> Markdown version of [/jobs/ext/2985832-senior-systems-administrator](https://www.wearedevelopers.com/jobs/ext/2985832-senior-systems-administrator). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Senior Systems Administrator - **Company:** Saalex Corporation - **Location:** Ridgecrest, CA, United States - **Experience:** Expert - **Salary:** $79,040.0 - $83,200.0 - **Contract:** Permanent contract - **Skills:** Agile Methodology, Amazon Web Services, Amazon Elastic Compute Cloud, Amazon S3, Confluence, JIRA, Bash Shell, Ubuntu (Operating System), CentOS, Cloud Computing, CompTIA Security+, Cyber Security, Information Systems, Continuous Delivery, Continuous Integration, Linux, Domain Name System (DNS), Identity and Access Management, Python (Programming Language), Linux System Administration, OpenShift, Performance Tuning, Scrum Methodology, Red Hat Enterprise Linux, Ansible, Security Content Automation Protocol, TCP/IP, Software Vulnerability Management, Network Routing, Software Repository, Scripting, Load Balancing, Cloud Platform System, Delivery Pipeline, Firewalls (Computer Science), Amazon Virtual Private Cloud (VPC), Cloudformation, SC Clearance, Amazon Relational Database Service, Containerization, Gitlab-ci, Kubernetes, Information Technology, Atlassian Tools, Nessus, Cloudwatch, Terraform, Devsecops, Docker, Jenkins, User Accounts - **Published:** September 18, 2026 - **Apply:** https://www.disabledperson.com/jobs/75274681-senior-systems-administrator ## About the Role Are you an experienced Red Hat Certified System Administrator (RHCSA) looking for high-impact technical work paired with the flexibility of a part-time schedule? At Saalex Solutions, we support vital Department of Defense tactical training systems and test range capabilities. We are actively seeking a Senior Red Hat & Cloud Systems Administrator-while targeting a Senior, motivated Journeyman-level professionals with the right mindset, strong technical foundation, and drive to grow are strongly encouraged to apply! In this role, you will help maintain, automate, and modernize mission-critical systems across hybrid enterprise environments-bridging on-premise high-performance Linux enclaves with AWS cloud architectures. This position offers the ideal blend of high technical autonomy, cutting-edge DevSecOps tooling, and a flexible 20-25 hour workweek., * Operating System Certification: Active Red Hat Certified System Administrator (RHCSA) or Red Hat Certified Engineer (RHCE). * Cybersecurity Baseline (DoD 8140 / 8570 Compliant): Active DoD 8570/8140 IAT Level II certification (e.g., CompTIA Security+ CE, CCNA Security, CySA+, or equivalent). * Cloud & Automation Exposure: Practical experience with core AWS services (VPC, EC2, S3, IAM) and scripting/automation tools (Bash, Python, Ansible, or Terraform). * Security Hardening: Familiarity with DISA STIGs, SCAP compliance tools, and vulnerability remediation. * Master's degree with 5-7+ years of relevant experience, OR Bachelor's degree in Computer Science, Information Systems, Engineering, or related technical field with 7-10+ years of hands-on experience, OR 8-10+ years of progressive, hands-on Linux system administration experience (RHEL, CentOS, Ubuntu) and advanced technical proficiency. Desired: * AWS Certified Solutions Architect or AWS Certified SysOps Administrator. * Hands-on experience with containerization technologies (Docker, Podman, Kubernetes/OpenShift). * Prior experience supporting Navy/DoD test range facilities (NAWCWD China Lake / Point Mugu or similar SSA environments). * Familiarity with Atlassian tools (Jira, Confluence) or enterprise Git repositories., * Master's degree with 5-7+ years of relevant experience, OR Bachelor's degree in Computer Science, Information Systems, Engineering, or related technical field with 7-10+ years of hands-on experience, OR 8-10+ years of progressive, hands-on Linux system administration experience (RHEL, CentOS, Ubuntu) and advanced technical proficiency., * Must possess an active Secret clearance with the ability to gain and maintain a Top-Secret clearance. Requirements to obtain a clearance include US Citizenship, security investigation, etc. ## Description As our Linux and Cloud systems resource, you will perform hands-on administration, hardening, and automation across both classified and unclassified environments: * Enterprise Linux Administration: Deploy, configure, and administer multi-distribution Linux environments (primarily Red Hat Enterprise Linux (RHEL), CentOS, and Ubuntu) supporting real-time servers, lab environments, and field engineering workstations. * AWS Cloud Engineering: Support, deploy, and maintain scalable AWS infrastructure utilizing VPC, EC2, EBS, S3, IAM, CloudWatch, RDS, and EFS. * Infrastructure as Code & Automation: Automate routine provisioning, configuration, and deployments using Ansible, Terraform, or AWS CloudFormation. * System Hardening & Compliance: Apply DISA Security Technical Implementation Guides (STIGs), evaluate Nessus/ACAS scan findings, and remediate vulnerabilities in alignment with DoD Risk Management Framework (RMF) controls. * CI/CD & DevSecOps Enablement: Support and maintain continuous integration/continuous deployment pipelines (GitLab CI/CD, Jenkins, AWS CodePipeline) to enable reliable, secure software releases. * Performance & Network Tuning: Proactively monitor server health, perform root-cause analysis on system alerts, and troubleshoot network routing (TCP/IP, DNS, firewalls, and load balancing). * Identity & Access Management: Administer user accounts, role-based privileges, and group security policies in accordance with DoD and Navy cybersecurity directives. * Agile Collaboration: Participate in Agile/Scrum sprint coordination, providing dependable infrastructure and deployment support to software developers, test engineers, and cyber leads. * Other duties as assigned. ## Related Videos - [Docker network without Docker](https://www.wearedevelopers.com/videos/1418-docker-network-without-docker) - [Improving quality with Agentic AI with Rovo Dev and Xray](https://www.wearedevelopers.com/videos/2005-improving-quality-with-agentic-ai-with-rovo-dev-and-xray) - [Docker Compose: Rediscovered](https://www.wearedevelopers.com/videos/1978-docker-compose-rediscovered) - [Security Pitfalls for Software Engineers](https://www.wearedevelopers.com/videos/726-security-pitfalls-for-software-engineers) - [Docker exec without Docker](https://www.wearedevelopers.com/videos/1094-docker-exec-without-docker) - [Docker build without Docker](https://www.wearedevelopers.com/videos/100114-docker-build-without-docker) ## Related Articles - [How We Built a Worry-Free System That Runs for 10+ Years – And What We’d Do Again](https://www.wearedevelopers.com/magazine/751-how-we-built-a-worry-free-system-that-runs-for-10-years-and-what-we-d-do-again) - [Is Software Engineering Over-Saturated?](https://www.wearedevelopers.com/magazine/418-is-software-engineering-over-saturated) - [Highest Paying Tech Companies for Developers](https://www.wearedevelopers.com/magazine/220-highest-paying-tech-companies-for-developers) - [What’s the Difference between a Junior, Mid, and Senior Developer?](https://www.wearedevelopers.com/magazine/238-what-s-the-difference-between-a-junior-mid-and-senior-developer) - [What Are The Top Skills Required For Azure Developers?](https://www.wearedevelopers.com/magazine/77-what-are-the-top-skills-required-for-azure-developers) - [Best Paying Jobs in Technology](https://www.wearedevelopers.com/magazine/256-best-paying-jobs-in-technology)