Senior Cloud Security Engineer | TS/SCI Clearance

M9 Solutions LLC.; Washington (District of Columbia); On-site; USD 125,000 - 140,000; Full time

Job summary

M9 Solutions is seeking a Security Engineer to work on-site in Washington, DC, supporting a government contract. An active TS/SCI clearance is required. The role emphasizes secure cloud architectures, incident response, and cross-functional leadership.

The responsibilities include developing enterprise-wide security policies, guiding secure coding practices, and ensuring compliance with NIST and CNSSI standards. Salary is $125,000–$140,000 USD, with full-time on-site employment.

Qualifications

• TS/SCI security clearance.
• 8+ years of cybersecurity experience, with 3+ years in a cloud security role.
• Deep knowledge of cloud security across cloud environments.
• Expertise in security architecture, network defense, data protection, and threat modeling.
• Demonstrated experience in incident response, log correlation, and risk assessments.
• Strong communication and leadership skills; capable of briefing executives and managing cross-functional security efforts.

Responsibilities

• Leads development of enterprise-wide cloud security policies and incident response plans.
• Designs, implements, and improves secure cloud-based architectures and monitoring systems.
• Analyzes security data to detect, remediate, and prevent threats.
• Guides platform and app teams on secure coding and architecture best practices.
• Coordinates vulnerability management activities and provides actionable recommendations.
• Represents the organization in coordination with industry and government security partners.
• Oversees COMSEC operations and crypto key management systems (CKMS).
• Ensures compliance with federal and industry standards (NIST, CNSSI 4009).
• Mentors junior engineers and leads security projects from concept to deployment.

Skills

Security clearance

Cloud security

Cybersecurity leadership

Incident response

Job description

M9 Solutions is seeking a Security Engineer to work on-site in Washington, DC, supporting a government contract. An active TS/SCI clearance is required. The role emphasizes secure cloud architectures, incident response, and cross-functional leadership.

The responsibilities include developing enterprise-wide security policies, guiding secure coding practices, and ensuring compliance with NIST and CNSSI standards. Salary is $125,000–$140,000 USD, with full-time on-site employment.