Jobs at Sentar Inc.

Serve as a penetration testing subject matter expert for Risk Management Framework security control assessments. Perform or direct network- and application-level testing using established protocols and methods, applying expertise in network protocols, operating systems, architectures, equipment, services, and security standards.

Provides cybersecurity tool support across the Defense Health Agency enterprise network. Analyzes vulnerability scans, endpoint security, configuration-management, compliance, and authorization data; identifies coverage and documentation gaps; coordinates with system points of contact; supports compliance with NIST, DoD, DHA, STIG, and SRG requirements; assists with system artifacts, training, troubleshooting, and SOP maintenance.

Monitors and triages cybersecurity alerts, validates and documents incidents, performs endpoint and network intrusion detection, reviews logs using Splunk, gathers basic forensic artifacts, and escalates complex investigations to Tier 2 personnel. Maintains SOP and compliance documentation, supports incident response operations, recommends tuning to reduce false positives, and contributes to operational reporting. The role provides 24/7 support across rotating shifts and may require up to 10% travel.

Develops and tunes cybersecurity detection use cases based on current threats, MITRE ATT&CK, and government guidance. Reviews SIEM/SOAR alerts, reduces false positives, identifies logging and detection gaps, supports log ingestion and data normalization, and creates correlation rules, signatures, filters, and automations for defensive cyberspace operations.

Support satellite and ground-system operations, management, and maintenance for reliable satellite communications. Analyze real-time and archived telemetry to assess satellite subsystem health, identify performance trends, resolve anomalies, recommend corrective actions, and mitigate operational risks. Brief support crews, verify command transmissions, monitor telemetry, execute contingency actions, and produce quarterly satellite health reports. The role requires on-console and off-console satellite engineering expertise and supports Fleet, Joint, and interagency operations.

Analyze cyber threats, adversaries, campaigns, vulnerabilities, and intelligence sources; correlate external reporting with security telemetry; produce intelligence assessments, actor profiles, alerts, and briefings; map behaviors to MITRE ATT&CK; support threat hunting, detection engineering, incident response, and intelligence sharing; maintain intelligence records, collection plans, provenance, confidence, and handling requirements.

Manages and develops F5 ASM web application firewall policies supporting DoD cybersecurity initiatives. Handles firewall acceptance, block and unblock requests, policy tuning, application onboarding, access management, incident response surges, and threat hunting. Coordinates with cloud architects, site engineers, gateway teams, and application stakeholders to reduce false positives and align protections with emerging threats and adversary tactics.

Supports Defensive Cyberspace Operations for Defense Health Agency systems by triaging cybersecurity Requests for Information, conducting threat research and analysis, and producing actionable intelligence reports. Collaborates with cyber analysts, incident responders, intelligence teams, NIWC Atlantic, and DHA stakeholders. Maintains awareness of threats and vulnerabilities, advises subscribers on mitigation, tracks RFI metrics, and improves operational workflows in a high-tempo environment.

Provides recognized technical or programmatic expertise supporting the U.S. Air Force GBSD/Sentinel program. Responsibilities may span systems engineering, software engineering, information assurance, DevSecOps, requirements management, enterprise architecture, and technical program support. The role requires extensive technical experience, DoD experience, expertise with DOORS, CAMEO, SysML/UML, and an active Secret clearance with SAP/SCI eligibility.

Provides independent office administration support, applying functional and industry knowledge to develop solutions for moderately complex administrative problems. The role requires a high school diploma or GED, at least 10 years of office administration experience, proficiency with Microsoft Office and Outlook, and an active TS/SCI clearance with polygraph.

Manages and maintains cloud and on-premises networking environments, including AWS VPC, Azure VNet, routers, switches, firewalls, load balancers, and VPNs. Monitors performance, implements security controls, performs upgrades and capacity planning, maintains network documentation, and troubleshoots connectivity issues. Collaborates with IT teams on network projects and supports high availability, scalability, and reliability. Requires rotational after-hours on-call support and a Secret clearance.

Provide technical engineering support for a complex federal network infrastructure spanning multiple classification-level enclaves. Design, develop, and implement network solutions for an enterprise environment, support the IT lifecycle, and resolve escalated networking issues beyond first- through third-tier support.

Support GBSD/Sentinel systems engineering: analyze user requirements and architectures, develop system requirements and design, produce technical and architecture documentation, integrate new designs into operations, and ensure technical integrity of systems engineering deliverables.

Support and manage information assurance for systems/enclaves: implement and enforce security policies, perform RMF-based authorization activities, conduct vulnerability/risk assessments, manage configuration and changes, prepare SSP/C&A/SRTM documentation, evaluate security solutions for classified processing, and provide day-to-day security operations and oversight.

Lead Information Systems Security Engineer responsible for designing, building, and sustaining DSCA's security automation architecture in AWS. Translate RMF/NIST/DISA STIG regulatory requirements into Policy-as-Code and automated operational code. Serve as lead technical authority for enterprise-level cloud security engineering, configuration management, compliance validation, and orchestration.

Perform data extraction (including VPN data), integrate into databases, and analyze datasets using statistical and computational methods. Apply knowledge of DX, XKS, and CASNs to guide data selection, build analytic models, and produce actionable insights. Translate mission needs into technical requirements and communicate results to non-technical stakeholders while accounting for government data constraints.

Lead end-to-end capture and business development for DoD/IC cybersecurity, intelligence, software, and mission systems opportunities. Own opportunity identification, customer engagement, capture strategy, proposal writing, pricing coordination, teaming, gate reviews, bid/no-bid decisions, and closing deals in a lean, hands-on environment.

Lead and oversee contractor and subcontractor activities to satisfy PWS requirements. Serve as primary decision-maker for contractor, manage communications with Government, monitor performance and finances, track requirements and metrics, and ensure quality and efficiency of program execution.

Serve as primary contractor point of contact and overall manager for XT-CS-CIO efforts. Lead cybersecurity strategy, implement frameworks (NIST/ISO/CMMC), oversee risk assessments, audits, vendor management, cross-team coordination, crisis response, and ensure contractor performance and financial/business support per the PWS.

Serve as contractor technical task lead for DCISE, ensuring quality and efficiency of contractor performance. Lead and supervise teams performing all-source cyber intelligence analysis, malware and network analysis, use scanning tools (e.g., VirusTotal), perform OSINT and closed-source collection, link and data fusion, indicator pivoting, and threat actor analysis. Assist government with financial and business processes for the task.