Linux Systems Administrator

Nightwing provides technically advanced full-spectrum cyber, data operations, systems integration and intelligence mission support services to meet our customers' most demanding challenges. Our capabilities include cyber space operations, cyber defense and resiliency, vulnerability research, ubiquitous technical surveillance, data intelligence, lifecycle mission enablement, and software modernization. Nightwing brings disruptive technologies, agility, and competitive offerings to customers in the intelligence community, defense, civil, and commercial markets.

Roka Security is seeking a qualified Linux Systems Administrator to work with a close-knit team in a fast-paced, collaborative environment. This position will be responsible for IT administration for servers and systems all over the world supporting highly secure complex networks, system and network performance tuning, physical server deployments, and disaster recovery. The ideal candidate can work across the Linux, networking, and security worlds with strong experience in OSPF and Linux routing. This role requires a security-minded individual who is detail-oriented, skilled at making data-driven decisions to proactively address issues before they impact end users and always thinking about how to improve current technology and systems.

KEY RESPONSIBILITIES

System Administration:

Conduct day-to-day operations of customer networks including installation, configuration, and maintenance of Linux operating systems (e.g., Debian, Ubuntu)

Manage and maintain Linux servers ensuring optimal performance and availability

Configure and maintain Linux file systems, permissions, and security settings

Setup and operation of Linux services (e.g., OpenVPN, DNS, LDAP, e-mail, file services, Apache/NGINX)

Performance Monitoring and Optimization:

Monitor system performance, troubleshoot issues, and optimize system resources to ensure maximum uptime and efficiency

Analyze system logs, performance metrics, and resource utilization to identify root causes

Conduct preventive maintenance and health checks on deployed systems

Validate and test system performance and connectivity

Security Management:

Implement and maintain security measures to protect systems from vulnerabilities, unauthorized access, and malware threats

Manage the patching process for Linux servers

Ensure compliance with patch management policies and procedures

Perform security hardening on Linux systems

Technical Support:

Provide technical support and troubleshooting assistance to internal users and teams regarding Linux-related issues

Diagnose problems in a timely manner to minimize downtime and disruptions

Collaboration and Documentation:

Collaborate with cross-functional teams to support project initiatives and resolve technical issues

Document system configurations, procedures, and troubleshooting steps for knowledge sharing and training purposes

Document all service activities, configurations, and resolutions in ticketing systems

Contribute to knowledge base articles and best practices documentation

Education:

Associate or Bachelor's degree in Computer Science, Information Technology, or related field; OR equivalent combination of technical training and hands-on experience

Experience:

Directly relevant experience as a Linux System Administrator

Proven experience in managing and maintaining Linux servers (e.g., Debian, Ubuntu)

Experience troubleshooting hardware and software issues in production environments

Technical Skills:

Linux: Proficiency in managing and maintaining Linux servers (Debian, Ubuntu, etc.)

Strong understanding of Linux file systems, permissions, and security

Command line proficiency, system administration, log analysis, package management

Networking: Strong knowledge of networking concepts and protocols (TCP/IP, DNS, VPN, etc.)

Understanding of network security concepts and best practices

Configuration management experience (e.g., SaltStack, Ansible)

Professional Skills:

Excellent problem-solving and analytical skills

Strong communication and interpersonal skills

Self-motivated with ability to work independently and manage time effectively

Detail-oriented with strong documentation habits

Team player with positive attitude and willingness to learn

Comfortable working in fast-paced environments with competing priorities

PREFERRED QUALIFICATIONS

Certifications: Linux+ | RHCSA/RHCE | CompTIA Security+ | Network+

Experience with shell scripting (Bash, Python, etc.) for automation and task management

Familiarity with monitoring tools (Nagios, Zabbix, Prometheus, etc.)

Experience with configuration management tools (Ansible, Puppet, Chef, Salt)

Knowledge of containerization (Docker, Kubernetes)

Experience with backup and disaster recovery solutions

Familiarity with virtualization technologies (VMware, KVM, or similar)

Previous experience supporting government or DoD customers

Experience in managed service provider environments

COMPENSATION & BENEFITS

Competitive salary

Comprehensive health, dental, and vision insurance

401(k) with company match

PTO and paid holidays

Ongoing technical training and certification support

Salary & Benefits
The salary associated with this position ($99,000-$206,000) is commensurate with the selected candidate's qualifications, years of relevant experience, and demonstrated level of expertise. Compensation will be determined based on these factors to ensure alignment with skills, responsibilities, and market standards.

Nightwing offers medical, vision and dental insurance coverage in addition to a 401k plan, PTO, Holidays, and additional insurances.

Nightwing is An Equal Opportunity/Affirmative Action 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, age or any other federally protected class.