Linux Administrator

Company: aqua IT
Location: Saint Louis
Posted on: February 16, 2026

Job Description:

Job Description Job Description Overview & Responsibilities: This opening is for an experienced Linux System Administrator to work on cloud-based systems with a mission operations team. The team is involved in operations and sustainment of multiple operational cloud deployed solutions. A successful candidate will have experience with installation, configuration, administration, support and maintenance of cloud-based systems. Primary responsibilities will involve taking a leadership role in system changes and improvements; working directly with government and contractor POCs to troubleshoot and responding to security reports; proactively monitor all operational systems and perform some of the more complex health checks; Deploy security patches and bug fixes to test and operational environments; update critical databases with new data; author and update operational and security documentation, including troubleshooting guides and SOPs. Qualifications: Active Top Secret clearance (TS/SCI preferred) DOD 8570 Certification (Security or equivalent or higher) Typically requires BS degree and 8 - 12 years of prior relevant experience or master’s with 6 – 10 years of prior relevant experience. Experience in AWS/Cloud technologies Advanced Linux administration experience with RHEL 7 or higher Knowledge of Systems, Architectural, SW Development and SW Sustainment Practices Proactive self-starter demonstrates a positive, willing attitude and excellent oral and written communication skills. Organizational Skills: Can plan and prioritize work. Follow tasks to their logical conclusion and make sure that everything has been done to the right standard. Good attention to detail. Communications: Ability to communicate clearly and efficiently with team members and clients, verbally and in writing. Able to present ideas in a variety of ways depending upon audience and context. Preferred: Experience with ArcGIS/ESRI automation and deployments IAC (CloudFormation, Terraform, Chef, Puppet, Anisible) Automation (Lambda, Ansible, Chef, Jenkins, Git) Low-level Engineering (Git, Jira, Agile tools/methods) Containers (Docker, ECS, EKS, Fargate, AKS) PowerShell and Bash Understanding of RDS and SQL Technology AWS Solutions Architect, AWS Developer, Certification(s) Experience with IC Cloud Architecture implementation methodologies

Keywords: aqua IT, Florissant , Linux Administrator, IT / Software / Systems , Saint Louis, Missouri