Jobs in the United States

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Added 9 hours ago
Automation and Analytic Modeling Engineer
LV8D Solutions
Chantilly, VA
…exploitation capabilities. The Automation and Analytic Modeling Engineer serves as a senior engineering professional responsible for developing, implementing, and optimizing advanced…
Added 9 hours ago
Exercise Execution Systems Engineer
LV8D Solutions
Chantilly, VA
LV8D Solutions is seeking an Exercise Execution Systems Engineer to lead the development of exercise concepts, test objectives, execution plans, and performance assessments while…
Added 10 hours ago
Software Engineer / Senior Software Engineer / TS/SCI Polygraph Required
LEIDOS, INC.
Bethesda, MD
Clearance and Citizenship: MUST Possess a TS/SCI Polygraph and MUST be a US Citizen as required by this customer · Security Clearance Requirement - All candidates MUST possess an active TS/SCI with polygraph security clearance
Added 10 hours ago
Senior Information Systems Security Officer (ISSO)
Global Dimensions, LLC
Reston, VA · Washington, DC
The Senior ISSO will oversee and support Risk Management Framework (RMF) processes, security assessments, compliance activities, and Authorization to Operate (ATO) efforts throughout the…
Added 13 hours ago
Cyber Network Analyst
Leidos
Hampton, VA
Experience with Cyber-analysis or system-admin experience - at least some within the last two years
Added 14 hours ago
SME Systems Architect
KDA Consulting Inc
Herndon, VA
Security Clearance: Must possess an active TS/SCI with Polygraph
Added 22 hours ago
Senior Principal Systems Engineer / SME (Cyber & Analytics)
RTX
United States
Qualifications You Must Have:
Added 1 day ago
Senior Cyber Platform Engineer
CACI, INC.-FEDERAL
Chantilly, VA
Minimum Clearance Required to Start: TS/SCI with Polygraph
Added 1 day ago
BA
DevOps Engineer, Senior
Booz Allen Hamilton
Aurora, CO
- $77,600 to $176,000 USD / year
As a senior platform DevOps engineer at Booz Allen, you can use your technical skills to affect mission-for
Added 1 day ago
Senior Systems Engineer
Cherokee Federal
Chantilly, VA
This position requires an active TS/SCI with Polygraph clearance.
Added 1 day ago
Senior Optical Network Engineer
Peraton
Laurel, MD
We are seeking a skilled Optical Network Engineer with hands-on expertise in Ciena platforms and Service-Aware Operating System (SAOS) to design, deploy, and support our growing high-speed…
Added 1 day ago
Senior Cyber Platform Engineer
CACI
Chantilly, VA · Chantilly
Minimum Clearance Required to Start: TS/SCI with Polygraph
Added 1 day ago
Information Systems Security Manager (ISSM)
Mantis Security Corporation
Reston, VA
Must possess current DoD 8570 IAT II or IAM II certification
Added 1 day ago
Senior ForeScout Engineer - Active TS/SCI with CI Poly
ENS Solutions, LLC
Reston, VA
…solve complex security challenges. You will lead a team as they engineer solutions to complex challenges for customers using knowledge of network engineering, Active Directory, and system…
Added 1 day ago
Senior ForeScout Engineer - Active TS/SCI with CI Poly
ENS Solutions, LLC
Washington, DC
…solve complex security challenges. You will lead a team as they engineer solutions to complex challenges for customers using knowledge of network engineering, Active Directory, and system…
Added 1 day ago
ForeScout Engineer - Active TS/SCI With CI Poly
ENS Solutions, LLC
Washington, DC
…solve complex security challenges. You will lead a team as they engineer solutions to complex challenges for customers using knowledge network engineering, Active Directory, and system…
Added 1 day ago
ForeScout Engineer - Active TS/SCI With CI Poly
ENS Solutions, LLC
Reston, VA
…solve complex security challenges. You will lead a team as they engineer solutions to complex challenges for customers using knowledge network engineering, Active Directory, and system…
Added 2 days ago
Senior Boundary Network Systems Engineer
CACI International
Linthicum Heights, MD
Seeking a System Engineer professional to lead the design, implementation, and management of the security and operational boundaries that separate the organization’s internal networks from…
Added 2 days ago
Tier 3 Ground Terminal (GT)/ IT Engineer- Junior, Intermediate and Senior Level- TS/SCI with Polygraph
GD Information Technology, Inc.
United States
The T3 GT / IT Engineer must have:
Added 3 days ago
MG
Senior Network Engineer - TS/SCI w CI Poly
Modern Government Solutions
McLean, VA
- $160,000 to $200,000 USD / year
Must possess an active DoD TS/SCI with CI Polygraph security clearance
Added 3 days ago
Sr. Interdisciplinary Systems Engineer / Architect, AWS Bespoke Solutions
Amazon Development Center U.S., Inc.
Jessup, MD
This position requires that the candidate selected must currently possess and maintain an active TS/SCI security clearance. The position further requires that, after start, the selected…
Added 3 days ago
Amazon Dedicated Cloud Engineer, US ADC Security
Amazon.com Services LLC
Herndon, VA
The US ADC Security Engineering team is seeking an experienced ADC Engineer to serve as a senior technical leader for our operations team. You will be the technical escalation point for the…
Added 4 days ago
AB
Senior Security Engineer
Absolute Business Solutions Corp
Bethesda, MD
- $110,000 to $225,000 USD / year
ABSC has an exciting opening for a TS/SCI-cleared Senior Security Engineer supporting DIA-NDOC under the DTP contract. This hands-on technical lead will direct day-to-day security…
Added 4 days ago
Field Engineer
The Swift Group
United States
US citizenship and an active TS/SCI with Polygraph security clearance required
Added 4 days ago
Senior. Platform DevOps Engineer (Onsite)
RTX
United States
Qualifications You Must Have

