Senior System Administrator (SA) – Skill Level 3

Requisition: SADM3 
Required Clearance: Active TS/SCI with Full Scope Polygraph

Wyetech is seeking an experienced Senior System Administrator (SA3) to support the administration, configuration, maintenance, troubleshooting, and modernization of mission-critical Information Technology (IT) systems within complex Department of Defense (DoD) and Intelligence Community environments.

The successful candidate will join a large, integrated team of Government civilian and contractor System Administrators, Systems Engineers, and Network Engineers responsible for supporting both DevOps development environments and live operational systems.

The team manages Linux and Windows infrastructure, including physical servers and virtual machines, across three backend environments operating at different classification levels. These environments support mission and operations personnel and require reliable authentication services, Domain Name System (DNS) functionality, shared storage, home directories, and secure communication between systems and users.

The Senior System Administrator will provide hands-on technical support for daily operations, system monitoring, incident resolution, security compliance, storage management, virtualization, and infrastructure sustainment. The position requires strong troubleshooting capabilities, familiarity with secure enterprise environments, and the ability to coordinate effectively with technical teams across multiple contracts under direct Government leadership.

The ideal candidate will possess extensive Linux administration experience, a strong understanding of secure system configurations and DISA STIG requirements, and experience supporting enterprise infrastructure in demanding operational environments.

Required Skills/Experience

• Active TS/SCI clearance with Full Scope Polygraph.

• Extensive Linux System Administration experience meeting the qualifications for the System Administrator Level 3 labor category.

• Experience administering, configuring, maintaining, and troubleshooting Linux operating systems within complex enterprise environments.

• Experience supporting Windows systems and integrating Windows and Linux infrastructure.

• Demonstrated experience supporting STE/STN requirements and secure system configurations.

• Hands-on experience implementing, validating, and maintaining Defense Information Systems Agency (DISA) Security Technical Implementation Guide (STIG) compliance on Linux systems.

• Experience identifying configuration deficiencies, implementing security remediation, and maintaining system compliance with applicable security requirements.

• Experience administering and troubleshooting physical servers and virtual machines.

• Experience managing enterprise storage infrastructure, including CFS/DFS, NetApp, or comparable storage technologies.

• Experience administering virtualization platforms such as Proxmox, Red Hat Kernel-based Virtual Machine (KVM), VMware, or comparable technologies.

• Working knowledge of IP networking, network protocols, routing, connectivity, and firewall configurations.

• Experience diagnosing and resolving network-related issues affecting server connectivity, system communications, and enterprise services.

• Experience supporting authentication services, DNS, shared drives, home directories, and associated enterprise infrastructure.

• Experience supporting IT systems across multiple environments with differing security classification requirements.

• Familiarity with container technologies and cloud-based infrastructure environments.

• Experience monitoring enterprise systems, identifying operational issues, and resolving technical incidents.

• Experience managing and resolving support requests through ticketing systems such as Jira.

• Experience supporting DevOps environments and operational production systems.

• Experience performing system installation, configuration, upgrades, patching, maintenance, and performance optimization.

• Ability to troubleshoot complex issues involving server hardware, operating systems, applications, storage, networking, and system integration.

• Strong technical documentation, analytical, communication, and problem-solving skills.

• Ability to collaborate with System Administrators, Systems Engineers, Network Engineers, and Government stakeholders across multiple contracts.

• Ability to independently manage assigned tasks and respond effectively to mission-critical operational requirements.

Desired Skills/Experience

• Experience using infrastructure automation and configuration management tools such as Ansible or SaltStack.

• Experience developing and maintaining automation scripts using Bash, Python, Perl, or comparable scripting languages.

• Experience automating repetitive system administration tasks, configuration management, compliance validation, and operational maintenance activities.

• Experience administering enterprise backup and recovery solutions such as Rubrik or Veritas NetBackup.

• Experience supporting backup scheduling, data restoration, disaster recovery, and system recovery operations.

• Experience with hyperconverged infrastructure platforms such as Harvester, Nutanix, Cisco HyperFlex, or comparable technologies.

• Experience integrating virtualization, storage, networking, and compute resources within hyperconverged environments.

• Experience supporting infrastructure modernization initiatives involving automation, containerization, virtualization, and cloud technologies.

• Familiarity with DevOps methodologies, infrastructure lifecycle management, and enterprise system integration.

Responsibilities and Capabilities

Linux and Windows Systems Administration

• Administer, configure, maintain, and troubleshoot Linux and Windows operating systems supporting mission-critical government environments.

• Manage physical servers, virtual machines, and associated enterprise infrastructure.

• Install, configure, update, patch, and maintain operating systems and supporting software.

• Perform daily system monitoring to identify operational issues, resource constraints, security concerns, and performance deficiencies.

• Manage system configurations, user accounts, access permissions, authentication services, and operating system security settings.

• Support enterprise services including DNS, shared storage, home directories, and system-to-system communications.

