Senior Level System Administrator Jobs
Senior level system administrator jobs put experienced professionals in charge of infrastructure strategy, system reliability, and the engineering teams or cross-functional projects that keep enterprise environments running. Openings are concentrated across on-site, remote, and hybrid settings in Technology & Software, Consulting & Professional Services, and Automotive, with employers like Axway, Amentum, and Related hiring at this level now.
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Showing 5 of 8+ Senior Level System Administrator jobs
INTRODUCTION
Join a team that powers the business enterprise behind the mission. Freedom supports the sustainment, modernization, and transformation of more than 100 enterprise business systems that enable tens of thousands of government personnel, industry partners, and prospective employees worldwide. Our teams develop, modernize, secure, and operate the applications and services that support workforce management, training, financial operations, acquisitions, security processing, and executive decision-making across multiple secure environments. As part of this program, you will work alongside experts in software engineering, cloud computing, DevSecOps, systems engineering, and enterprise platforms to modernize legacy systems, automate business processes, and deliver innovative solutions that improve efficiency, reduce costs, and enhance the user experience. The work you perform will help ensure the organization has the technology, information, and capabilities needed to support its workforce and accomplish its mission.
Join Our Mission-Focused Team — This Position Is Eligible for a $25,000 Welcome Bonus for Qualified Candidates!
We are seeking a Senior System Administrator for one of our PRIME CONTRACTS supporting mission-critical enterprise applications and services across the Government Corporate Management Services (CMS) portfolio. Our mission supports the Government Corporate Management Services (CMS) by providing full life cycle support services through the sustainment, modernization, and transformation of enterprise corporate applications. As soon as an employee enters a customer facility, they touch one of these applications, which are critical to the daily functions of thousands of users across acquisition, business, finance, HR, training, recruitment, program management, security, logistics, and more. Come join our diverse and growing team with lots of opportunities!
Primary Responsibilities:
- Work on a fast-paced team providing support for the implementation, troubleshooting, and maintenance of Information Technology (IT) systems supporting critical enterprise applications.
- Provide senior-level technical leadership in the administration, operation, troubleshooting, and maintenance of enterprise IT systems and infrastructure. Serve as a leader and mentor for the system administration team, providing direction, guidance, and oversight while maintaining a strong hands-on role in day-to-day operations and complex technical problem resolution.
- Manage IT system infrastructure and associated processes, ensuring the availability, reliability, security, and performance of enterprise applications and services.
- Provide day-to-day operations, monitoring, maintenance, and problem resolution for client systems, servers, storage platforms, network devices, and related infrastructure.
- Provide Tier 1 (Help Desk) and Tier 2 (Escalation) support, including problem identification, diagnosis, troubleshooting, and resolution. Serve as a senior escalation point for complex technical issues and provide technical direction and guidance to other system administrators.
- Support the escalation process and communicate system status, issues, and resolutions to agency management and internal stakeholders.
- Assist with hardware support activities, dispatch processes, and issue resolution through completion.
- Configure, administer, and maintain Windows and UNIX/Linux operating systems, including software installation, patching, system hardening, and performance tuning.
- Maintain the integrity and availability of infrastructure components while implementing enhancements to improve reliability, scalability, and operational efficiency.
- Collaborate with engineering and development teams to support infrastructure modernization efforts, including evaluating, testing, and implementing technology solutions that enhance system capabilities.
- Participate in the assessment of existing systems and architectures, providing operational and technical input for initiatives involving automation, DevOps practices, cloud technologies, and application modernization.
- Manage the planning, testing, deployment, and sustainment of infrastructure and application changes across on-premises, hybrid and cloud-hosted environments, as applicable.
- Analyze operational, security, compliance, and technical considerations associated with infrastructure changes and technology migrations.
- Develop and maintain technical documentation, standard operating procedures, and system configuration baselines.
- Serve as a technical resource, helping to promote knowledge sharing, consistency, and continuous improvement across the team.
