Senior DevSecOps Engineer — Secure Cloud & CI/CD Lead

Cornerstone Defense LLC; Reston (VA); On-site; USD 150,000 - 190,000; Full time

Job summary

Cornerstone Defense LLC is seeking a Sr. DevOps Engineer III to design, implement, and sustain secure DevSecOps pipelines across multiple environments. The role emphasizes integrating security into the SDLC, automating deployments, and guiding teams on best practices.

Responsibilities include building pipelines in GitLab CI/Jenkins with STIG validation, creating IaC templates via CloudFormation for AWS GovCloud, and mentoring junior engineers while maintaining thorough technical documentation.

Qualifications

• Active TS/SCI Clearance with CI poly.
• Minimum IAT Level 2 Certification (CompTIA Security+, GSEC, SSCP, etc)
• 10+ years of experience in DevSecOps or similar role with infra automation focus
• Expert experience with DevOps practices, CI/CD pipelines, containerization, and automation tools
• Expert delivery of DevSecOps services across multiple classified domains
• Strong experience with AWS and secure cloud infrastructure design
• Proficiency with IaC tools such as Terraform, CloudFormation, or Ansible
• Strong scripting skills (Python, Bash) in a Linux environment

Responsibilities

• Design and implement automated solutions across multiple classification environments.
• Develop CI/CD pipelines from scratch in GitLab CI and Jenkins with security scanning and STIG validation.
• Create and maintain IaC templates using CloudFormation to architect secure DevSecOps infra across AWS GovCloud, C2S, TC2S.
• Lead advanced troubleshooting using logs and root-cause analysis to mitigate service degradation.
• Provide expert security guidance on secure coding, STIG compliance, and remediation.
• Mentor junior engineers through code reviews and knowledge sharing.

Skills

DevSecOps

CI/CD pipelines

Security practices

Mentoring

Linux CLI

Tools

Jenkins

GitLab CI/CD

Artifactory

SonarQube

Prisma Cloud

Terraform

CloudFormation

Ansible

Job description

Cornerstone Defense LLC is seeking a Sr. DevOps Engineer III to design, implement, and sustain secure DevSecOps pipelines across multiple environments. The role emphasizes integrating security into the SDLC, automating deployments, and guiding teams on best practices.

Responsibilities include building pipelines in GitLab CI/Jenkins with STIG validation, creating IaC templates via CloudFormation for AWS GovCloud, and mentoring junior engineers while maintaining thorough technical documentation.