Security Engineer

Cybersecurity Jobs; Ashburn (VA); On-site; USD 91,000 - 113,000; Full time

Benefits offered by this job

Generous paid time off

Medical, dental, and vision

Tuition reimbursement

401k

Job summary

Telos Corporation is seeking a Security Engineer to design, implement, and continuously improve enterprise security technologies in an onsite Ashburn, VA role. You will work on monitoring, remediation, hardening, and incident troubleshooting, with hands-on use of SIEM, EDR, APIs, scripting, and automation to connect platforms and cloud services.

Minimum qualifications include 3+ years in security engineering, Windows and Linux experience, and DoD 8140 readiness with US citizenship.

Qualifications

• Three or more years of experience in security engineering or related fields.
• Hands-on experience with SIEM, EDR, vulnerability management, firewalls, and IAM tools.
• Experience supporting Windows and Linux in an enterprise environment.
• Knowledge of network protocols, authentication, certificates, logging, and hardening.
• Proficiency with PowerShell, Python, APIs, and automation to streamline tasks.
• Ability to document architectures and security configurations clearly.

Responsibilities

• Engineer, configure, maintain, integrate, and improve enterprise security technologies and platforms.
• Support full lifecycle of security technologies from evaluation through retirement.
• Build integrations between security platforms, enterprise systems, and cloud services using APIs and scripting.
• Onboard and maintain security-relevant data sources; troubleshoot logging and ingestion issues.
• Develop automation to reduce manual effort and accelerate response.
• Support vulnerability management by identifying risks and validating remediation.

Skills

SIEM

EDR

Vulnerability management

Firewalls

Identity security

Privileged access management

Data security

Threat intelligence

PowerShell

Python

Education

Bachelor's degree in cybersecurity / IT / CS

Tools

APIs

Scripting

Job description

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.

What you will do

• 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.

Minimum qualifications

• 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 PowerShell, 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 verbal communication skills, with the ability to work professionally with technical and non-technical stakeholders.
• Demonstrated organizational skills to prioritize multiple engineering tasks, operational responsibilities, and project requirements.
• Ability to work independently while collaborating effectively with Security Operations, Information Technology, application teams, program personnel, and other stakeholders.
• Demonstrated commitment to continuous improvement, knowledge sharing, documentation, automation, and professional development.
• Must meet or be able to meet applicable DoD 8140 Cyber Workforce qualification requirements when assigned to work requiring those qualifications.
• Must meet eligibility requirements to access sensitive information, requiring US citizenship.

Education

• Bachelor’s degree in cybersecurity, information technology, computer science, engineering, or a related field (or equivalent combination of education, professional training, and work experience).

Preferred skills

• Experience with cloud technologies, particularly Amazon Web Services.
• Industry certifications such as CompTIA Security+, CySA+, SecurityX, SSCP, CISSP, CCSP, AWS Certified Security - Specialty, or relevant vendor certifications.
• Ability to obtain a U.S. Government security clearance.

Technologies you may work with

• SIEM, EDR, vulnerability management, firewalls, identity security, privileged access management, data security, threat intelligence platforms
• Windows, Linux
• Amazon Web Services
• PowerShell, Python, APIs
• DoD 8140

Compensation and benefits

• Salary: USD 90,640 - 113,300 per year
• Generous paid time off
• Medical, dental, and vision
• Tuition reimbursement
• 401k