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Senior Systems Administrator III (TS/SCI w/ CI Poly required)

A&M Technologies, Inc.

Suitland-Silver Hill, Maryland • Today

Full-time

Senior Systems Administrator

Accenture LLP

Washington, District of Columbia • Today

Full-time

USD 78,600.00 - 160,200.00 per year

Senior Systems Administrator

Bridge Core (BCore)

Gaithersburg, Maryland • Today

Full-time

USD 110,000.00 - 166,000.00 per year

Senior Systems Administrator

TechFlow, Inc.

Arlington, Virginia • Today

Full-time

USD 75,000.00 - 85,000.00 per year

Senior Systems Administrator (Lead)

NCI Information Systems, Inc.

Arlington, Virginia • Today

Full-time

USD 147,000.00 per year

Senior Systems Administrator

Leidos

Alexandria, Virginia • Today

Full-time

USD 116,350.00 - 210,325.00 per year

Senior Systems Administrator

Shure Incorporated

Remote or Niles, Illinois • Today

Full-time

USD 99,000.00 - 158,400.00 per year

Systems Administrator Senior

Castalia Systems

Washington, District of Columbia • Today

Full-time

USD 190,000.00 - 200,000.00 per year

Senior Systems Administrator [Full Scope Polygraph]

Modern Technology Solutions

Annapolis, Maryland • Today

Full-time

USD 125,000.00 - 180,000.00 per year

Senior System Administrator

SI-Tec Consulting LLC

Annapolis, Maryland • Today

Full-time

USD 175,000.00 - 215,000.00 per year

Senior System Administrator

Assured Information Security, Inc

Fort Meade, Maryland • Today

Full-time

USD 150,000.00 - 175,000.00 per year

Senior System Administrator

Booz Allen Hamilton

Washington, District of Columbia • Today

Full-time

USD 77,600.00 - 176,000.00 per year

Senior System Administrator

Booz Allen Hamilton

Columbia, Maryland • Today

Full-time

USD 77,600.00 - 176,000.00 per year

Senior System Administrator

Booz Allen Hamilton

Laurel, Maryland • Today

Full-time

USD 77,600.00 - 176,000.00 per year

System Administrator Senior

ASM Research

Arlington, Virginia • Today

Full-time

Sr. System Administrator

Alakaina Foundation Family of Companies

Fort Meade, Maryland • Today

Full-time

System Administrator Senior Staff

Lockheed Martin Corporation

Maryland • 8d ago

Full-time

USD 117,200.00 - 206,770.00 per year

System Administrator, Senior

Parsons Services Company

Linthicum Heights, Maryland • Today

Full-time

USD 148,300.00 - 266,900.00 per year

Senior Systems Administrator

Contact Government Services, LLC

Rockville, Maryland • Today

Full-time

USD 101,920.00 - 131,040.00 per year

Senior Systems Administrator

Contact Government Services, LLC

Arlington, Virginia • Today

Full-time

USD 101,920.00 - 131,040.00 per year

Senior System Administrator

Booz Allen Hamilton

Laurel, Maryland • Today

Full-time

USD 77,600.00 - 176,000.00 per year

Senior Systems Administrator with Poly

BigBear.ai

Maryland • Today

Full-time

Job Details

Skills

Continuous Integration
High Availability
IT Management
Mentorship
Lifecycle Management
Virtual Machines
Hardening
Authentication
Replication
Root Cause Analysis
Enterprise Software
Documentation
Emerging Technologies
Customer Care and Billing
Migration
Help Desk
Information Technology
Computer Science
System Administration
Security Clearance
Security+
Customer Engagement
Microsoft Operating Systems
Microsoft Windows Server
Red Hat Enterprise Linux
VMware Infrastructure
Enterprise Storage
Backup
Patch Management
Active Directory
Group Policy
DNS
Dragon NaturallySpeaking
DHCP
Technical Writing
Microsoft Windows
Linux
Virtualization
VMware Certified Professional
VCP
Red Hat Linux
RHCSA
Red Hat Certified Engineer
Cisco
VMware
Cloud Computing
NetApp
Citrix
SolarWinds
Microsoft SQL Server
Microsoft Exchange
Virtual Desktop
VDI
STIG
Regulatory Compliance
DoD
Windows PowerShell
Bash
Python
Ansible
Geographic Information System
Disaster Recovery
Business Development
Insurance
Life Insurance
Taxes
NEC
Apache Flex

