Subject Matter Expert (SME) Cybersecurity Architect

Description:

Location: Hybrid - 2 days a week on-site - Suitland, MD

Summary:

We are seeking a Subject Matter Expert (SME) Cybersecurity Architect to join our team supporting a large-scale federal modernization program. This role owns security architecture across enterprise solutions, platforms, networks, identity, mobility/endpoints, data, and cloud, bridging cybersecurity policy and controls with implementable designs, evidence, and risk decisions throughout the system lifecycle.

This is a hands-on architecture role. You'll be expected to produce real security designs and see them through review, implementation, and operations, not just set policy from a distance.

This is a hybrid role - 2 days a week on-site - Suitland, MD

Key Responsibilities:

1.     Security Architecture & Design  

• Develop and assess security architectures, patterns, requirements, controls integration, trust boundaries, data flows, and identity and segmentation design.

• Design logging, resilience, and operational safeguards into solution architecture.
• Translate federal and agency security requirements into practical design decisions, implementation actions, and residual-risk statements.

2.     Reviews & Governance  

• Participate in architecture compliance, technical design, engineering, security, and phase-gate reviews.

• Evaluate proposed deviations and waivers, and provide risk-informed recommendations for approval.
• Maintain security architecture artifacts, review findings, decisions, and risks in approved repositories, with clear traceability.

3.     Cross-Domain Coordination  

• Coordinate with solution, data, cloud/platform, network, identity, endpoint/mobility, and operations stakeholders to embed security into design from the start.

• Identify design gaps, threats, vulnerabilities, technical debt, and noncompliance early in the lifecycle, and propose mitigation options.

4.     Risk & Compliance  

• Apply federal risk management framework and security control knowledge to real design decisions.

• Support authorization evidence, implementation readiness, and post-deployment validation as needed.
• Produce implementable security designs, review findings, mitigations, and risk decisions that engineers can act on.

5.     Communication & Advisory  

• Communicate security architecture decisions, tradeoffs, and residual risk clearly to engineers, architects, program managers, and Government stakeholders.

• Support incident and problem learning to feed back into architecture improvements.

Requirements: 

• 12 years of experience in cybersecurity, including significant time in security architecture or enterprise technical leadership.
• Working knowledge of federal risk management, security controls, authorization, continuous monitoring, zero trust, identity, network, endpoint, cloud, application, data, and logging considerations.
• Ability to interpret security requirements and produce implementable designs, review findings, mitigations, and risk decisions.
• Strong communication skills, with experience engaging engineers, architects, program managers, and Government decision-makers.
• U.S. citizenship required.

Nice to Have:

• Direct federal, government, or mission-critical system security architecture experience.
• CISSP, CCSP, CISM, SABSA, GIAC, cloud security, or comparable security credentials.
• Experience with NIST RMF/control families, zero trust, cloud security, identity, endpoint security, segmentation, logging/SIEM, and vulnerability management.
• Experience documenting security architecture views in Sparx/Prolaborate or comparable architecture/modeling tools.

Core Capabilities:

• Advanced and Managed IT Services
• Agile Software Development
• DevSecOps
• Cybersecurity
• Health IT
• C4ISR & SIGINT
• Data Center Engineering & Operations
• Engineering & Installation

ATD Technology, LLC is a certified minority woman owned business that creates opportunities to match qualified job seekers with our client programs while meeting all parties’ financial needs and technical goals. ATD is a full service provider with offerings in Contract, Permanent and Temp-to-Perm staffing solutions. We serve Fortune 1000, mid cap and small cap companies in the Commercial, Private, Public and Government sectors across North America.

ATD Technology, LLC is a certified minority woman owned business that creates opportunities to match qualified individuals with client programs while meeting all parties' financial and technical goals. ATD is a full service provider with offerings in Contract, Permanent and Temp-to-Perm staffing solutions. We serve Fortune 1000, mid cap and small cap companies in the Commercial, Public and Government sectors.