Senior Linux Systems AdministratorBrown Technologies Incorporated • Vicksburg, Mississippi, United States
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Senior Linux Systems Administrator
Brown Technologies Incorporated
- Vicksburg, Mississippi, United States
- Vicksburg, Mississippi, United States
About
Full Time Vicksburg, MS, US
5 days ago Requisition ID: 1028
Salary Range: $100,000.00 To $150,000.00 Annually
Location:
Vicksburg, MS
Brown Technologies is a rapidly growing company with a proven record of success supporting complex, cutting-edge programs. We are an employee-centric company that understands the individuals who comprise our workforce are our most important asset, and we are proudly recognized as one of “The Best Place for Working Parents.” Come join our team of experienced, dedicated, and committed professionals whose focus is to solve the mission-critical problems of our customers.
Brown Technologies is currently seeking a Senior Linux Systems Administrator to support the United States Army Corps of Engineers (USACE) Engineer Research and Development Center (ERDC) in Vicksburg, MS. This role is primarily onsite, with a hybrid schedule that offers some flexibility for remote work.
Responsibilities
Administer and maintain enterprise Linux server environments (e.g., RHEL, Ubuntu) in a high availability configuration
Manage system performance, resource utilization, and overall health across Linux-based infrastructure
Install, configure, harden, and maintain Linux operating systems in accordance with DoD STIG and security requirements
Perform system patching, updates, and lifecycle management for Linux servers and associated applications
Manage and support containerized environments, including Kubernetes clusters and Docker-based workloads
Develop and maintain automation solutions using Ansible (or similar tools) for configuration management and system provisioning
Administer and support web and application servers, including NGINX, Apache, and Tomcat
Manage SSL/TLS certificates, including issuance, renewal, and integration with enterprise PKI
Support and troubleshoot smart card (CAC/PIV) authentication and certificate-based access mechanisms
Support integration with enterprise services, including Active Directory, LDAP, and identity management systems
Troubleshoot and resolve issues across operating systems, applications, storage, networking, and container platforms
Implement and maintain backup, recovery, and disaster recovery solutions for Linux systems
Manage system logging, monitoring, and performance tuning using enterprise tools
Maintain system documentation, including configurations, procedures, and architecture diagrams
Provide Tier 2/3 support for Linux-related incidents and service requests
Plan and execute system upgrades, migrations, and expansions with minimal downtime
Basic Qualifications
6+ years of experience administering Linux systems (e.g., RHEL, Ubuntu) in an enterprise environment
3+ years of experience implementing automation and configuration management (e.g., Ansible) in a production setting
3+ years of experience administering enterprise web/application servers (e.g., NGINX, Apache, Tomcat)
Strong experience administering enterprise Linux environments in a production, high availability environment
Proficiency in Linux system configuration, patching, performance tuning, troubleshooting, and system hardening (STIG compliance)
Hands‑on experience with containerization and orchestration platforms, including Kubernetes and Docker
Knowledge of SSL/TLS certificate management and integration with enterprise PKI environments
Experience supporting smart card (CAC/PIV) authentication and certificate-based access mechanisms
Working knowledge of identity and access integration (e.g., Active Directory, LDAP) in Linux environments
Solid understanding of enterprise storage and networking concepts (SAN/NAS, DNS, TCP/IP, VLANs)
Experience with system monitoring, logging, performance tuning, and troubleshooting across complex environments
Demonstrated experience supporting high availability, mission‑critical systems in a production environment
Experience supporting systems in secure or regulated environments (e.g., DoD STIG compliance or similar)
Must meet DoD 8140 IAT Level II requirements, including an approved baseline certification (e.g., Security+); must possess or be able to obtain computing environment certifications relevant to Linux
Active U.S. Government Top Secret/SCI (TS/SCI) clearance required, or the ability to obtain and maintain a TS/SCI clearance with a favorable background investigation and eligibility for expedited processing
Preferred Qualifications
Bachelor's degree from an accredited U.S. institution is strongly preferred; relevant experience may be considered in lieu of a degree
Brown Technologies, Inc. is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability, or veteran status.
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Languages
- English
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