Security Engineer

Telos Corporation is seeking a Security Engineer to design, implement, integrate, maintain, and continuously improve enterprise security technologies and technical controls. This onsite role in Ashburn, VA supports core security platform engineering work across monitoring, remediation, hardening, and incident troubleshooting.

• Engineer, configure, maintain, integrate, and improve enterprise security technologies, including SIEM
  , EDR
  , vulnerability management, network security, identity and privileged access management, data security, threat intelligence, and security monitoring platforms.
• Support the full lifecycle of security technologies, from evaluation and design through implementation, configuration, integration, upgrades, health monitoring, troubleshooting, and retirement.
• Build and maintain integrations between security platforms, enterprise systems, cloud services, and operational workflows using APIs
  , scripting
  , and other automation methods.
• Onboard and maintain security-relevant data sources, validating data quality and coverage while troubleshooting logging, parsing, collection, and ingestion issues.
• Develop automation to reduce manual effort, improve consistency, accelerate response, and deliver measurable operational benefits.
• Support enterprise vulnerability management by identifying technical risks, helping system owners remediate issues, validating corrective actions, and recommending compensating controls when remediation cannot be completed quickly.
• Create and implement secure configuration standards, technical security baselines, reference architectures, and reusable engineering patterns.
• Participate in security architecture and technical design reviews for enterprise systems, applications, cloud services, and infrastructure changes.
• Evaluate proposed technologies and system changes to confirm security requirements, integration dependencies, technical risks, and operational support needs.
• Provide advanced technical escalation and troubleshooting support to the Security Operations Center
  , IT, application teams, and program personnel.
• Support cybersecurity investigations by collecting and analyzing relevant endpoint, network, identity, application, cloud, and security-platform data.
• Identify gaps in security visibility, platform coverage, system configuration, and control effectiveness, then develop practical corrective actions.
• Plan, test, document, and implement security-related changes in line with change-management requirements, including validation and rollback procedures.
• Monitor operational health, capacity, licensing, support status, and effectiveness of assigned security platforms.
• Maintain accurate technical documentation, including architecture diagrams, configuration records, integration specifications, runbooks, operating procedures, and troubleshooting guides.
• Cross-train team members and produce documentation that reduces reliance on individual personnel for critical security technologies and processes.
• Coordinate with vendors and service providers to resolve technical issues, evaluate product capabilities, and plan upgrades or improvements.
• Assist with information security and enterprise technology projects and perform other duties as assigned.

• Three or more years of experience in security engineering, systems administration, network engineering, cloud engineering, security operations, or a closely related technical field.
• Hands-on experience implementing, administering, integrating, or supporting enterprise security technologies such as SIEM
  , EDR
  , vulnerability management, firewalls, identity security, privileged access management, data security, or threat intelligence platforms.
• Experience supporting Windows and Linux operating systems in an enterprise environment.
• Understanding of network architecture, common network protocols, authentication, directory services, certificates, encryption, logging, and system-hardening concepts.
• Experience using Power Shell
  , Python
  , APIs
  , or similar technologies to automate technical and operational processes.
• Ability to analyze complex technical issues, identify root causes, develop corrective actions, and communicate risks clearly.
• Understanding of vulnerability management, secure configuration, change management, incident response, and the security technology lifecycle.
• Ability to create clear technical documentation, architecture diagrams, implementation plans, operating procedures, and troubleshooting guides.
• Effective written and…