• Maintain the integrity, reliability, availability, and performance of supported IT systems.

• Implement operating system enhancements and configuration improvements to optimize system reliability and operational effectiveness.

• Troubleshoot complex hardware, operating system, application, and software integration issues.

• Coordinate system maintenance activities and minimize disruptions to mission operations.

Security Compliance and System Hardening

• Implement and maintain DISA STIG compliance for Linux systems and associated infrastructure.

• Support STE/STN security requirements and secure system configuration practices.

• Evaluate system configurations against applicable security requirements and identify deficiencies requiring remediation.

• Apply security updates, configuration changes, and system hardening measures to maintain compliance.

• Support security assessments, technical reviews, and ongoing compliance activities.

• Document security configurations, remediation actions, and compliance-related technical findings.

• Collaborate with cybersecurity personnel, Systems Engineers, and Government stakeholders to resolve security-related technical issues.

• Maintain system configurations consistent with applicable DoD and Intelligence Community security requirements.

• Support operational environments with differing classification levels while maintaining appropriate system separation and security controls.

Storage, Virtualization, and Infrastructure Management

• Administer and maintain enterprise storage infrastructure, including CFS/DFS, NetApp, and comparable storage platforms.

• Support shared drives, home directories, storage permissions, and data accessibility for mission and operations users.

• Configure, maintain, and troubleshoot virtualization platforms such as Proxmox, Red Hat KVM, and VMware.

• Support the provisioning, configuration, maintenance, and lifecycle management of virtual machines.

• Monitor compute, memory, storage, and system resource utilization to identify performance constraints and capacity requirements.

• Optimize infrastructure resource allocation and support system capacity analysis and planning.

• Troubleshoot complex issues involving storage availability, virtual infrastructure, system connectivity, and application performance.

• Assist with infrastructure upgrades, migrations, and system modernization efforts.

• Support containerized and cloud-based environments as required by mission and program needs.

Network and Enterprise Services Support

• Support IP networking and firewall configurations required for enterprise system communications.

• Troubleshoot network connectivity issues affecting servers, applications, storage resources, and operational users.

• Coordinate with Network Engineers to resolve routing, firewall, DNS, and network interface issues.

• Support authentication services, user access, and system communications across interconnected enterprise environments.

• Maintain system and network component configurations to support reliable operational performance.

• Analyze system administration dependencies within Service-Oriented Architecture (SOA) environments.

• Collaborate with engineering teams to identify and resolve infrastructure integration issues.

• Support the design and implementation of systems, mission architectures, and associated hardware.

DevOps and Operational Sustainment

• Support both DevOps development environments and live operational systems.

• Collaborate with development, engineering, and operations teams to maintain infrastructure supporting mission applications.

• Monitor operational systems and respond to emerging technical issues affecting mission capabilities.

• Review system monitoring dashboards, team communications, email, and Jira tickets to identify daily priorities and mission-critical support requirements.

• Investigate reported incidents, perform root cause analysis, and implement corrective actions.

• Coordinate infrastructure changes, software deployments, system upgrades, and maintenance activities.

• Support improvements to system administration workflows, operational procedures, and infrastructure reliability.

• Assist with system automation, configuration management, and infrastructure modernization initiatives.

• Maintain technical documentation, configuration records, and operational procedures.

Technical Support and Incident Resolution

• Provide Tier 1 Help Desk and Tier 2 escalation support for IT systems and associated infrastructure.

• Identify, diagnose, troubleshoot, and resolve technical issues affecting client/server, storage, network, and other supported devices.

• Provide assistance to users accessing and operating IT systems.

• Manage assigned support tickets, document technical findings, and communicate resolution status.

• Perform detailed troubleshooting of escalated system issues and provide technical recommendations.

• Support dispatch and resolution processes for hardware and system-related incidents.

• Remain engaged throughout the troubleshooting and resolution lifecycle for assigned technical problems.

• Provide timely technical updates and escalation information to Government leadership, agency management, and internal customers.

• Analyze recurring incidents and recommend improvements to reduce operational disruptions.

Systems Engineering Coordination and Technical Collaboration

• Collaborate with Government civilian leads, contractor System Administrators, Systems Engineers, and Network Engineers across multiple contracts.

• Support system design, mission architecture planning, and infrastructure engineering activities.

• Coordinate technical requirements, configuration changes, and system integration activities with multidisciplinary teams.

• Analyze system performance, operational requirements, and infrastructure dependencies to support effective technical decisions.

• Participate in technical reviews, engineering discussions, operational coordination meetings, and troubleshooting sessions.

• Provide technical recommendations to improve system performance, reliability, maintainability, and security.

• Maintain accurate documentation of system configurations, operational procedures, technical issues, and corrective actions.

• Support assigned technical tasks under direct Government leadership and established program priorities.

• Perform additional System Administration responsibilities as required to support mission objectives.