ENS Solutions, LLC

ForeScout Engineer - Active TS/SCI With CI Poly

Reston, VA, United States

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Job details

Posting language: English
Posted: Apr 14, 2026

Original job description

On our expert team, you’ll perform work focused on implementing and operating next generation security solutions for government and commercial clients. You’ll perform hands-on evaluation, implementation, and operation of leading security cyber defense tools and technologies, and apply in-depth defense strategies to large and complex networks to rapidly identify vulnerabilities and threats, prioritize response actions, and develop effective countermeasures. You’ll apply thought leadership in a highly collaborative and innovative work environment to solve complex security challenges. You will lead a team as they engineer solutions to complex challenges for customers using knowledge network engineering, Active Directory, and system administration.

In this role, you'll closely impact mission success, protecting data and networks from malicious payloads and actors. With mentoring, challenging hands-on problem-solving, and opportunities to learn new tools and skills, we focus on growing as a team to make the best solutions for our customers. Work with us as we secure and protect our nation's most sensitive capabilities.

What You’ll Work On:

Develop relationships quickly and easily with other teams, communicating the complexities of security with a wide variety of audiences, including senior management.
Manage infrastructure and cybersecurity controls, including enhanced detection and vulnerability capabilities and improved event correlation in large enterprises.
Contribute to risk and vulnerability assessments in network, system, and application areas, and leverage big data analytics and traditional security event types to identify advanced threats or indicators of compromise.
3+ years of experience performing systems administration for Windows or Linux, including performing basic troubleshooting and installation or configuration, monitoring system performance or availability, and performing security upgrades
Experience with the deployment or daily maintenance of ForeScout CounterACT appliances
Experience with network engineering, including physical or logical such as installation and activation of ports, configuration of switches, and LANS, VLANS, and network FW, or appliances or network administration services such as Active Directory, Guests LANS, and domain management
Knowledge of multi-domain architectures, including data center, WAN, and LAN in virtualized architectures
TS/SCI clearance with the ability to obtain a counter-intelligence polygraph.
HS diploma or GED and 7+ years of experience with supporting IT projects and activities, Associate’s degree and 5+ years of experience supporting IT projects and activities, Bachelor’s degree and 3+ years of experience supporting IT projects and activities, or Master’s degree and 1+ years of experience supporting IT projects and activities.
A DoD 8570 IAT Level III Certification such as SecurityX (formerly CASP+), CCNP Security, CISA, CISSP (or Associate), GCED, GCIH, CCSP certification within 30 days of start date
Ability to obtain a DoD 8570 Cybersecurity Service Provider - Infrastructure Support Certification (CSSP-IS), including CEH, CySA+, GICSP, SSCP, CHFI, CFR, Cloud+, or CND Certification, prior to start date on the contract.

Additional Qualifications:

ForeScout Certified Administrator (FSCA) and/or ForeScout Certified Engineer (FSCE) certifications
Knowledge of federal information security policies, standards, procedures, directives, frameworks, federal security authorizations, assessment, and risk management processes for enterprise systems
Ability to install and deploy ForeScout in a multidomain customer environment
Ability to integrate cybersecurity data using enterprise or custom tools data aggregation and analysis tools, including Splunk
Ability to provide support in a Tier II IT operations and maintenance role, including ticket work information updates, issue responses, and remediation
Ability to be a self-starter, work without considerable direction, and work with a team
Possession of excellent verbal and written communication skills, including for coordinating efforts and establishing customer relations

Essential Network Security (ENS) Solutions, LLC is a service-disabled veteran owned, highly regarded IT consulting and management firm. ENS consults for the Department of Defense (DoD) and Intelligence Community (IC) providing innovative solutions in the core competency area of Identity, Credential and Access Management (ICAM), Software Development, Cyber and Network Security, System Engineering, Program/Project Management, IT support, Solutions, and Services that yield enduring results. Our strong technical and management experts have been able to maintain a standard of excellence in their relationships while delivering innovative, scalable and collaborative infrastructure to our clients. Why ENS?

Free Platinum-Level Medical/Dental/Vision coverage, 100% paid for by ENS
401k Contribution from Day 1
PTO + 11 Paid Federal Holidays
Long & Short Term Disability Insurance
Group Term Life Insurance
Tuition, Certification & Professional Development Assistance
Workers’ Compensation
Relocation Assistance

Candidate AI Usage Policy AI tools are an important part of daily work at ENS Solutions, and we are committed to their responsible and ethical use. To ensure a fair and equitable candidate evaluation based on individual skills, knowledge, and experience, candidates are not permitted to use artificial intelligence or other assistive tools during interviews, whether in person or virtual, unless explicit permission has been granted in advance.

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Jobs in the United States