Technology Stack:
- AWS
- Ansible
- Docker
- BigFix
- ElasticSearch
- Terraform
- Jenkins
- Linux
- Windows
- GitLab
Required Qualifications:
- TS/SCI with Polygraph
- A bachelor’s degree and fifteen (15) years of experience as a system administrator on programs of similar scope and complexity is required. In lieu of a bachelor’s degree twenty (20) years of experience required.
- In depth Linux experience.
- Familiarity with PowerShell and Bash scripting languages.
- Experience with system hardening.
- Experience working with ISSOs for system compliance.
- DoD 8570 compliance with Information Assurance Technical (IAT) Level I is required.
- Experience developing and updating technical documentation.
- Must be able to work core hours of 10AM-2PM Monday-Friday. Exceptions will be considered on a case-by-case basis.
Desired Qualifications:
- Familiarity with cloud platforms such as AWS
- Experience with infrastructure automation, configuration management, or Infrastructure as Code (IaC) tools such as Ansible, Terraform, or AWS CloudFormation.
- Experience supporting DevOps practices, CI/CD pipelines, or automated deployment processes.
- Familiarity with containerization technologies such as Docker or Kubernetes.
- Experience performing vulnerability remediation, security patching, and STIG implementation.
- Experience supporting Authority to Operate (ATO) processes, RMF activities, and security compliance initiatives.
Ready to make an impact? Apply today and join our mission-focused team. This position is eligible for a $25,000 Welcome Bonus for qualified candidates. Bonus eligibility and payment terms apply.
The estimated salary range for this position is between $190,000-$240,000 (annualized USD). This range reflects the typical pay for the role and is one part of the company's comprehensive compensation package. Actual salaries are influenced by several factors, such as location, the individual’s education, skills, experience, and competencies, as well as contract affordability and organizational needs.
What’s in It for You?
- Flexible work environment
- A team mentality – work with friendly, like-minded professionals
- Work with innovative, cutting edge technologies
Enjoy Extremely Competitive Compensation And Benefits
- A work-life balance you can count on
- Opportunities to grow and advance your career on our dime
The Benefits You Get with Freedom
- Amazing benefits including matching 401k, fully paid medical, and more
- Generous paid time off – including paid site closure days
- Competitive salary offerings
- Paid training and tuition reimbursement
- Referral bonuses
- Fully paid life and disability
- Annual logo wear allowance
- Company sponsored events (game nights, holiday party, summer party, happy hours)
Interested in learning more about Freedom and our culture? Contact us today! We’re constantly hosting hiring events in our office and elsewhere, to help you get a sense of what life is like at Freedom before joining the team.
As an Equal Opportunity Employer, we do not discriminate on the basis of race, color, religion, sex, age, marital status, disability or veteran status.
Applicant Federal & E-Verify Postings VEVRAA Federal Contractor
Accessibility: If you need an accommodation as part of the employment process, please contact Human Resources at
Phone: 410-290-9035
Email: recruiting@goftsg.com
Equal Opportunity Employer, including disabled and veterans.
If you want to view the EEO Law poster, please choose your language: English - Spanish - Arabic - Chinese
If you want to view the EEO Law Supplement poster, please choose your language: English - Spanish - Chinese
If you want to view the Pay Transparency Policy Statement, please click the link: English
INTRODUCTION
Join a team that powers the business enterprise behind the mission. Freedom supports the sustainment, modernization, and transformation of more than 100 enterprise business systems that enable tens of thousands of government personnel, industry partners, and prospective employees worldwide. Our teams develop, modernize, secure, and operate the applications and services that support workforce management, training, financial operations, acquisitions, security processing, and executive decision-making across multiple secure environments. As part of this program, you will work alongside experts in software engineering, cloud computing, DevSecOps, systems engineering, and enterprise platforms to modernize legacy systems, automate business processes, and deliver innovative solutions that improve efficiency, reduce costs, and enhance the user experience. The work you perform will help ensure the organization has the technology, information, and capabilities needed to support its workforce and accomplish its mission.
Join Our Mission-Focused Team — This Position Is Eligible for a $25,000 Welcome Bonus for Qualified Candidates!