Qualifications

Candidates must meet one (1) of the following education and experience combinations:

Option 1 – Bachelor's Degree

• Bachelor's degree in a technical discipline from an accredited college or university.

• Fifteen (15) years of experience as a System Administrator supporting programs and contracts of similar scope, type, and complexity.

OR

Option 2 – Experience Substitution

• Twenty (20) years of relevant System Administration experience.

• Five (5) additional years of System Administration experience may be substituted for the bachelor's degree requirement, in addition to the fifteen (15) years of required experience.

Additional Qualifications

• Demonstrated experience administering Linux systems within complex enterprise or mission-critical environments.

• Experience implementing STE/STN and DISA STIG compliance requirements on Linux infrastructure.

• Experience supporting enterprise storage technologies and virtualization platforms.

• Working knowledge of IP networking, firewalls, authentication services, DNS, and shared storage.

• Experience supporting physical and virtual infrastructure across multiple operational environments.

• Familiarity with containers and cloud infrastructure.

• Experience supporting DevOps activities and live operational systems.

• Ability to troubleshoot complex technical issues involving operating systems, storage, virtualization, networking, and applications.

• Strong communication skills and the ability to coordinate effectively with multidisciplinary technical teams and Government stakeholders.

Security Clearance and Additional Requirements

• Required Clearance: Active TS/SCI with Full Scope Polygraph.

• U.S. Citizenship required.

• Must maintain applicable security clearance and program access requirements throughout employment.

At Wyetech, you’ll be at the center of an award-winning corporate culture, breaking technological barriers and solving real-world problems for our federal government customers. We are committed to hiring the best of the best, and in return, we offer a world-class, truly unique employee experience that is rare within our industry.

Wyetech believes in generously supporting employees as they prepare for retirement. The company automatically contributes 20% of each employee's gross compensation to a Simplified Employee Pension (SEP) IRA, with no requirement for employee matching. All contributions are fully vested from day one, ensuring immediate ownership of retirement funds.

Additional benefits include:

Wyetech provides a generous PTO plan of up to 200 hours annually, aligned with applicable state leave regulations. Employees have the flexibility to adjust their PTO allocation at the start of each calendar year, ensuring it meets their evolving needs.

Full-time employees have the option to participate in a variety of voluntary benefit plans including:

• A Choice of Medical Plan Options, some with Health Savings Account (HSA)

• Vision and Dental

• Life and AD&D Benefits

• Short and Long-Term Disability

• Hospital Indemnity, Accident, and Critical Illness Insurances

• Optional Identity Theft and Legal Protection Services

• Employee Referral Bonus Eligibility up to $10,000

• Mobility Among Wyetech-supported Contracts

• Various contract and work locations throughout Maryland, Virginia, Colorado, Texas, Utah, Alaska, Hawaii and OCONUS

• Various team-building events throughout the year, such as monthly lunches, summer company picnic, and an annual holiday party.

• Employees receive two complimentary branded clothing orders annually.

Hourly Pay Range: $70.53–$111.29

Hourly pay rates listed for this position serve as a general guideline and are not a guarantee of compensation. Compensation will vary dependent upon factors including but not limited to: Government contract rates; education; relevant prior work experience, knowledge, skills, and competencies; certifications; and geographic location. Hourly pay rates reflect the pre-benefit gross wage amounts.

Wyetech, LLC 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 status as a protected veteran.

Affirmative Action Statement:

Wyetech, LLC is committed to the principles of affirmative action in all hiring and employment for minorities, women, individuals with disabilities, and protected veterans.

Accommodations:

Wyetech, LLC is committed to providing an inclusive and accessible hiring process. If you need any accommodations during the application or interview process, please contact Brittney Wood. at 844-WYETECH x727 or staffing@wyetech.com. We are happy to provide reasonable accommodations to ensure equal access to all candidates.

Wyetech Terms and Conditions:

1. Wyetech may reach out to you via SMS messages during the course of your Wyetech candidacy.

2. You can cancel the SMS service at any time. Just text "STOP" to the short code. After you send the SMS message "STOP" to us, we will send you an SMS message to confirm that you have been unsubscribed. After this, you will no longer receive SMS messages from us. If you want to join again, just sign up as you did the first time and we will start sending SMS messages to you again.

3. If you are experiencing issues with the messaging program you can reply with the keyword HELP for more assistance, or you can get help directly at IT@wyetech.com, 844-WYETECH (844-993-8324).

4. Carriers are not liable for delayed or undelivered messages

5. As always, message and data rates may apply for any messages sent to you from us and to us from you. If you have any questions about your text plan or data plan, it is best to contact your wireless provider.

6. If you have any questions regarding privacy, please read our privacy policy below.

Privacy Policy:

We collect your mobile number and related opt-in data for the delivery of SMS messages. Your mobile opt-in data and consent will not be shared with third parties or affiliates for marketing or promotional purposes.