Senior Cyber Security Engineer

Cybersecurity Jobs; Ashburn (VA); On-site; USD 105,000 - 115,000; Full time

Benefits offered by this job

Health care

Dental

Vision

Life insurance

401(k)

Education assistance

Paid time off

Job summary

Cybersecurity Jobs in Ashburn, VA seeks a Senior Cyber Security Engineer to support UGS and OT cybersecurity engineering, including lab validation, security readiness, and evidence documentation. The role requires RMF/ATO experience and hands-on Nessus and Splunk activities.

The ideal candidate has 5–7 years in security engineering, vulnerability management, or assessment, with strong communication and cross-team coordination skills. Onsite work in a CBP-focused environment is expected.

Qualifications

• Bachelor’s degree in Cybersecurity, Information Technology, Computer Science, Engineering, or a related field; equivalent experience may be considered.

Responsibilities

• Provide cybersecurity engineering and ISSE support for UGS and operational technology systems, emphasizing lab validation, security readiness, and documentation.
• Support CSD VAT/Nessus scan readiness by covering asset identification, scan scope, credential availability, scan limitations, vendor constraints, and device impact considerations.
• Support CSD SOC/Splunk readiness by identifying available telemetry, log sources, logging limitations, monitoring requirements, and security-relevant events.
• Assist with firmware and software update validation, including security update review, vendor release note review, checksum or hash validation, and security impact tracking.
• Document vulnerabilities, findings, limitations, remediation actions, compensating controls, and retest results to support lab validation and ATO-related evidence.
• Contribute security input to lab test plans, validation packages, acceptance recommendations, and Phase 2 handoff materials.
• Support configuration and change management by assessing whether proposed changes affect validated baselines, security posture, scanning requirements, monitoring, or field-alignment readiness.
• Coordinate with stakeholders to support secure integration and validation of UGS technologies.
• Maintain security-related documentation, including scan readiness checklists, security considerations, vulnerability tracking, and ATO evidence inputs.
• Provide security guidance to lab team members and support security audits, assessments, and evidence requests as needed.
• Support lab incident and security event handling by documenting security events, assessing validation impact, preserving evidence, and coordinating with appropriate stakeholders.

Skills

Analytical thinking

Communication

Cross-functional coordination

Technical writing

Problem solving

Education

Bachelor’s degree in Cybersecurity or related field

Tools

Tenable Nessus

Splunk

Job description

The Senior Cyber Security Engineer will assist with cybersecurity engineering and ISSE-focused activities for Unattended Ground Sensor (UGS) and operational technology systems. This onsite role in Ashburn, VA supports lab validation work and coordination for CBP cybersecurity, CSD, and field-alignment planning, including security readiness, vulnerability scanning, and ATO evidence documentation.

Key Responsibilities

• Provide cybersecurity engineering and ISSE support for UGS and operational technology systems, emphasizing lab validation, security readiness, and documentation.
• Support CSD VAT/Nessus scan readiness by covering asset identification, scan scope, credential availability, scan limitations, vendor constraints, and device impact considerations.
• Support CSD SOC/Splunk readiness by identifying available telemetry, log sources, logging limitations, monitoring requirements, and security-relevant events.
• Assist with firmware and software update validation, including security update review, vendor release note review, checksum or hash validation, and security impact tracking.
• Document vulnerabilities, findings, limitations, remediation actions, compensating controls, and retest results to support lab validation and ATO-related evidence.
• Contribute security input to lab test plans, validation packages, acceptance recommendations, and Phase 2 handoff materials.
• Support configuration and change management by assessing whether proposed changes affect validated baselines, security posture, scanning requirements, monitoring, or field-alignment readiness.
• Coordinate with stakeholders to support secure integration and validation of UGS technologies.
• Maintain security-related documentation, including scan readiness checklists, security considerations, vulnerability tracking, and ATO evidence inputs.
• Provide security guidance to lab team members and support security audits, assessments, and evidence requests as needed.
• Support lab incident and security event handling by documenting security events, assessing validation impact, preserving evidence, and coordinating with appropriate stakeholders.

Required Qualifications

• Bachelor’s degree in Cybersecurity, Information Technology, Computer Science, Engineering, or a related field; equivalent experience may be considered.
• Minimum of 5 to 7 years of experience in cybersecurity, security engineering, ISSE, vulnerability management, or security assessment roles.
• Experience supporting RMF, ATO, POA&M, security control evidence, vulnerability remediation, or continuous monitoring activities.
• Experience with vulnerability scanning tools such as Tenable Nessus or an equivalent tool.
• Familiarity with SIEM and logging platforms such as Splunk, including the ability to identify useful telemetry and log sources.
• Experience assessing or supporting network-connected devices, embedded systems, operational technology, IoT, cameras, sensors, or field technology environments.
• Understanding of security hardening, firmware and software update validation, configuration baselines, change control, and risk documentation.
• Ability to document technical findings, limitations, test results, and security recommendations clearly for technical and program stakeholders.
• Ability to coordinate across cybersecurity, engineering, network, test, vendor, and program teams.
• Strong analytical, troubleshooting, and communication skills.
• Experience with DHS/CBP environments, NIST, FISMA, RMF, or federal cybersecurity requirements preferred.

Technology & Tools

• Tenable Nessus
• Splunk

Location, Work Setting, and Clearance

• Location: Ashburn, VA (onsite)
• Clearance: Public Trust (successful completion of government background investigation)

Compensation

USD 105,000 - 115,000 per year

Certifications

• CompTIA Security+ or equivalent baseline cybersecurity certification required or strongly preferred.
• CISSP, CISM, CISA, CASP+, CySA+, or equivalent preferred.
• Tenable/Nessus, Splunk, vulnerability management, incident response, or continuous monitoring certifications are beneficial.
• Operational technology, IoT security, or industrial/field technology security training is a plus.

Benefits

• Competitive pay and benefits packages
• Health care
• Dental
• Vision
• Life insurance
• 401(k)
• Education assistance
• Paid time off including PTO, holidays, and any other paid leave required by law