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Software Engineer Intern
JM Flex Solutions LLC
FL
As a Software Engineer Intern, you will gain hands-on experience supporting software development, data, and AI initiatives. Your contributions will help streamline business processes,…
Added 1 min ago
Manufacturing Engineer
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The Manufacturing Engineer is responsible for designing, developing, and optimizing manufacturing processes to improve efficiency, quality and safety. This role supports production by…
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Robotics Control Engineer
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As the need for nuclear energy grows, the future couldn’t be brighter. Join our vital mission to create lasting solutions for our planet’s greatest challenges. In this role, you are ready…
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M365 Automation & SharePoint Solutions Engineer
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E-INFOSOL LLC is seeking a motivated and results-driven M365 Automation & SharePoint Solutions Engineer to be a full-time employee in Washington, DC to join our innovative and…
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Release Train Engineer
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…metropolitan area. We specialize in building modern and tailored solutions to support our customers’ mission. As a mission-first organization, we deliver Subject Matter Expertise (SME) in…
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Senior Forward Deployed Solutions Architect, Large Pharma
SAS
UNAVAILABLE, NJ
- $136,948 to $167,380 USD / year
In this role, you will operate as an embedded consultant and forward‑deployed engineer, working closely with business, data science, engineering, and IT teams at the customer site in New…
Added 4 mins ago
Data Analytics & Visualization Engineer
Leidos
Scott Air Force Base, IL
The Leidos Digital Modernization Group seeks a Data Analytics & Visualization Engineer for the Global Solution Management – Operations II (GSM-O II) contract, under the Global Automations &…
Added 4 mins ago
Data Analytics & Visualization Engineer
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The Leidos Digital Modernization Group seeks a Data Analytics & Visualization Engineer for the Global Solution Management – Operations II (GSM-O II) contract, under the Global Automations &…
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ETS Developer IV- Core Payments
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We are looking for an experienced Digital Engineer to provide technical leadership and direction across Digital, with a focus on security, technology strategy, architecture, and…
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Senior Test Engineer
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- $71,000 to $105,000 USD / year
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Technical Support Engineer, Distributed Infrastructure (D-IT)
Eaton Corporation
Woodridge, IL
- $69,000 to $101,000 USD / year
The Technical Support Engineer provides expert technical support for power and connectivity-related equipment, including charging solutions, UPS systems, digital signage solutions, network…
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Software Engineer
Popular Bank
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Added 5 mins ago
Software Engineer
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Communications Network Engineer Mid
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TEKsystems currently has an opening for a Communications Network Engineer, Mid level position.
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Software Engineer II
Amentum
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Amentum is a global leader in advanced engineering and innovative technology solutions, trusted by the United States and its allies to address their most significant and complex challenges…
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Mainframe Technical Engineer
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…design, development, and maintenance of our Mainframe technical solutions, ensuring their efficient and reliable operation. This position will be responsible for contributing to our…
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AI Automation Architect - Manufacturing and MES processes- Remote
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…Knowledge Platform activates enterprise intelligence by unifying data, knowledge and business context to achieve tangible outcomes. With Teradata, organizations can provide agents with full…
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Account Executive (Central)
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Delivery Practice Manager - AI/ML, Data & AI (ProServe)
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Chief Engineer For Historical Museum
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The Chief Engineer leads the engineering team and oversees the safe, efficient, and reliable operation of all building machinery and systems. This role manages comprehensive fire and life…

System One

Cyber Security Engineer

Merrifield, VA, United States

Contract

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Job details

Job type: Contract
Apply by: Feb 3, 2027
Posting language: English
Posted: Nov 5, 2026

Original job description

Title: Cybersecurity Engineer Location: Remote or hybrid (Vienna, VA or Winchester, VA or Pensacola, FL) Pay Rate: Open to W2 options (no c2c) Position Type: Contract

We are currently seeking a Cybersecurity Engineer for a long term contracting position. This position can be either remote or hybrid in Vienna, VA or Winchester, VA or Pensacola, FL. We are ideally looking for candidates with 8-10 years of professional experience. We are able to work with W2 folks (no c2c).

