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# Senior Security Architect

- **Company:** Leidos, Inc.
- **Location:** Gaithersburg, MD, United States
- **Experience:** Expert
- **Salary:** $131,300.0 - $237,350.0
- **Contract:** Permanent contract
- **Skills:** Kubernetes Security, Amazon Web Services, Systems Engineering, User Authentication, Software as a Service, Cloud Computing, Cyber Security, Computer Networks, System Configuration, Identity and Access Management, Key Management, Network Security, Machine Learning, Open Source Intelligence, Public Key Infrastructure, Systems Development Life Cycle, Security Content Automation Protocol, Security Information and Event Management, Data Streaming, Software Vulnerability Management, Kubernetes, Information Technology, Data Analytics, Tools for Reporting, Prisma Cloud Platform, Splunk
- **Published:** October 27, 2026
- **Apply:** https://www.thejobnetwork.com/job/c6dc067b-506e-432e-8b83-8999656118e8/senior-security-architect

## About the Role

* Bachelor of Science degree from an accredited university ideally in Computer Science, Information Assurance, Information Security System Engineering or related field with a minimum of 12 years of experience as an Information Systems Security Engineer (ISSE) or System Engineer on programs and/or contracts with the customer space.
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 * Certification: At least one IAT and one IAT Level II or higher certification e.g., CCNA Security, CySA+, Security+ CE, CISSP (or Associate) and the ability to obtain Privileged User Account (PUA)/elevated access per DoD policy.
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 * Must have a solid understanding of security practices and policies and hands-on vulnerability testing experience using Customer tools.
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 * Must have experience applying Risk Management Framework.
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 * Must have demonstrated knowledge of and experience with common security tools, such as ACAS, Prisma Cloud, and Splunk/Elastic.
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 * Experience with SCAP or STIG based tools and specifications.
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 * Extensive experience designing enterprise security solutions and translating security requirements into implementable technical architectures.
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 * Knowledge of Kubernetes and container security architectures, including image security, admission controls, secrets, identity, network policies, software supply chain security, and runtime protection.
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 * Experience designing solutions involving SIEM, vulnerability management, identity security, network security, secrets management, container scanning, and data protection technologies., * Experience with data modeling and mapping system data flows for the purpose of cybersecurity analysis., * Experience with Commercial Cloud Services (C2S) and cloud-based enterprise services, preferably AWS
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 * Five (5) years of experience with Defense in Depth Principals/technology (including access control, authorization, identification and authentication, public key infrastructure, network and enterprise security architecture) and applying risk assessment methodology to system development.
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 * DoD 8570 compliance with IASAE Level 2 or 3.
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 * Experience installing, configuring, testing, deploying, operating, and maintaining enterprise network based scanning and reporting tools such as Trellix/ESS, ACAS, Evaluate STIG, SteelCloud ConfigOS, Prisma Cloud and STIG Manager.

## Description

Leidos has an exciting opening for you, our next Cloud Cyber Security Engineer, to play a critical role in the accreditation of a state-of-the-art technology stack under the DOMEX Technology Platform (DTP) where we support our client's mission to centralize and standardize Tasking, Collection, Processing, Exploitation and Dissemination (TCPED) of Open Source Intelligence (OSINT) across the Defense and Intelligence Community enterprises. We leverage cloud-based computing, artificial intelligence (Al), machine learning (ML), and cross-domain transfer systems to provide cutting edge data exploitation, enrichment, triage, and analytics capabilities to the Defense Intelligence Enterprise., As a Cloud Cyber Security Engineer, you will be responsible for providing technical security expertise in securing, hardening, and maintaining compliance of cloud-based software platforms and infrastructure across multiple secure networks. You will lean on your experience with security technologies, industry best practices, vulnerability management, and risk management frameworks (RMF) to employ effective security solutions. In this role, you will collaborate closely with compliance personnel, software engineers, system engineers, system architects, and Government counterparts to perform the full spectrum of systems and cyber security engineering tasks to ensure system regulatory compliance and security posture., * Monitor system security status, identify risks and vulnerabilities, and coordinate remediation efforts with system owners, engineers, and other stakeholders.