Continuous Integration
High Availability
IT Management
Mentorship
Lifecycle Management
Virtual Machines
Hardening
Authentication
Replication
Root Cause Analysis
Enterprise Software
Documentation
Emerging Technologies
Customer Care and Billing
Migration
Help Desk
Information Technology
Computer Science
System Administration
Security Clearance
Security+
Customer Engagement
Microsoft Operating Systems
Microsoft Windows Server
Red Hat Enterprise Linux
VMware Infrastructure
Enterprise Storage
Backup
Patch Management
Active Directory
Group Policy
DNS
Dragon NaturallySpeaking
DHCP
Technical Writing
Microsoft Windows
Linux
Virtualization
VMware Certified Professional
VCP
Red Hat Linux
RHCSA
Red Hat Certified Engineer
Cisco
VMware
Cloud Computing
NetApp
Citrix
SolarWinds
Microsoft SQL Server
Microsoft Exchange
Virtual Desktop
VDI
STIG
Regulatory Compliance
DoD
Windows PowerShell
Bash
Python
Ansible
Geographic Information System
Disaster Recovery
Business Development
Insurance
Life Insurance
Taxes
NEC
Apache Flex

Summary

Systems Administrator III (Senior)

Location: Suitland, MD (On-Site)
Clearance: Active Top Secret/SCI w/ CI Poly (Required)
Certification: DoD 8140/8570 Compliant (Security+ CE or qualifying certification required)
Employment Type: Full-Time
Position Summary

A&M Technologies is seeking an experienced Systems Administrator III to support a federal Operations & Maintenance (O&M) program. This individual will serve as a senior member of the infrastructure team responsible for maintaining mission-critical enterprise systems supporting a high-availability government environment.

The ideal candidate will possess extensive experience administering Windows and Linux environments, virtualization platforms, enterprise storage, disaster recovery, system hardening, patch management, and troubleshooting complex infrastructure issues. The candidate will also provide technical leadership, mentor junior administrators, and support modernization initiatives.
Primary Responsibilities

Administer, maintain, and troubleshoot enterprise Windows and Red Hat Enterprise Linux (RHEL) server environments.
Perform installation, configuration, maintenance, hardening, and lifecycle management of enterprise infrastructure.
Support VMware virtualization environments including VMware Cloud Foundation (VCF), virtual machines, clusters, and virtual desktop infrastructure (VDI).
Support Cisco HyperFlex infrastructure and enterprise storage platforms including NetApp.
Perform server patching, vulnerability remediation, and system hardening in accordance with DoD security requirements.
Maintain Active Directory, Group Policy, DNS, DHCP, certificate services, and authentication services.
Support enterprise backup, replication, disaster recovery (DR), and Continuity of Operations (COOP) planning.
Perform root cause analysis for production incidents and provide advanced troubleshooting support.
Maintain Citrix infrastructure and other enterprise application platforms.
Support enterprise monitoring solutions including SolarWinds.
Produce and maintain technical documentation including:
- SOPs
- Runbooks
- As-built documentation
- System diagrams
- Capacity plans
- Disaster Recovery documentation
Evaluate emerging technologies and develop proof-of-concepts for government review.
Participate in Configuration Control Board (CCB) activities.
Coordinate infrastructure upgrades, migrations, and modernization efforts.
Support Help Desk escalations and participate in an on-call rotation.
Provide after-hours support for Priority 1 outages with a required 2-hour response.

Required Qualifications

Bachelor's degree in Information Technology, Computer Science, Engineering, or related field (or equivalent experience).
8+ years of Systems Administration experience.
Active Top Secret Clearance.
DoD 8140/8570 compliant certification (Security+ CE or equivalent).
Strong experience administering:
- Windows Server 2016/2019/2022
- Red Hat Enterprise Linux (RHEL)
Experience supporting VMware infrastructure.
Experience supporting enterprise storage solutions.
Experience with enterprise backup and disaster recovery.
Experience performing patch management and vulnerability remediation.
Experience with Active Directory, Group Policy, DNS, and DHCP.
Experience creating technical documentation.
Strong troubleshooting skills across Windows, Linux, virtualization, and enterprise infrastructure.
Ability to support on-call operations and after-hours maintenance.

Desired Qualifications

VMware Certified Professional (VCP)
Red Hat Certified System Administrator (RHCSA) or RHCE
Experience with:
- Cisco HyperFlex
- VMware Cloud Foundation (VCF)
- NetApp Storage
- Citrix
- SolarWinds
- SQL Server
- Microsoft Exchange
- Virtual Desktop Infrastructure (VDI)
Experience supporting Cross Domain Solutions (CDS)
Experience supporting Multiple Independent Levels of Security (MILS)
Experience with STIG implementation and compliance.
Experience supporting DoD or Intelligence Community environments.
Knowledge of SECNAV M-5239.2.
Experience with automation using PowerShell, Bash, Python, or Ansible.
Experience supporting enterprise GIS environments.
Experience participating in disaster recovery exercises.

Pay & Benefits HighlightsCompensation

Competitive salary and benefits package.
Employee referral bonuses of up to $10,000 for eligible hires.
Additional bonus opportunities for exceptional performance and contributions to business development and company growth.

Health & Wellness

Comprehensive medical, dental, and vision coverage for employees and eligible dependents.
Deductible reimbursement of up to $1,000 for employee-only coverage and up to $2,000 for family coverage upon meeting plan deductibles.

Income Protection

100% company-paid short-term disability insurance.
100% company-paid long-term disability insurance.
100% company-paid accidental death and dismemberment (AD&D) insurance.
Company-paid life insurance coverage up to $150,000.

Retirement

401(k) plan with immediate vesting upon eligibility. Employees become eligible after six months of service.
Pre-tax and Roth contribution options available.
Company Match: A&M provides a dollar-for-dollar match on employee contributions up to 6% of eligible compensation.
Non-Elective Contribution (NEC): A&M provides an additional 6% company contribution to all eligible participants, regardless of employee contributions.

Paid Time Off

Up to 18 days of flexible paid time off (PTO).
Additional PTO awarded based on years of service: +2 days after 3 years, +4 days after 6 years, and +7 days after 10 years.
10 paid holidays annually, including up to four floating holidays.

Work-Life Balance

Flexible work schedules, including flex time and compressed work schedules, based on contract and project requirements.

Employers have access to artificial intelligence language tools (“AI”) that help generate and enhance job descriptions and AI may have been used to create this description. The position description has been reviewed for accuracy and Dice believes it to correctly reflect the job opportunity.

Dice Id: 91128621
Position Id: 8a78ea8bb2c57ac43e2db97167e3b26b
Posted 15 days ago

Fitment

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Suitland-Silver Hill, Maryland

•

Today

Systems Administrator II (Mid-Level) - 3 SLOTS Location: Suitland, MD (On-Site) Clearance: Active Top Secret Clearance (SCI eligibility preferred) Certification: DoD 8140/8570 Compliant (Security+ CE or qualifying certification required) Employment Type: Full-Time Position Summary A&M Technologies is seeking three Systems Administrator II professionals to support enterprise Operations & Maintenance activities for a federal customer. The selected candidates will provide day-to-day administratio

Full-time

Sr. Senior System Administrator III (6687)

Washington, District of Columbia

•

Today

As a Sr. Systems Administrator , you will work as part of a collaborative and high-performing team providing hands-on expertise to deliver technical solutions within the highest levels of the federal government by designing, implementing, administering, and supporting complex geographically dispersed infrastructure; managing Windows Server 2019 and 2022 environments; supporting Active Directory, Group Policy, Public Key Infrastructure, certificate services, clustered services, Internet Informati

Full-time

USD 170,000.00 - 219,000.00 per year

Senior Systems Administrator

Arlington, Virginia

•

Today

TechFlow Inc. is an employee-owned company delivering mission-critical technology, engineering, and mission support services to federal government customers. We are seeking a Senior Systems Administrator to play a key role in a critical DOD program - powering the platform that securely collects, analyzes, reports, and exchanges data from Transportation Security Equipment. In this role, you will be responsible for the administration, maintenance, monitoring, and optimization of enterprise IT infr

Full-time

USD 75,000.00 - 85,000.00 per year

Systems Administrator II - Desktop Support

Springfield, Virginia

•

Today

Job ID: 2614942 Location: Springfield, VA, US Date Posted: 2026-07-24 Category: Information Technology Subcategory: Sys Administrator Schedule: Full-Time Shift: Day Job Travel: Yes - 10% of the time Minimum Clearance Required: TS.SCI Clearance Level Must Be Able to Obtain: TS/SCI with Poly Potential for Remote Work: ORA_ON_SITE Description SAIC is seeking a highly motivated and skilled Senior Systems Administrator II - Desktop Support to join our MAJESTIC Joint Program Office (JPO) Tea

Full-time

USD 80,001.00 - 120,000.00 per year