Systems Administrator - Senior

Job Description

Job Description

Senior Systems Administrator Location:

Chantilly, VA & Wright-Patterson AFB, OH

Employment Type:

Full-Time

Salary:

Depending on experience

Job Summary

We are seeking an experienced Senior Systems Administrator to support mission-critical enterprise applications, infrastructure, and platform services within a secure government environment. The ideal candidate will be responsible for maintaining, troubleshooting, and enhancing Windows and UNIX/Linux-based systems while ensuring high availability, security, and operational efficiency.

This role requires expertise in enterprise infrastructure, DevSecOps environments, system administration, network operations, and cloud technologies supporting highly secure environments.

Key Responsibilities

• Administer and maintain Windows and UNIX/Linux server environments.

• Install, configure, and support operating systems and enterprise applications.

• Monitor system performance, availability, and overall infrastructure health.

• Troubleshoot hardware, software, storage, network, and operating system issues.

• Provide Tier 1 and Tier 2 technical support for enterprise systems.

• Manage user accounts, permissions, and system security.

• Support server, storage, networking, and virtual infrastructure.

• Configure and maintain enterprise network components.

• Perform system upgrades, patch management, and operating system enhancements.

• Analyze system performance and conduct capacity planning.

• Integrate new technologies into existing enterprise environments.

• Support DevSecOps processes and infrastructure automation.

• Collaborate with engineering teams on system architecture and deployment activities.

• Maintain documentation, procedures, and technical runbooks.

• Participate in training, knowledge sharing, and continuous process improvement.

• Escalate critical incidents and communicate status to stakeholders.

Required Qualifications

• Active Top Secret/SCI Security Clearance with CI Polygraph .

• DoD 8570 IAT/IAM Level II Certification.

• Experience supporting enterprise Windows and UNIX/Linux environments.

• Strong understanding of enterprise infrastructure and systems administration.

• Experience working within DevSecOps environments.

• Knowledge of Oracle and/or CentOS architecture.

• Experience with cloud infrastructure and Platform as a Service (PaaS).

• Familiarity with OpenShift environments.

• Working knowledge of Java-based applications.

• Experience using GitLab, Bitbucket, Jenkins, Nexus, Jira, and Confluence.

• Strong troubleshooting and analytical skills.

• Ability to prioritize multiple tasks in a fast-paced environment.

• Excellent verbal and written communication skills.

Preferred Qualifications

• Bachelor's Degree in Information Technology, Computer Science, Information Systems, or a related discipline.

• 10+ years of enterprise systems administration experience.

• Experience supporting Intelligence Community or Department of Defense programs.

• Strong understanding of enterprise architecture and secure infrastructure.

• Experience with risk management and compliance.

• Knowledge of mission-critical application support.

Technical SkillsOperating Systems

• Windows Server

• UNIX

• Linux

• CentOS

Cloud & Infrastructure

• Cloud Platforms

• OpenShift

• Platform as a Service (PaaS)

• Enterprise Infrastructure

• Server Administration

• Storage Administration

• Network Administration

DevSecOps Tools

• GitLab

• Bitbucket

• Jenkins

• Nexus

• Jira

• Confluence

Technologies

• Oracle

• Java

• System Monitoring

• Capacity Planning

• Infrastructure Automation

• Network Troubleshooting

Soft Skills

• Strong analytical and problem-solving abilities.

• Excellent communication and interpersonal skills.

• Ability to work independently and within cross-functional teams.

• Strong organizational and time-management skills.

• Detail-oriented with excellent documentation practices.

• Adaptable and able to manage multiple priorities.

• Continuous learning mindset.

Education & Experience

• High School Diploma/GED with 16+ years of relevant experience, or

• Associate Degree with 14+ years of relevant experience, or

• Bachelor's Degree with 12+ years of relevant experience, or

• Master's Degree with 10+ years of relevant experience.

Ideal Candidate

The ideal candidate is a senior systems administrator with extensive experience managing secure enterprise Windows and Linux environments, supporting DevSecOps operations, and maintaining mission-critical infrastructure. Candidates should possess an active TS/SCI clearance with CI Polygraph , strong troubleshooting expertise, and experience working within highly secure government or defense environments.

\nCompany Description

W3Global was established in 2006 in Fremont, CA with a vision: simplify the recruiting process and develop an industry-disrupting platform to connect candidates with clients. Our cutting-edge Applicant Tracking System enables us to find the right person for the right job, creating value for job seekers and employers. While W3Global initially focused on IT staffing, we have expanded the business to serve many other industries, including accounting and finance, legal, engineering, human resources, government and more.

We’re proud of the investments we’ve made in our team, having grown from four to 1000 employees and evolving into one of the leading recruitment and staffing solution providers in the industry. Our recruiters and account managers are passionate about connecting qualified professionals with the right positions in small, medium, and large companies.

Our Services
W3Global understands the natural ups and downs of an organization’s staffing needs. We are continuously adapting to industry and economic changes to find the right candidates.

We specialize in placing permanent, direct, contract, and temporary positions for companies of any size. Our recruiting services include sourcing, recruiting, screening, interview management, salary negotiations, training, and onboarding.

We are committed to helping organizations redefine their recruitment process by delivering our SaaS-based proprietary application tracking system software.

Our Expertise
W3Global has been delivering staffing solutions for nearly two decades; we know which recruiting strategies work best. Our expert team is committed to developing a customized solution to fit your company’s unique needs.

As a W3Global client, you’ll also receive personalized assistance from a seasoned team of staffing specialists. We are committed to providing both technical support and industry expertise to simplify the hiring process. We know that your time matters. W3Global will help you streamline the hiring process, getting it done and getting it right.

Company Description

W3Global was established in 2006 in Fremont, CA with a vision: simplify the recruiting process and develop an industry-disrupting platform to connect candidates with clients. Our cutting-edge Applicant Tracking System enables us to find the right person for the right job, creating value for job seekers and employers. While W3Global initially focused on IT staffing, we have expanded the business to serve many other industries, including accounting and finance, legal, engineering, human resources, government and more.\r\n\r\nWe’re proud of the investments we’ve made in our team, having grown from four to 1000 employees and evolving into one of the leading recruitment and staffing solution providers in the industry. Our recruiters and account managers are passionate about connecting qualified professionals with the right positions in small, medium, and large companies.\r\n\r\nOur Services\r\nW3Global understands the natural ups and downs of an organization’s staffing needs. We are continuously adapting to industry and economic changes to find the right candidates.\r\n\r\nWe specialize in placing permanent, direct, contract, and temporary positions for companies of any size. Our recruiting services include sourcing, recruiting, screening, interview management, salary negotiations, training, and onboarding.\r\n\r\nWe are committed to helping organizations redefine their recruitment process by delivering our SaaS-based proprietary application tracking system software.\r\n\r\nOur Expertise\r\nW3Global has been delivering staffing solutions for nearly two decades; we know which recruiting strategies work best. Our expert team is committed to developing a customized solution to fit your company’s unique needs.\r\n\r\nAs a W3Global client, you’ll also receive personalized assistance from a seasoned team of staffing specialists. We are committed to providing both technical support and industry expertise to simplify the hiring process. We know that your time matters. W3Global will help you streamline the hiring process, getting it done and getting it right.