We are seeking a Senior System Administrator for one of our PRIME CONTRACTS supporting mission-critical enterprise applications and services across the Government Corporate Management Services (CMS) portfolio. Our mission supports the Government Corporate Management Services (CMS) by providing full life cycle support services through the sustainment, modernization, and transformation of enterprise corporate applications. As soon as an employee enters a customer facility, they touch one of these applications, which are critical to the daily functions of thousands of users across acquisition, business, finance, HR, training, recruitment, program management, security, logistics, and more. Come join our diverse and growing team with lots of opportunities!
Primary Responsibilities:
- Work on a fast-paced team providing support for the implementation, troubleshooting, and maintenance of Information Technology (IT) systems supporting critical enterprise applications.
- Provide senior-level technical leadership in the administration, operation, troubleshooting, and maintenance of enterprise IT systems and infrastructure. Serve as a leader and mentor for the system administration team, providing direction, guidance, and oversight while maintaining a strong hands-on role in day-to-day operations and complex technical problem resolution.
- Manage IT system infrastructure and associated processes, ensuring the availability, reliability, security, and performance of enterprise applications and services.
- Provide day-to-day operations, monitoring, maintenance, and problem resolution for client systems, servers, storage platforms, network devices, and related infrastructure.
- Provide Tier 1 (Help Desk) and Tier 2 (Escalation) support, including problem identification, diagnosis, troubleshooting, and resolution. Serve as a senior escalation point for complex technical issues and provide technical direction and guidance to other system administrators.
- Support the escalation process and communicate system status, issues, and resolutions to agency management and internal stakeholders.
- Assist with hardware support activities, dispatch processes, and issue resolution through completion.
- Configure, administer, and maintain Windows and UNIX/Linux operating systems, including software installation, patching, system hardening, and performance tuning.
- Maintain the integrity and availability of infrastructure components while implementing enhancements to improve reliability, scalability, and operational efficiency.
- Collaborate with engineering and development teams to support infrastructure modernization efforts, including evaluating, testing, and implementing technology solutions that enhance system capabilities.
- Participate in the assessment of existing systems and architectures, providing operational and technical input for initiatives involving automation, DevOps practices, cloud technologies, and application modernization.
- Manage the planning, testing, deployment, and sustainment of infrastructure and application changes across on-premises, hybrid and cloud-hosted environments, as applicable.
- Analyze operational, security, compliance, and technical considerations associated with infrastructure changes and technology migrations.
- Develop and maintain technical documentation, standard operating procedures, and system configuration baselines.
- Serve as a technical resource, helping to promote knowledge sharing, consistency, and continuous improvement across the team.
Technology Stack:
- AWS
- Ansible
- Docker
- BigFix
- ElasticSearch
- Terraform
- Jenkins
- Linux
- Windows
- GitLab
Required Qualifications:
- TS/SCI with Polygraph
- A bachelor’s degree and fifteen (15) years of experience as a system administrator on programs of similar scope and complexity is required. In lieu of a bachelor’s degree twenty (20) years of experience required.
- In depth Linux experience.
- Familiarity with PowerShell and Bash scripting languages.
- Experience with system hardening.
- Experience working with ISSOs for system compliance.
- DoD 8570 compliance with Information Assurance Technical (IAT) Level I is required.
- Experience developing and updating technical documentation.
- Must be able to work core hours of 10AM-2PM Monday-Friday. Exceptions will be considered on a case-by-case basis.
Desired Qualifications:
- Familiarity with cloud platforms such as AWS
- Experience with infrastructure automation, configuration management, or Infrastructure as Code (IaC) tools such as Ansible, Terraform, or AWS CloudFormation.
- Experience supporting DevOps practices, CI/CD pipelines, or automated deployment processes.
- Familiarity with containerization technologies such as Docker or Kubernetes.
- Experience performing vulnerability remediation, security patching, and STIG implementation.
- Experience supporting Authority to Operate (ATO) processes, RMF activities, and security compliance initiatives.
