Senior Security Systems Engineer

The Opportunity

This position is with our Systems Integration Group. You will spend part of your time developing debugging and maintaining software applications while owning the full ecosystem those applications run on. This includes installation and configuration of RHEL 8 operating systems performing cybersecurity scans and hardening (including SELinux policy work) building and maintaining utility scripts and automated build processes and supporting the Identity Management (IdM/FreeIPA) and PKI infrastructure that underpins the environment.

You will apply strong Python and shell scripting skills to automate system builds configuration management (Ansible) and operational tasks. You will also use your networking virtualization (ESXi and KVM) and hardware knowledge to diagnose and resolve system issues. The role includes direct interaction with the customer to capture defect reports and enhancement requests and turn them into a prioritized backlog for future releases.

Responsibilities

• Refine and enhance existing applications to meet customer and operational requirements
• Design develop and maintain automation for rapid repeatable system builds and configuration (Ansible Python shell)
• Develop and maintain user and administrative documentation to satisfy contract requirements
• Periodically travel onsite to integrate operational systems apply updates and support deployments
• Profile analyze and optimize legacy software and the supporting system stack
• Configure harden and maintain RHEL 8 systems including SELinux policies
• Support and extend IdM/FreeIPA and PKI infrastructure
• Contribute to virtualization environments (ESXi and KVM) and associated networking

Qualifications

Required

• Bachelors degree (or higher) in Computer Science Computer Engineering or a related technical field or equivalent relevant experience
• U.S. Citizen with a minimum of a Secret security clearance with the ability to obtain a TS/SCI clearance.
• 7 years of systems engineering or related experience
• Strong understanding of Unix/Linux systems with solid experience on RHEL 8
• Strong Python scripting and programming skills
• Proficient with Bash/shell scripting
• Strong experience with IdM or FreeIPA
• Strong understanding of PKI concepts and practical implementation
• Proficient with networking concepts
• Basic-to-intermediate understanding of SELinux
• Proficient with Ansible for configuration management and automation
• Experience with virtualization platforms including ESXi and KVM
• Solid understanding of software design concepts patterns tools and best practices
• Basic understanding of virtualization and hypervisor configuration

Desired

• Experience with a popular CI/CD system (GitLab Pipelines GitHub Actions Jenkins CircleCI or similar)
• Familiarity with device boot processes (BIOS UEFI PXE)
• Ability to code in additional languages such as Golang TypeScript C or C
• Experience with cybersecurity scanning hardening and secure system configuration in enclave or classified environments

What You Can Expect:

A culture of integrity.

At CACI we place character and innovation at the center of everything we do. As a valued team member youll be part of a high-performing group dedicated to our customers missions and driven by a higher purpose to ensure the safety of our nation.

An environment of trust.

CACI values the unique contributions that every employee brings to our company and our customers - every day. Youll have the autonomy to take the time you need through a unique flexible time off benefit and have access to robust learning resources to make your ambitions a reality.

A focus on continuous growth.

Together we will advance our nations most critical missions build on our lengthy track record of business success and find opportunities to break new ground in your career and in our legacy.

Pay Range:

There are a host of factors that can influence final salary including but not limited to geographic location Federal Government contract labor categories and contract wage rates relevant prior work experience specific skills and competencies education and certifications. Our employees value the flexibility at CACI that allows them to balance quality work and their personal lives. We offer competitive compensation benefits and learning and development opportunities. Our broad and competitive mix of benefits options is designed to support and protect employees and their families. At CACI you will receive comprehensive benefits such as; healthcare wellness financial retirement family support continuing education and time off benefits.

The proposed salary range for this position is: