53 linux systems administrator jobs at 24 companies in Elsmere, DE

PromotedHiringCafe
Founding Backend / Infra Engineer
Cupertino, CA, US
$160k-$300k/yr On-SiteFull Time
HiringCafe
HiringCafe: Building a 100× better job search engine to take on Indeed and LinkedIn.
Own the crawlers, pipelines, and infrastructure powering a real-time job search engine. Strong Node.js and Python fundamentals; bonus points for security and reverse-engineering chops.
Node.js, Python, Elasticsearch, Redis
1d
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Linux Administrator
Aberdeen Proving Ground, Maryland, United States
OnsiteFull Time
BAE Systems
BAE SystemsLondon Stock Exchange: BA: Provides advanced defense, aerospace, and security technology solutions.
5+ YOEBachelor's or equivalent experience, 5+ years Linux/system administration experience, DoD 8570 certification (Security+), OS certification (Linux+/RedHat), ability to obtain Top Secret clearance, scripting and automation experience.
Ansible, Puppet, Python, Apache, Zabbix, Red Hat Satellite, Red Hat Identity Manager, BIND, OpenID, LDAP, Kerberos
1mo
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Systems Administrator
Philadelphia, Pennsylvania, United States
OnsiteFull Time
EHS Technologies
EHS Technologies: Provides engineering, IT, and environmental services to defense agencies.
3+ YOE3+ years systems administration experience managing Linux and Windows environments; current Secret clearance; IAT-1 or IAT-2 (e.g., CompTIA Sec+, CySA+, CCNA); experience with on-premises and cloud infrastructure, scripting, troubleshooting, and documentation.
Linux, Windows, NAVLOG
1mo
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Linux Information Systems Analyst, Sr / Secret / King of Prussia, PA
King of Prussia, Pennsylvania, United States
OnsiteFull Time
Lockheed Martin
Lockheed MartinNYSE: LMT: Designs and manufactures global security and aerospace systems.
Active Secret clearance and US citizenship required; Linux/UNIX administration, scripting (Perl, Bash, PowerShell), RMF/STIG, vulnerability remediation and system hardening, familiarity with listed security/management tools, ability to obtain Security+ within 60 days.
Perl, Bash, PowerShell, Risk Management Framework (RMF), Security Technical Implementation Guide (STIG), Yum, Nessus, CrowdStrike, WSUS, SCCM, Ivanti, Shavlik, Blade Logic, Splunk, ACAS, SCAP, HBSS, NetApp, SQL, VMware, HyperV, Active Directory (AD), National Industrial Security Program Operating Manual (NISPOM)
1mo
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Senior HPC Systems Administrator, SAS Computing
Philadelphia, Pennsylvania, United States
$85k-$105k/yr HybridFull Time
University of Pennsylvania
University of Pennsylvania: Research university offering higher education and healthcare services.
3+ YOEBachelor of Science and 3+ years experience; expert Linux and HPC skills, BASH/Python scripting, SLURM, Infiniband/TCP networking, storage and backup management, Salt/Ansible/MAAS, git, and experience with CPU/GPU nodes.
GPU, CPU, SLURM, conda, Infiniband, Linux, BASH, Python, Salt, Ansible, MAAS, git, AWS, Ubuntu, TCP
2mo
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Lead, IT Systems Administration (37395)
Camden, New Jersey, United States
$111k-$205k/yr OnsiteFull Time
L3Harris Technologies
L3Harris TechnologiesNYSE: LHX: Aerospace and defense providing mission-critical technology solutions.
5+ YOEActive TS/SCI clearance, 5+ years systems or network administration, Windows/Linux and Active Directory expertise, virtualization, Security+ or equivalent, scripting in PowerShell/Bash/Python, bachelor’s degree or equivalent experience.
Active Directory, PowerShell, Bash, Python
1w
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System Administrator
Aberdeen Proving Ground, Maryland, United States
$78k-$176k/yr OnsiteFull Time
Booz Allen Hamilton
Booz Allen HamiltonNYSE: BAH: Consulting and technology services for government and commercial clients
5+ YOE5+ years systems administration (Windows/Linux), Windows Server and Linux experience, network and virtual server experience, desktop support, inventory and configuration management, Top Secret clearance required.
Windows Server, Linux, Redhat, Ubuntu, VMWare, Hyper-V, Kubernetes, SCAP, STIGs
1w
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System Administrator
Aberdeen Proving Ground, Maryland, United States
$78k-$176k/yr OnsiteFull Time
Booz Allen Hamilton
Booz Allen HamiltonNYSE: BAH: Provides technology and management consulting services to diverse organizations.