Ready to make an impact? Apply today and join our mission-focused team. This position is eligible for a $25,000 Welcome Bonus for qualified candidates. Bonus eligibility and payment terms apply.
The estimated salary range for this position is between $190,000-$240,000 (annualized USD). This range reflects the typical pay for the role and is one part of the company's comprehensive compensation package. Actual salaries are influenced by several factors, such as location, the individual’s education, skills, experience, and competencies, as well as contract affordability and organizational needs.
What’s in It for You?
- Flexible work environment
- A team mentality – work with friendly, like-minded professionals
- Work with innovative, cutting edge technologies
Enjoy Extremely Competitive Compensation And Benefits
- A work-life balance you can count on
- Opportunities to grow and advance your career on our dime
The Benefits You Get with Freedom
- Amazing benefits including matching 401k, fully paid medical, and more
- Generous paid time off – including paid site closure days
- Competitive salary offerings
- Paid training and tuition reimbursement
- Referral bonuses
- Fully paid life and disability
- Annual logo wear allowance
- Company sponsored events (game nights, holiday party, summer party, happy hours)
Interested in learning more about Freedom and our culture? Contact us today! We’re constantly hosting hiring events in our office and elsewhere, to help you get a sense of what life is like at Freedom before joining the team.
As an Equal Opportunity Employer, we do not discriminate on the basis of race, color, religion, sex, age, marital status, disability or veteran status.
Applicant Federal & E-Verify Postings VEVRAA Federal Contractor
Accessibility: If you need an accommodation as part of the employment process, please contact Human Resources at
Phone: 410-290-9035
Email: recruiting@goftsg.com
Equal Opportunity Employer, including disabled and veterans.
If you want to view the EEO Law poster, please choose your language: English - Spanish - Arabic - Chinese
If you want to view the EEO Law Supplement poster, please choose your language: English - Spanish - Chinese
If you want to view the Pay Transparency Policy Statement, please click the link: English
See All 8 Senior Level System Administrator Jobs
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Find JobsSenior Level System Administrator Job Market
Who's Hiring
Top Industries Hiring
- Technology & Software
- Consulting & Professional Services
- Automotive
- Accounting & Auditing
- Electronics & Hardware
Senior Level System Administrator Jobs: Frequently Asked Questions
How do I get a senior level system administrator job?
Focus on demonstrating ownership rather than task execution. Employers at this level want candidates who have architected solutions, led migrations or upgrades end to end, and mentored junior staff. Highlight cross-team projects where your decisions shaped outcomes, certifications like RHCE, MCSE, or AWS SysOps, and experience with large-scale or highly available environments. A portfolio of infrastructure improvements you initiated carries significant weight.
Which companies hire senior level system administrators?
Companies hiring senior level system administrators right now include Axway, Amentum, and Related, based on current listings on Migrate Mate as of November 2026. Hiring at this level tends to come from large enterprises, government contractors, healthcare systems, and technology firms that rely on complex, always-on infrastructure and need experienced professionals to own it.
Are there remote senior level system administrator jobs?
Yes, though availability varies by employer and infrastructure requirements. About 20% of senior level system administrator openings are remote or hybrid as of November 2026, reflecting demand from organizations comfortable with distributed IT leadership. Roles tied to on-premises hardware or regulated environments often require at least partial on-site presence, while cloud-heavy environments offer more flexibility.
What makes a system administrator role senior level?
Senior level system administrator roles are defined by scope, accountability, and leadership. These positions own infrastructure decisions rather than implementing someone else's plan, drive architecture improvements, set standards across teams, and are responsible for uptime and security at an organizational level. Mentoring junior and mid-level administrators and collaborating directly with engineering and security leadership are also core expectations at this stage.
Which industries hire the most senior level system administrators?
Senior Level system administrator roles concentrate in Technology & Software, Consulting & Professional Services, and Automotive, based on current listings on Migrate Mate as of November 2026. These sectors tend to operate large, regulated, or mission-critical environments where experienced system ownership, compliance requirements, and infrastructure scale demand professionals who can lead rather than just maintain.