Candidates must have a minimum of 5 years of direct, hands-on application whitelisting/application control experience with specific hands-on WDAC, AppLocker, ThreatLocker, or Airlock Digital experience. We are not looking for candidates whose backgrounds are limited to general SOC monitoring, vulnerability management, or standard endpoint security administration. In addition, hands-on Microsoft Defender expertise and KQL are required.

This role focuses on enterprise endpoint security operations, with a primary emphasis on implementing and managing application whitelisting/application control technologies and supporting Microsoft Defender security solutions. The engineer will design, configure, test, troubleshoot, and maintain application control policies using technologies such as Microsoft WDAC/App Control for Business, AppLocker, ThreatLocker, and Airlock Digital. Responsibilities also include investigating blocked applications, analyzing endpoint telemetry and Windows event logs, managing Microsoft Defender for Endpoint and Antivirus, and resolving endpoint security and compliance issues. The position requires hands-on experience with endpoint security tools, policy management through Intune and MECM/SCCM, KQL-based investigations, and scripting or automation. The engineer will also support phased deployments, proof-of-concept initiatives, documentation, troubleshooting procedures, and collaboration with application owners, infrastructure teams, and cybersecurity stakeholders.

Seeking an experienced cybersecurity engineer to support enterprise Application Whitelisting/Application Control and daily endpoint security operations. The resource should have strong hands-on experience with Microsoft WDAC/App Control for Business, AppLocker, or other enterprise application whitelisting/application control technologies. Experience with ThreatLocker and/or Airlock Digital is highly desirable given upcoming proof-of-concept efforts.

Key responsibilities and qualifications include:

Design, implement, tune, and troubleshoot application whitelisting/application control policies across enterprise environments.
Experience with WDAC/App Control for Business, AppLocker, ThreatLocker, Airlock Digital, or comparable application control platforms.
Troubleshoot application execution blocks using endpoint telemetry, Windows event logs, application control events, and other diagnostic data.
Strong experience with Microsoft Defender for Endpoint and Defender Antivirus, including endpoint health, compliance monitoring, policy troubleshooting, AV/EDR exclusions, and remediation.
Experience supporting day-to-day Defender operations, including investigating security alerts, endpoint health issues, sensor/telemetry issues, malware detections, and protection-status discrepancies.
Experience troubleshooting Defender Antivirus and EDR behavior, including performance-related issues, policy conflicts, exclusions, scanning behavior, and endpoint onboarding or configuration issues.
Working knowledge of Defender security capabilities such as attack surface reduction, Controlled Folder Access, tamper protection, automated investigation/remediation, and endpoint detection and response.
Experience with KQL and Microsoft Defender Advanced Hunting for endpoint investigation, troubleshooting, compliance analysis, threat hunting, and validation.
Experience managing endpoint security policies through Microsoft Intune and MECM/SCCM, including deployment, targeting, testing, validation, and troubleshooting.
Working knowledge across Windows, macOS, and Linux, particularly Red Hat Enterprise Linux (RHEL) environments.
Knowledge of code signing, certificates, trusted publishers/signers, hashes, paths, and application trust models.
Experience with GitHub or similar source-control platforms for maintaining application control policies, scripts, documentation, versioning, and change history.
Experience with Ansible, PowerShell, and other scripting or automation technologies is highly desirable.
Experience supporting application control and endpoint security across workstations, servers, and VDI environments.
Strong understanding of cybersecurity fundamentals, including endpoint security, malware prevention, vulnerability management, least privilege, defense-in-depth, threat detection, and security control validation.
Ability to analyze security events and endpoint telemetry to distinguish malicious or suspicious activity from legitimate application and system behavior.
Ability to perform policy testing and validation, support phased deployments, document expected versus actual results, and assist with production rollout readiness and rollback planning.
Ability to develop and maintain runbooks, troubleshooting procedures, root-cause analysis documentation, operational checklists, change documentation, and audit evidence.
Strong communication and troubleshooting skills with the ability to work directly with application owners, platform engineering teams, infrastructure teams, and cybersecurity teams to investigate issues and develop practical remediation paths.

Ref: #851-Rockville-S1

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