Security-Focused Systems Administrator — AWS, Kubernetes, TS/SCI

WarCollar Industries, LLC; Herndon (VA); On-site; USD 120,000 - 180,000; Full time

Benefits offered by this job

Medical insurance

PTO based on billable hours

Federal holidays + birthday

Job summary

WarCollar Industries is seeking a highly skilled Systems Administrator to support design, administration, security, and scalability of infrastructure hosting mission-critical applications across development, testing, training, and production environments. You will work with software developers, DevOps, and data engineers to maintain reliable, secure systems at enterprise scale.

The role emphasizes database management, cloud infrastructure (AWS), Kubernetes, security, and operational scalability,

Qualifications

• Active TS/SCI clearance with Full Scope Polygraph.
• 7+ years of experience working with SQL databases, including database administration, sizing, performance, and management.
• 4+ years of experience administering Linux and/or Windows operating systems.
• 2+ years of hands-on Elasticsearch experience. 2+ years of hands‑on Kubernetes experience, including cluster administration and troubleshooting.
• Demonstrated experience with AWS cloud infrastructure and services.
• Experience with CI/CD technologies such as GitLab, GitHub, or Jenkins.
• Experience with system security, vulnerability management, patching, VPNs, and SSL/TLS certificate management.
• Proven systems design, troubleshooting, scalability, and problem-solving capabilities.
• Strong verbal and written communication skills with the ability to collaborate effectively across technical teams.
• Ability to work fully onsite in Herndon, VA.

Responsibilities

• Cloud & Database Infrastructure: Deploy, provision, configure, and secure AWS resources including EC2, S3, RDS, EBS, CloudWatch, VPC, and related services.
• Support database sizing, performance, administration, and server security.
• Linux/Windows Admin: Administer and maintain Linux and/or Windows environments supporting development, testing, training, and production systems.
• Perform routine maintenance, troubleshooting, configuration, and performance optimization.
• DevOps & CI/CD: Build, maintain, monitor, and troubleshoot CI/CD pipelines using tools such as GitLab, GitHub, and Jenkins.
• Kubernetes & Containerization: Design, build, administer, maintain, and troubleshoot Kubernetes clusters and containerized environments to ensure reliable and uninterrupted operations.
• Security & Maintenance: Conduct vulnerability scans, apply security patches to physical and cloud infrastructure, manage VPN technologies, and maintain current SSL/TLS certificates and security configurations.
• Architecture & Scalability: Design and implement secure infrastructure enhancements to support new capabilities, improve system performance, increase scalability, and resolve infrastructure-related issues.

Skills

Cloud AWS

Database Admin

Linux/Windows Admin

CI/CD

Kubernetes

Security Patch Mgmt

Architecture & Scalability

Collaboration

Tools

GitLab

GitHub

Jenkins

Elasticsearch

AWS

Linux

Windows

Job description

WarCollar Industries is seeking a highly skilled Systems Administrator to support design, administration, security, and scalability of infrastructure hosting mission-critical applications across development, testing, training, and production environments. You will work with software developers, DevOps, and data engineers to maintain reliable, secure systems at enterprise scale.

The role emphasizes database management, cloud infrastructure (AWS), Kubernetes, security, and operational scalability,