISSO on contract to Federal government. Responsible for A&A and continuous monitoring of high systems. Tracking and resolution of information spills, Ensuring compliance with regulations. Implementation of NIST Cybersecurity Framework. Utilizing Tenable Security Center for thorough compliance and vulnerability scanning. Collaborating with team of SMEs on.

Oct 2021 - Present

Information Systems Security Officer

Fairfax, VA, US

ISSO on contract to Federal government. Responsible for A&A and continuous monitoring of high systems. Tracking and resolution of information spills, Ensuring compliance with regulations. Implementation of NIST Cybersecurity Framework

Oct 2020 - Sep 2021

Information Systems Security Officer

Basking Ridge, NJ, US

  • Scope: Led team integrating new site system and recertified ATO with government
  • Vulnerability Remediations: Spearheaded and collaborated system projects with multiple technical teams, scanning and implementing vulnerability remediations before deadlines; SLAs tracked in the POA&M
  • Executive Report Schema: Designed Security team reporting schema delivering more accurate aggregate picture to executives on change management procedure
  • System Innovation: Drove system improvements resulting in government client acceptance of 3rd site addition
  • Penetration Testing: Successfully coordinated multiple 3rd party penetration system tests
  • System Migration: Coordinated information gathering and documentation creating package for ATO on system migrating from SP800-53 rev 3 to SP 800-53 rev 4
May 2015 - Oct 2020

Information Assurance Instructor, United States Department Of State

Alexandria, VA, US

  • Scope: Taught Information Assurance for System Administrators and Information System Security Officers and Managers; extensive international travel and logistics coordination
  • Training Development: Designed and implemented training with communication methodology; resulted in inspiring discussion for Information Assurance and Cybersecurity roles, including System Administrators, ISSOs.
  • Travel Logistics: Organized travel and training logistics for multi-country extended itineraries
Jun 2011 - May 2015

Consultant

Blue Bell, Pennsylvania, US

  • RFITV Contract for PM J-AIT US Army Windows Information Assurance Team Lead
  • Workstation Baselines: Created, documented, scanned workstation baseline images ensuring compliance with security requirements
  • Security Accreditation: Enforced security regulations maintaining project security accreditation
  • Leadership: Supervised Windows team tactical operations achieving long-term goals of client/team
  • Project Management: Developed & executed project plans for office & server room moves including emergency server relocation from Reston, VA to Germany
  • Innovation: Improved methodology for creating baseline images for security compliance requirements
Oct 2007 - Jun 2011

System Administrator

Tampa, Florida, US

Administered RightFax Server. Customized Argent Monitoring Software. Created Alert Macros and interfaced with APC UPS and environmental units via SNMP. Deployed SMS client to workstations and provided management with reports of statistics on an as needed basis. Created MS Visio drawings of server room physical and logical layout.

Oct 2006 - Sep 2007

Systems Engineer

Chicago, IL, US

  • Compliance: Collaborated with multiple teams ensuring Sarbanes-Oxley compliance
  • Process Improvement: Streamlined and improved process for administration of Rightfax server
  • Innovation: Improved customization methodology of Argent Monitoring Software by creating Alert Macros and Interfaced with APC UPS and environmental units via SNMP
  • Deploy Management: Streamlined SMS client deployment to workstations; regularly informed management of progress with statistical analysis
  • Documentation Accuracy: Increased documentation accuracy by creating MS Visio drawings of server room physical and logical layout; improved documentation of Policies and Procedures for on-site audits
  • Virtual Server Maintenance: Administered EMC Virtual Infrastructure client maintaining virtual servers
Jul 2006 - Sep 2007

Field Services Team Leader

Belleair Bluffs, Florida, US

Scope: Planned and implemented projects for multiple support clients, interfacing with vendors; advocated for clients; managed workload and set objectives; designed and built Windows 2003 Active Directory Domains

Nov 2005 - Mar 2006

Southwest Asia Network Engineer

Reston, Virginia, US

Scope: Designed configuration files and IP schema plan for Cisco Catalyst 6509, Cisco Catalyst 6513 and Cisco 3750 switches for core network installed at Victory Base, Baghdad, Iraq

Jan 2005 - Oct 2005

Senior System Analyst

Melbourne, Florida, US

Scope: Managed teams deploying hardware, software, and training at US Consulates and Embassies

Aug 2003 - Jan 2005

Voice/Data Network Analyst

Bryanston, Johannesburg, ZA

  • Managed voice/data/security infrastructure
  • Facilitated office construction and relocations
  • Ensured data security both through applying necessary patches and configurations, as well as educating users in ways to combat social engineering
  • Maintained local PBX, voicemail, data servers, routers, data switches and site security
  • Implemented 2000 Active Directory schema for both domain and exchange company integration
  • Supported wireless applications and tools, such as Blackberry Enterprise Server System
May 2000 - Aug 2003

Wide Area Network Analyst

Skokie, Illinois, US

  • Ensured optimum performance of clients’ wide area networks and notified them of outages within ten minutes of outage
  • Initiated and escalated circuit service tickets with telecommunications service providers
  • Created reference database and website to expedite diagnosis and notification process for helpdesk staff
  • Interacted with customers of varying technical experience
  • Utilized HP Openview to monitor performance of Cisco Routers and Switches on client networks
  • Documented problems and solutions to facilitate future diagnostics and procedures
Feb 2000 - May 2000

Network Analyst

Bangalore, Karnataka, IN

  • Facilitated regional data infrastructure and user support for six area offices, involving monthly onsite visits
  • Implemented Y2K preparations and upgrades for all six area offices
  • Troubleshot server, workstation and network hardware and software issues
  • Communicated with customers of differing degrees of technical experience
  • Installed and replaced internal components of servers
Jun 1997 - Feb 2000
Team & coworkers

Colleagues at ManTech

Other employees you can reach at mantech.com. View company contacts for 5 employees →

1 education record

Greg Valker education

  • Illinois State University
    Illinois State University
    Anthropology
FAQ

Frequently asked questions about Greg Valker

Quick answers generated from the profile data available on this page.

What company does Greg Valker work for?

Greg Valker works for ManTech.

What is Greg Valker's role at ManTech?

Greg Valker is listed as Innovative Information Security and Systems Engineer at ManTech.

What is Greg Valker's email address?

AeroLeads has found 1 work email signal at @mantech.com for Greg Valker at ManTech.

What is Greg Valker's phone number?

AeroLeads has found 1 phone signal(s) with area code 877 for Greg Valker at ManTech.

Where is Greg Valker based?

Greg Valker is based in Bluemont, Virginia, United States while working with ManTech.

What companies has Greg Valker worked for?

Greg Valker has worked for Mantech, Salient Crgt, Verizon Enterprise Solutions, Federal Security Management, Edgesource, and Unisys.

Who are Greg Valker's colleagues at ManTech?

Greg Valker's colleagues at ManTech include Jonathan Caraballo, Pallavi Sharma, Bob Hardin, G Mahesh, and Benton (Us).

How can I contact Greg Valker?

You can use AeroLeads to view verified contact signals for Greg Valker at ManTech, including work email, phone, and LinkedIn data when available.

What schools did Greg Valker attend?

Greg Valker holds Bachelor Of Arts, Russian Studies, Political Science, Economics, Anthropology from Illinois State University.

What skills is Greg Valker known for?

Greg Valker is listed with skills including Security, System Administration, Integration, Information Assurance, Active Directory, Networking, Troubleshooting, and Information Security.

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