Senior Security Architect with Security Clearance

Company: Argus Cyber
Location: Washington, DC (Hybrid – 3 Days On-Site per Week)
Experience: 7+ Years
Education: Bachelor's Degree
Position Type: Full-Time
Citizenship & Security Requirement: U.S. Citizenship and Ability to Obtain a Public Trust Determination Position Overview
Argus Cyber is seeking an experienced Senior Security Architect to support the design, assessment, and implementation of secure enterprise architectures for federal government environments.

The ideal candidate will bring strong technical expertise in security architecture reviews, Zero Trust principles, cloud security, and federal cybersecurity frameworks. This position will serve as a senior technical subject matter expert (SME), responsible for evaluating existing and proposed system architectures, identifying security risks and design weaknesses, and recommending practical engineering solutions to strengthen enterprise security.

The Senior Security Architect will collaborate with engineering teams, system owners, and government stakeholders to ensure technology solutions are secure, scalable, and aligned with federal cybersecurity requirements and industry best practices. This is a hybrid position requiring on-site support in Washington, DC, three days per week. Candidates must be U.S. citizens with the ability to obtain a Public Trust determination.

Key Responsibilities • Conduct comprehensive technical security architecture reviews of existing and proposed systems, applications, networks, and cloud environments to identify architectural weaknesses, security risks, and control gaps. • Evaluate system designs, network segmentation, data flows, trust boundaries, authentication mechanisms, and security control integration to identify vulnerabilities and recommend actionable engineering solutions. • Design, develop, and maintain secure enterprise architectures, security reference architectures, and technical design standards supporting federal IT environments. • Provide technical expertise and architectural guidance for Zero Trust Architecture (ZTA), cloud security, hybrid infrastructure, and enterprise modernization initiatives. • Assess architectural designs and proposed solutions against NIST SP 800-160, NIST SP 800-53, NIST SP 800-207, FISMA, and applicable federal cybersecurity requirements. • Develop security architecture review reports, technical findings, risk assessments, and remediation recommendations to address identified architectural deficiencies. • Collaborate with cybersecurity engineers, system owners, and government stakeholders to integrate security controls, resolve architectural risks, and support secure system design throughout the system development lifecycle. • Serve as a senior technical advisor on cybersecurity architecture, emerging technologies, security engineering practices, and enterprise security improvements.

Required Qualifications • Bachelor's degree in Cybersecurity, Computer Science, Information Technology, Engineering, or a related technical discipline. • 7+ years of professional experience designing, implementing, assessing, or supporting secure enterprise systems and network architectures. • Demonstrated hands-on experience conducting technical security architecture reviews, including evaluating system designs, network segmentation, data flows, trust boundaries, authentication mechanisms, and security control integration to identify architectural weaknesses and recommend actionable engineering solutions. • Experience designing or evaluating enterprise security architectures in complex IT environments, including on-premises, cloud, and hybrid infrastructures. • Strong knowledge of Zero Trust Architecture principles, security engineering methodologies, and enterprise cybersecurity architecture practices. • Experience with cloud security architecture and cloud migration initiatives involving AWS, Microsoft Azure, or comparable enterprise cloud environments. • Working knowledge of federal cybersecurity frameworks and requirements, including NIST SP 800-160, NIST SP 800-53, NIST SP 800-207, and FISMA. • Strong understanding of network security, identity and access management, encryption, segmentation, and enterprise security control integration. • Ability to translate technical security findings into clear, actionable recommendations and communicate effectively with engineering teams, system owners, and government stakeholders. • Must be a U.S. citizen with the ability to obtain a Public Trust determination. • Must be able to work on-site in Washington, DC, three days per week.

Preferred Qualifications • One or more of the following certifications (any one is preferred): CISSP OR CISSP-ISSAP OR CISSP-ISSEP OR AWS Certified Solutions Architect OR Microsoft Certified: Azure Solutions Architect Expert. • Experience supporting cybersecurity architecture, security engineering, or technical design reviews within federal civilian, Department of Defense (DoD), or Intelligence Community (IC) environments. • Experience developing enterprise security reference architectures, technical design standards, or security architecture governance processes. • Experience supporting federal Zero Trust initiatives, cloud modernization, or enterprise security transformation programs. • Familiarity with NIST Risk Management Framework (RMF), FedRAMP, Authorization to Operate (ATO) processes, and federal security compliance requirements. • Experience with enterprise security technologies such as Splunk, Microsoft Sentinel, identity and access management solutions, endpoint security platforms, or network security technologies.

About Argus Cyber
Argus Cyber specializes in cybersecurity operations, engineering, architecture, and compliance solutions for federal civilian, Department of Defense, Intelligence Community, and commercial customers. Argus Cyber combines the agility and innovation of a small business with the operational maturity and technical expertise required to support complex, mission-critical cybersecurity programs. Argus Cyber is an

Equal Opportunity Employer.