Test Engineer III

Overview

Job Title:
Cybersecurity Test Engineer III

Job Location:
Ft Meade, MD

Position Type:
Full-time

Clearance Level: Secret

Foxhole Technology provides robust cybersecurity and IT support capabilities for federal civilian and defense agencies. A recognized leader in navigating technology and security challenges, Foxhole delivers mission-focused innovations to answer evolving and complex needs. Our talented employee-owners provide agile, scalable services and solutions that solve operational gaps, operate critical systems, and protect and secure the enterprise – across the organization and around the world.

The Cybersecurity Test Engineer III will support sensing development initiatives, including modernization and integration of the Open Sensor Platform (OSP), Full Packet Capture (FPCAP), Automated Security Validation (ASV), Intrusion Detection System (IDS), and emerging sensing technologies. This role will perform hands‑on integration testing, regression testing, performance evaluations, data validation, and verification/validation (V&V) activities across lab, cloud, and operationally representative environments.

• Ability to develop test plans, procedures, automated test scripts, and detailed test reports that validate system functionality, interoperability, security requirements, and mission readiness.
• Must be able to work closely with system engineers, developers, cybersecurity engineers, and DISA stakeholders to support successful delivery of new sensing capabilities used to protect and defend the DoDIN.
• Knowledge of Test Planning & Execution to include:
  • Support development of test plans, test procedures, and detailed test documentation for sensing capabilities under development.
  • Contribute to Integration & Test Readiness Reviews (ITRR), System Requirements Reviews (SRR/SFR), and Design Reviews (PDR/CDR).
  • Develop and maintain automated regression test suites aligned with Dev Sec Ops  pipelines.
  • Prepare test data, test scripts, and environment configurations required for testing events.
  • Document test results including issues, severity, impact, and recommended corrective actions.
• Experience in Integration, Performance & Regression Testing to include e executing integration and interoperability test events across multiple sensing platforms including OSP, FPCAP, ASV, and IDS.
• Validate sensor performance including throughput, response time, data integrity, and system stability.
• Conduct regression testing to ensure new code, patches, or configuration changes do not impact existing functionality.
• Validate data flows, metadata generation (e.g., Zeek logs), and data brokering integration with SIEM tools.
• Support performance testing by collecting system data under load, stress, or high-throughput scenarios.
• Conduct Verification & Validation testing to confirm compliance with system, functional, security, and operational requirements.
• Support Government IV&V, JITC coordination, and Operational Test (OT) activities as required.
• Assist with documenting discrepancies, defects, risk areas, and mitigation steps.
• Lab, Cloud & Field-Testing Support:
  • Conduct testing in sensing lab environments, virtual/cloud environments, and operationally representative platforms.
  • Support installation, configuration, and testing of hardware, VMs, sensing software, data brokers, and network components.
  • Collaborate with engineers to troubleshoot, replicate, and resolve issues discovered during testing.
  • Provide test support during deployment pilots, sustainment updates, and field validation testing.
• Collaboration & Reporting:
  • Work closely with systems engineers, software developers, cybersecurity personnel, and PMO staff to ensure accurate test coverage.
  • Provide real‑time issue tracking, severity assessments, and status reporting to Government stakeholders.
  • Support preparation of test briefs, test-readiness presentations, and Lessons Learned documentation.

• Active DoD Secret clearance required.
• Three (3)+ years of experience in software, systems, or cybersecurity testing.
• Experience testing cybersecurity tools, network sensors, or enterprise monitoring platforms.
• Understanding of networking fundamentals (TCP/IP,…