5+ YOE5+ years Windows and Linux systems administration; Red Hat/Ubuntu; 3+ years network administration; 1+ year virtualization (VMWare/Hyper-V/Kubernetes); desktop support; inventory and patch management; DoD 8140; Top Secret clearance; HS diploma or GED.
Windows Server, Linux, Redhat, Ubuntu, VMWare, Hyper-V, Kubernetes, SCAP, STIGs
3mo
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System Administrator
Philadelphia, Pennsylvania, United States
$65k-$102k/yr OnsiteFull Time
Noblis
Noblis: Provides science and technology solutions for government missions.
6+ YOEBachelor's in IT/CS or related field or 6+ years of relevant experience; US Citizenship with active DoD Secret clearance or ability to obtain one; strong cybersecurity emphasis and system hardening; Windows and Linux administration; security technologies; VMware/Hyper-V; AD/LDAP knowledge; certifications such as Security+ or CISSP.
Windows Server, Linux, VMware vSphere, Microsoft Hyper-V, Firewalls, IDS/IPS, Endpoint Protection, Active Directory, LDAP, Group Policy
1mo
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Network Administrator
Mount Laurel, New Jersey, United States
$95k-$115k/yr HybridFull Time
PEAC Solutions
PEAC Solutions: Provides equipment financing and capital solutions for businesses.
3+ YOE3+ years systems or network administration experience; hands-on with Windows Server, Linux, Active Directory, Microsoft 365, networking (TCP/IP, DNS, DHCP, VPN), virtualization; Azure/AWS knowledge and vendor certifications preferred.
Windows Server, Linux, Active Directory, Microsoft 365, Azure, AWS, TCP/IP, DNS, DHCP, VPN
1d
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System Administrator - GAINS
Aberdeen, Maryland, United States
$90k-$98k/yr OnsiteFull Time
Techximius: Provides specialized IT and engineering services for defense missions.
3+ YOEAdminister, secure, and optimize enterprise Linux systems; support C4ISR/C5ISR services; perform patching, backups, vulnerability assessments; 3+ years Linux system admin experience and DoW Secret clearance.
CentOS, Kubernetes, Symantec Ghost, MECM, VMware vCenter, SAN
1mo
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Database Administrator
Wayne, Pennsylvania, United States
HybridFull Time
Affiliated Distributors
Affiliated Distributors: Buying and marketing group for independent wholesale distributors.
3+ YOE3+ years Oracle experience, Bachelor's in CS/Information Systems or equivalent, 3+ years with data platforms, strong SQL, Snowflake and AWS (S3, Lambda, Glue, Redshift) experience, Drupal familiarity, Windows/Linux experience.
Lawson, Oracle, Snowflake, AWS, S3, Lambda, Glue, Redshift, Drupal (Acquia), SQL, Microsoft SQL Server, MySQL, Qlik, Microsoft Power BI, Tableau, Windows, Linux
3w
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Senior Systems Engineer
Natick or Providence or Tysons or West Hartford or Disney Springs or King of Prussia or Paramus or Raleigh or Boston
$110k-$140k/yr HybridFull Time
Level99
Level99: Adult social gaming venue with physical challenges and dining.
Experienced infrastructure engineer with networking, security, hardware deployment, server and OS administration (Windows, MacOS, Linux/Ubuntu, Android), virtualization, SD-WAN, MDM, EDR, ability to travel, and on-call availability.
EDR, MDM, Microsoft Windows, MacOS, Android, Ubuntu, Linux, SD-WAN, WiFi, virtualization
1w
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Atlassian Administrator
Reading or Tampa
OnsiteFull Time
Penske Truck Leasing: Provides commercial truck leasing, rental, and vehicle maintenance services.
1+ YOEAssociate's degree or 1 year admin experience, 1+ year system engineering/IT support, hands-on Atlassian suite experience, Jira administration, JQL/REST/Groovy, SDLC/agile knowledge, troubleshooting and security awareness.
Jira, Confluence, JQL, REST, Groovy, Oracle, Linux
1mo
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Master Data Management Administrator
Wilmington, Delaware, United States
$107k-$178k/yr HybridFull Time
M&T Bank
M&T BankNYSE: MTB: Provides retail, commercial, and wealth management banking services.
6+ YOEProvide administration for Informatica IDMC and on-prem MDM, Azure and Linux support, IaC (Terraform/Ansible), Git, 6 years combined education/work experience in systems design or architecture; bachelor's preferred.
