Principal Cyber Security Architect
About The Position
Leidos is seeking a Cyber Security Architect to join the Air Traffic Business Area within the Homeland Sector, supporting the development of the Leidos Common Automation Platform (L-CAP). L-CAP is a mission-critical, future-ready automation platform built on a hybrid cloud data mesh architecture, enabling next-generation air traffic management capabilities. You will serve as a senior cybersecurity architect responsible for defining the security architecture across a large-scale hybrid cloud platform supporting national air traffic operations. We are building with an AI-first engineering mindset, embracing emerging AI capabilities and modern development practices to accelerate delivery, improve software quality, and continuously evolve how we design and build mission-critical systems. This position supports government programs and requires the ability to obtain and maintain a favorable Public Trust investigation.
Requirements
- Bachelor's degree with 12+ years of cybersecurity experience
- Demonstrated cybersecurity architecture experience for enterprise platforms
- Deep knowledge of FedRAMP authorization processes and requirements
- Expertise in NIST 800-53 security controls and Risk Management Framework (RMF)
- Experience leading ATO efforts for federal information systems
- Knowledge of zero trust architecture principles and implementation patterns
- Experience with safety-critical systems security requirements
- Cloud security expertise across AWS and/or Azure environments
- Understanding of distributed systems security challenges and solutions
- Ability to obtain and maintain a Public Trust clearance; US citizenship required; subject to government background investigation
- Experience securing distributed real-time services and microservice communication patterns
- Knowledge of software supply chain security practices (SLSA, SBOM, artifact signing, dependency scanning)
- Ability to obtain and maintain a Public Trust
- U.S. citizenship required
- Successful completion of background investigations as required by the government customer
Nice To Haves
- CISSP, CISM, or equivalent cybersecurity certifications
- FAA or aviation-sector cybersecurity experience
- Penetration testing and red team experience
- SIEM architecture and security operations design
- Mission assurance and continuity of operations experience
- DoD or federal civilian agency cybersecurity programs
- Experience securing real-time operational systems in aviation or air traffic control environments
Responsibilities
- Define and maintain the cybersecurity architecture for the L-CAP platform
- Develop and execute the FedRAMP compliance strategy across cloud environments
- Lead Authority to Operate (ATO) planning and execution activities
- Conduct threat modeling and vulnerability assessments across platform components
- Design and implement zero trust architecture principles across the enterprise
- Establish and govern the security controls framework aligned to NIST 800-53
- Integrate security practices into DevSecOps pipelines and CI/CD workflows
- Provide cybersecurity governance across four Agile Release Trains (ARTs)
- Define security requirements for platform services and application teams
- Perform risk assessments and recommend mitigations for emerging threats
- Define security architecture for distributed real-time ATC services including inter-service communication protection and API gateway security
- Establish software supply chain integrity controls including SBOM generation, artifact signing, and dependency vulnerability management
- Design security patterns for cloud-native service communications protecting mission-critical ATC data flows
- Champion an AI-first engineering culture by identifying and applying AI-assisted development capabilities, automation, and emerging software engineering practices that improve developer productivity, code quality, testing, and delivery.
Benefits
- You’ll work on systems where performance, precision, and reliability matter — every second. This is not experimental AI for prototypes. This is disciplined, responsible AI applied to mission-critical software that supports national infrastructure.
- If you’re excited by solving complex problems in regulated, real-world environments — and using AI as a force multiplier rather than a shortcut — we’d like to talk.
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What This Job Offers
Job Type
Full-time
Career Level
Senior
