Mission-Critical Systems Architect – Agile, IC/DoD (TS/SCI)

Leidos Inc; Chantilly (VA); On-site; USD 108,000 - 195,000; Full time

Job summary

Leidos is seeking a Sr. Systems Architect to design and mature enterprise IT architectures on the Chinook program. You will collaborate with software, systems, product owners, testers, and mission stakeholders to produce viable design artifacts that support national security objectives.

You will work in an agile environment, ensure traceability between requirements and designs, and mentor teams across data, security, and system domains. This role emphasizes communication and technical rigor.

Qualifications

• Bachelor's degree in Computer Science, Computer Engineering, Systems Engineering or related technical discipline; 8–12 years of relevant experience.

Responsibilities

• Analyze and mature existing IT architecture baselines into comprehensive, accurate, and scalable design models.
• Develop, maintain, and govern detailed IT architecture documentation across system, data, and security domains.
• Establish and maintain strict traceability between architectural artifacts, mission requirements, and deployed solutions.
• Utilize industry-standard architecture development tools to generate and manage structural blueprints and diagrams.
• Integrate architectural planning, review, and execution
• Collaborate with cross-functional contract teams to ensure the architecture aligns with overarching mission objectives.
• Identify design gaps, technical debt, or security risks in current systems and architect viable mitigation strategies.
• Lead technical reviews and present complex architectural concepts to both technical and non-technical stakeholders.
• Ensure all IT designs adhere to Enterprise Architecture standards and Intelligence Community (IC) directives.
• Provide technical mentorship and architectural guidance to downstream development and engineering teams.
• Drive continuous improvement in documentation standards and architecture modeling practices across the contract.

Skills

Enterprise architecture

Traceability matrices

Architectural modeling

DoDAF/TOGAF

Education

Bachelor's degree in Computer Science/Engineering or related

Master's degree (preferred)

Tools

Sparx EA

Cameo

MagicDraw

Job description

Leidos is seeking a Sr. Systems Architect to design and mature enterprise IT architectures on the Chinook program. You will collaborate with software, systems, product owners, testers, and mission stakeholders to produce viable design artifacts that support national security objectives.

You will work in an agile environment, ensure traceability between requirements and designs, and mentor teams across data, security, and system domains. This role emphasizes communication and technical rigor.