Cyber Security Engineer III

Job Title: Cyber Security Engineer Location: Springfield, VA Work Model: On site Position Type: 6 month contract to hire Clearance Requirement: Active TS/SCI with ability to obtain a polygraph System One IT is seeking a Cyber Security Engineer to support a mission critical cyber operations program in Springfield, VA. This role focuses on cyber incident response, investigation, containment, documentation, and coordination across Government and contractor teams. The Cyber Security Engineer will support the full lifecycle of security incidents, including triage, analysis, response actions, reporting, and recommendations to improve future defensive cyber operations. Responsibilities Coordinate and support cyber incident response activities across Government and contractor teams Perform analysis and documentation of response actions, including containment, remediation, and recovery activities Support containment efforts such as IP blocks, domain blocks, account disablement, and other approved defensive measures Analyze host, server, network, memory, and system artifact data to support incident investigations Develop and identify indicators of compromise and share findings with appropriate cybersecurity stakeholders Support malware analysis, signature development, and adversary attribution efforts Build incident timelines, briefings, reports, and other documentation for stakeholders Document all actions and analysis in approved ticketing and reporting systems with sufficient detail for reconstruction of events Coordinate with CSOC Tier 1 and Tier 2 teams to remediate discrepancies and recommend actions to prevent recurrence Support Government directed Cyber Incident Response Team activities as required Develop and coordinate courses of action with Government and contractor stakeholders Conduct quality control reviews of closed CSOC tickets to ensure accurate analysis, categorization, documentation, and notification Provide input for daily and weekly CSOC reporting, including significant activity reports, operations updates, and status reports Required Qualifications Active TS/SCI clearance Ability to obtain a polygraph Bachelor’s degree or 6+ years of cybersecurity experience Experience supporting cyber incident response, CIRT, CSOC, SOC, DFIR, threat hunting, or defensive cyber operations Experience performing incident triage, investigation, containment, remediation, and reporting Familiarity with host, server, network, memory, or system artifact analysis Experience developing or identifying indicators of compromise Experience documenting incident timelines, analysis, actions taken, and recommendations Understanding of DoD cyber operations, incident handling, and reporting processes DoD 8570 / 8140 IAT Level II certification Ability to meet CSSP Incident Responder requirements Preferred Qualifications Master’s degree IAT Level III certification Experience supporting NGA, DoD, Intelligence Community, or federal cybersecurity programs Experience with malware analysis or reverse engineeringExperience with digital forensics tools and processes Experience with JIMS, ICMS, or similar Government incident reporting systems Experience developing scripts, tools, or automation to collect and analyze cyber incident data Certifications such as CySA+, GCIH, GCIA, GCFA, GCFE, CEH, CISSP, or similar System One is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex (including pregnancy, childbirth, or related medical conditions), sexual orientation, gender identity, age, national origin, disability, family care or medical leave status, genetic information, veteran status, marital status, or any other characteristic protected by applicable federal, state, or local law. #J-18808-Ljbffr