Informatica IDMC, Informatica MDM, IDMC Secure Agent, Azure, Azure VM, Azure Kubernetes Service, Blob Storage, Private DNS, Private Endpoints, Private Link, Terraform, Ansible, Git, Linux
1w
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DevOps Support Engineer - Linux
Bala Cynwyd, Pennsylvania, United States
OnsiteContract
Susquehanna International Group
Susquehanna International Group: Global quantitative trading firm providing proprietary financial market liquidity.
Experience in application support/operations/DevOps or systems administration; scripting (Bash, Python); Unix/Linux command line; troubleshooting during outages; ability to integrate AI tools; BS in a technical discipline preferred.
Bash, Python, Unix, Linux
1w
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Windows System Administrator - JobID-0249
Mount Laurel, New Jersey, United States
$90k-$184k/yr OnsiteFull Time
Innovative Defense Technologies
Innovative Defense Technologies: A defense-focused technology delivering automated software, data analysis, and cybersecurity solutions for mission-critical systems.
3+ YOEActive Secret clearance, 3+ years systems administration, Windows/Linux/VMware expertise, Security+ CE (or equivalent IAT/IAM), Bachelor’s or equivalent, scripting and STIG/SCAP/ACAS/Nessus experience.
Windows 11, Server 2022, Server 2025, ESXi, VMware vSphere, vCenter Server, Red Hat, PowerShell, Bash, Python, PowerCLI, Ansible Playbook, PDQ Deploy, ACAS, Nessus, STIG, SCAP
1mo
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INFRASTRUCTURE & HPC SYSTEMS ENGINEER
Philadelphia, Pennsylvania, United States
OnsiteFull Time
Federal Reserve System
Federal Reserve System: The central bank of the United States.
5+ YOEBachelor's in CS/engineering/math or equivalent and 5+ years HPC administration/systems engineering experience. Expertise with Linux/Windows, HPC clusters, Slurm, scripting (Python, Bash), containers (Docker), storage (Ceph/GPFS/Lustre/BeeGFS), and automation (Terraform).
Windows, Linux, Red Hat, CentOS, Slurm, Docker, Python, Bash, Ceph, GPFS, Lustre, BeeGFS, MPI, OpenMP, Terraform
2w
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Systems Engineer III** Hybrid in Horsham, PA
Horsham or Philadelphia or New Jersey
$72k-$119k/yr HybridFull Time
LexisNexis
LexisNexisNYSE: RELX: Provides legal research and business analytics software solutions.
6+ YOEUS citizen required with Public Trust clearance; 6+ years systems engineering experience; Windows and Linux administration; Active Directory, DNS, DHCP, virtualization, storage, backup, cloud (Azure/AWS); PowerShell and automation experience.
Windows Server 2016–2025, Microsoft Azure, Hyper-V, Microsoft Entra ID, Microsoft Intune, Azure Monitor, Datadog, PowerShell, Bash, Python, Ansible, Terraform, Qualys, Tanium, Microsoft Defender
2w
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Systems Engineer III** Hybrid in Horsham, PA
Horsham or Philadelphia or New Jersey
$72k-$119k/yr HybridFull Time
RELX
RELXLondon Stock Exchange: REL: Provides professional data analytics, scientific publishing, and trade exhibitions.
6+ YOEUS citizen eligible for Public Trust clearance, Bachelor's or equivalent,6+ years systems engineering experience, Windows/Linux administration, Azure/AWS, virtualization, storage/backups, automation with PowerShell/Ansible/Terraform, monitoring and security tooling.
Windows Server, Microsoft Azure, Hyper-V, Microsoft Entra ID, Microsoft Intune, Azure Monitor, Datadog, PowerShell, Bash, Python, Ansible, Terraform, Qualys, Tanium, Microsoft Defender
1mo
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Network Systems Engineer- Mt Laurel NJ Area
Mount Laurel, New Jersey, United States
$120k-$165k/yr OnsiteFull Time
Blue Mantis
Blue Mantis: Provides managed IT, cybersecurity, and cloud infrastructure services.
Experience supporting multisite enterprise networks, server administration (Windows/Linux/Unix), cloud platforms (AWS, Azure, Microsoft Office 365), VMware, Cisco/Arista/Meraki networking, monitoring (SolarWinds, Datadog), backup/DR (Rubrik, Zerto), and incident management; CCNA/CCNP/ITIL preferred; Bachelor's or equivalent experience.
Cisco Nexus, Arista, Meraki, Cisco Wireless Controllers, Windows, Linux, Unix, ServiceNow, AWS, Azure, Microsoft Office 365, VMware, SolarWinds, Datadog, Infoblox, Rubrik, Zerto, Palo Alto, Python, PowerShell, Bash, Kubernetes, Docker, SIEM, CDN

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