Cyber Security Systems Engineer - TS/SCI w/ POLY

Stech Technology UK Limited; Chantilly (VA); On-site; USD 120,000 - 160,000; Full time

Job summary

Falls Technology is seeking a Cyber Security Systems Engineer at Manager or SME level to support security accreditation for multiple applications. The role focuses on system security, risk management, and compliance, working with technical teams and accreditation stakeholders to ensure robust security practices.

The ideal candidate will lead A&A activities, develop security documentation, and provide expert guidance on cloud security, encryption standards, and secure SDLC within a fast-paced,

Qualifications

• Bachelor's degree or equivalent work experience.
• Experience in security hardening for Windows and Linux.
• Understanding of risk mitigation frameworks and their application to enterprise security.
• Expertise in encryption standards and secure data practices.
• Familiarity with secure SDLC principles and practices.
• Strong collaboration and communication in fast-paced, compliance-driven environments.

Responsibilities

• Lead and facilitate the Assessment & Authorization (A&A) process for multiple applications.
• Develop system security plans, risk assessments, SOPs, and contingency plans.
• Collaborate with accreditation staff to ensure systems meet compliance and security standards.
• Perform system hardening on Windows and Linux environments, including patching, securing ports and protocols, and configuring security groups.
• Conduct Technical Exchange Meetings (TEMs) with technical and non-technical stakeholders.
• Define and enforce security assessment criteria for development teams.
• Provide expert-level guidance on cloud security best practices, particularly with AWS.
• Apply agile methodologies to security engineering processes.
• Use vulnerability scanning tools to identify, report, and mitigate system risks.
• Implement risk mitigation frameworks in line with organizational policies.
• Ensure systems meet encryption and secure communication standards.
• Support secure implementation across the full SDLC.

Skills

Security hardening

Risk management

Compliance

Cloud security (AWS)

A&A process

Collaboration & communication

Education

Bachelor's degree in Computer Science or related field

Tools

Vulnerability scanning tools

AWS Console

Job description

Falls Technology is a forward-thinking company dedicated to delivering innovative, high-impact solutions to our clients across government and industry. We pride ourselves on a culture of collaboration, integrity, and excellence—where talented professionals are empowered to do their best work. As a trusted partner in digital transformation, we blend deep technical expertise with a commitment to user-centered design, helping organizations modernize systems, streamline operations, and achieve meaningful outcomes. At Falls Technology, you’ll be part of a team that values curiosity, initiative, and making a difference through technology. We also offer an outstanding benefits package that includes comprehensive health coverage, generous paid time off, flexible work arrangements, and professional development opportunities—because we believe great work comes from people who feel supported and valued.

We are currently seeking a highly experienced Cyber Security Systems Engineer—at the Manager or Subject Matter Expert (SME) level—to support the security accreditation and assessment of multiple applications. The ideal candidate will bring deep technical knowledge of system security, risk management, and compliance, and a proactive approach to working with both technical teams and accreditation stakeholders.

Key Responsibilities:

• Lead and facilitate the Assessment & Authorization (A&A) process for multiple applications
• Use customer-specific tools to manage accreditations and generate security documentation
• Develop system security plans, risk assessments, SOPs, and contingency plans
• Collaborate with accreditation staff to ensure systems meet compliance and security standards
• Perform system hardening on Windows and Linux environments, including patching, securing ports and protocols, and configuring security groups
• Conduct technical briefings and Technical Exchange Meetings (TEMs) with both technical and non-technical stakeholders
• Define and enforce security assessment criteria for development teams
• Provide expert-level guidance on cloud security best practices, particularly with Amazon Web Services (AWS)
• Apply agile methodologies to security engineering processes
• Use vulnerability scanning tools to identify, report, and mitigate system risks
• Implement risk mitigation frameworks in line with organizational policies
• Ensure systems meet encryption and secure communication standards
• Support secure implementation across the full Software Development Life Cycle (SDLC)

Mandatory Qualifications:

• Bachelor’s degree in Computer Science, Information Systems, or related field (or equivalent work experience)
• Proven experience in security hardening for both Windows and Linux systems
• Deep understanding of risk mitigation frameworks and their application to enterprise security
• Expertise in encryption standards and secure data practices
• Familiarity with secure SDLC principles and practices
• Strong collaboration and communication skills in fast-paced, compliance-driven environments

If you're passionate about cybersecurity and ready to take on a leadership role within a mission-driven organization, we invite you to join Falls Technology and help shape the future of secure digital systems.