Sr. Systems Administrator

Chenega Corp•St Louis, MO

1d•Hybrid

About The Position

Sr. Systems Administrator St. Louis, MO Are you ready to enhance your skills and build your career in a rapidly evolving business climate? Are you looking for a career where professional development is embedded in your employer’s core culture? If so, Chenega Military, Intelligence & Operations Support (MIOS) could be the place for you! Join our team of professionals who support large-scale government operations by leveraging cutting-edge technology and take your career to the next level! Chenega Agile Real-Time Solutions (CARS) was created with the purpose of providing integrated enterprise IT support to Federal customers both CONUS and OCONUS. CARS employs Subject Matter Experts (SMEs) with decades of experience working in the Federal marketplace. We are seeking an experienced Senior Systems Administrator to lead the design, management, and optimization of our Windows-based systems and AWS cloud infrastructure. The ideal candidate will have deep expertise in Windows environments, cloud technologies, and cybersecurity, with a proven ability to architect and support secure, scalable enterprise systems. This role provides an opportunity to work with cutting-edge technologies, contributing to the high availability, performance, and security of our IT operations.

Requirements

Bachelor’s degree in information technology, Computer Science, Engineering, OR related field, and 8+ years of prior relevant experience OR Master’s with 6+ years of prior relevant experience.
8+ years of enterprise systems administration experience.
Experience supporting mission-critical DoD or Intelligence Community environments.
Strong administration experience with: Microsoft Windows Server, VMware vSphere, DNS/DHCP, Group Policy
Experience with scripting and automation using PowerShell, Bash, or Python.
Must have a Security+ CE or higher DoD 8570/8140 certification
Experience supporting customer mission systems.
Experience supporting GEOINT applications.
Experience with: VMware vCenter, Git, ServiceNow
Active TS/SCI clearance required
Successfully pass background and drug screening
Ability to work independently and yet be effective within a team setting
Must be capable of managing multiple efforts with time-related constraints in a fast-paced contracting environment
Demonstrated ability to effectively communicate and collaborate with diverse internal and external stakeholder groups and individuals
Friendly presence, helpful attitude, good interpersonal skills, and ability to work well with others.
Excellent skills in Microsoft Word, Excel, and other Office applications
Proficient with Microsoft Office Applications, and experience working in a home office setting as well as the ability to train end users on frequently asked technical issues.
Ability to provide technical assistance and support over the phone; good phone skills, professional demeanor, and previous customer service experience strongly desired.
Good problem-solving skills; ability to visualize a problem/situation and think abstractly to solve it
Knowledge of RMF security controls and vulnerability remediation
Strong administration experience with: Red Hat Enterprise Linux (RHEL), Active Directory
Experience implementing and maintaining STIG compliance
Experience with: Ansible, SCCM/MECM, Splunk, Elastic Stack
Red Hat Certified Systems Administrator (RHCSA)
Microsoft Certified: Windows Server Hybrid Administrator Associate
ITIL Foundation Certification
Strong troubleshooting and analytical skills
Ability to obtain CI Polygraph
Ability to work Shift hours. Shifts will be identified upon hire
Ability to work nights/weekends/holidays as required
Ability to work independently and yet be effective within a team setting
Must be capable of managing multiple efforts with time-related constraints in a fast-paced contracting environment
Demonstrated ability to effectively communicate and collaborate with diverse internal and external stakeholder groups and individuals

Nice To Haves

Experience supporting GEOINT applications.
Experience with: VMware vCenter, Git, ServiceNow
Red Hat Certified Systems Administrator (RHCSA)
Microsoft Certified: Windows Server Hybrid Administrator Associate
ITIL Foundation Certification

Responsibilities

Administer, maintain, and support the application with the customer enterprise.
Perform installation, configuration, patching, upgrades, and lifecycle management of Windows and Linux servers.
Monitor system health, performance, and availability using enterprise monitoring tools.
Troubleshoot complex hardware, software, operating system, and application issues.
Support deployment activities across development, test, staging, and production environments.
Coordinate scheduled maintenance windows and execute system upgrades with minimal operational impact.
Develop and maintain automation scripts using PowerShell, Bash, or Python to improve operational efficiency.
Perform backup, recovery, and disaster recovery operations.
Support accreditation activities and ensure compliance with customer, DoD, RMF, DISA STIG, and security requirements.
Manage user accounts, permissions, and Active Directory integrations.
Collaborate with security teams to remediate vulnerabilities and maintain compliance.
Support incident response, root cause analysis, and corrective action implementation.
Document system configurations, standard operating procedures, and technical documentation.
Participate in on-call rotation and provide after-hour support when required.
Interface directly with customers to address operational tasking and mission requirements.
Other duties as assigned.