49 senior it systems engineer jobs at 29 companies in Rosslyn, VA

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Senior IT Systems Engineer - JobID-0239
Arlington, Virginia, United States
$135k-$273k/yr OnsiteFull Time
Innovative Defense Technologies
Innovative Defense Technologies: Private defense technology developing automated software and systems-integration solutions for the U.S. Department of Defense.
7+ YOE2+ MgmtActive Secret clearance required, 7+ years relevant experience with 2+ years leading technical teams. Experience with VMware/Red Hat/Windows, Bash/C/Python scripting, networking (TCP/IP, VLAN, DHCP), DISA STIGs, patching in air-gapped networks, and hardware provisioning. Ability to travel up to 25%.
Red Hat, Microsoft Windows, VMWare, VMWare NSX-T, Bash, C, Python, Ansible, PowerShell, Chef, Salt, Puppet, Cisco, Ruckus, DISA STIG, TCP, UDP, VLAN, DHCP
2w
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IT Systems Engineer
Arlington, Virginia, United States
$90k-$150k/yr OnsiteFull Time
Absolute Business Solutions Corp
Absolute Business Solutions Corp: Delivering Technology Enabled Solutions to Continuously Advance Intelligence
5+ YOEBachelor's degree and 5 years of relevant experience, master's degree and 3 years, or 10 years without a degree. Requires active Secret clearance, systems engineering expertise, and English proficiency.
Windows, Linux, VMware, Active Directory, Infrastructure as a Service (IaaS), Platform as a Service (PaaS), Software as a Service (SaaS), NIPRNet, SIPRNet
1d
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IT Systems Engineer
Fort Belvoir, Virginia, United States
$115k-$125k/yr OnsiteFull Time
Cherokee Federal
Cherokee Federal: Federal contracting and mission-ready solutions provider.
6+ YOEActive TS/SCI clearance, six years of project, systems, or software engineering experience, MS Office proficiency, strong analytical and communication skills, and a technology-related bachelor's degree preferred.
Microsoft Office, Microsoft Word, Microsoft Excel, Microsoft PowerPoint, User Activity Monitoring (UAM), Incident Assessment Reports (IARs)
1w
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Systems Engineer
Springfield, Virginia, United States
$112k-$179k/yr OnsiteFull Time
Peraton
Peraton: Provider of mission-critical national security technologies and services.
6+ YOEBachelor’s degree in systems engineering or related STEM field, or 6+ years as a systems engineer; 6+ years in government or industry; TS/SCI adjudication or ability to obtain SCI and pass a polygraph.
IT, Analysis of Alternatives (AoAs), Course of Actions (COAs), CRQ
2w
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Systems Engineer-IT - E2
Springfield, Virginia, United States
$79k-$147k/yr OnsiteFull Time
Lockheed Martin
Lockheed MartinNYSE: LMT: Global security and aerospace driving innovative defense solutions.
Previous systems administration or configuration management experience and TS/SCI with full-scope polygraph security clearance required. Software build, CM tools, audit, communication, and AI prompting skills preferred.
3mo
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IT Systems Engineer 5 - Annapolis Junction, MD
Annapolis Junction, Maryland, United States
$150k-$225k/yr OnsiteFull Time
M.C. Dean
M.C. Dean: Design-build and systems integration provider for mission-critical infrastructure.
10+ YOEBachelor's in engineering,10+ years progressive experience,TS/SCI w/ poly required,DoD 8570 IAT-II,experience with VMware,Windows Server,Active Directory,virtualization,PowerShell/Python scripting,and data center solutions.
VMware ESXi, vSphere, Microsoft Windows Server, DNS, DFS, DHCP, Windows Server Update Services (WSUS), Key Management Service (KMS), Active Directory, Public Key Infrastructure (PKI), MS SQL, RHEL, MS SharePoint, PowerShell, Python, JSON, Bash, Microsoft Excel, Microsoft Word, Microsoft PowerPoint, Visio, Microsoft SCCM, OCSP, Axway Validation Authority, Microsoft OCSP Responder, McAfee, 3PAR, NetApp, Dell/EMC, Pure Storage, Microsoft SQL Server, DISA STIGs
2mo
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LEAD IT SYSTEMS ENGINEER - PUB SEC
Herndon or Maryland or Virginia or Washington
$145k-$194k/yr HybridFull Time
Lumen
Lumen: Quebec-based private electrical and automation equipment distributor serving commercial, industrial, institutional, municipal, and residential customers.
6+ YOETS/SCI clearance required. Expertise in L2/L3 protocols (BGP, IS-IS, OSPF, MPLS), IPv4/IPv6, security protocols, testing and documentation; CCNA or JNCIA required; CCNP/JNCIP preferred; bachelor's degree plus 6+ years enterprise network design (or 12 years experience).
BGP, MP-BGP, IS-IS, MPLS, RSVP, LDP, OSPF, Multicast, IPv4, IPv6, MBFD, 802.1Q, VRRP, HSRP, TACACS+, RADIUS, FTP, SFTP, TFTP, SSH, NTP, SNMP, 802.1x, IPSEC, MACSEC, SSL/TLS, COMSEC, Ethernet test sets, packet captures, protocol analyzers, MS Office, MS Visio
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Systems Engineer-IT
Herndon, Virginia, United States
$200k-$325k/yr OnsiteFull Time
DPG Solutions
DPG Solutions: Veteran-led Colorado IT providing cleared engineering, DevSecOps, infrastructure modernization, and mission support to government and defense programs.
5+ YOERequires 5+ years in Linux administration, scripting, software development, configuration management, DevOps, or systems engineering; Security+; active TS/SCI with adjudicated CI Polygraph; and US citizenship.
Unix, Linux, Python, Perl, Korn shell, Bourne/Bash, Ansible, CVS, SVN, Git, GitLab, GitLab CI, CI/CD
3mo
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Lead IT Systems Engineer - PUB SEC
United States or Herndon or Alabama or Arkansas or Arizona or Florida or Georgia or Iowa or Idaho or Indiana or Kansas or Kentucky or Louisiana or Maine or Missouri or Mississippi or Montana or North Dakota or Nebraska or New Mexico or Ohio or Oklahoma or Pennsylvania or South Carolina or South Dakota or Tennessee or Utah or Vermont or Wisconsin or West Virginia or Colorado or Hawaii or Michigan or Minnesota or North Carolina or New Hampshire or Nevada or Oregon or Rhode Island or Alaska or California or Connecticut or Delaware or Illinois or Massachusetts or Maryland or New Jersey or New York or Texas or Virginia or Washington
$104k-$152k/yr RemoteFull Time
Lumen Technologies
Lumen TechnologiesNYSE: LUMN: Public telecommunications providing enterprise networking, fiber connectivity, cloud, security, and managed services to organizations.
5+ YOERequires 5+ years Linux systems engineering, 3+ years Kubernetes and Google Cloud Platform or Amazon Web Services, 5+ years Elasticsearch and automation, plus active DoD Top Secret clearance and US citizenship.
Google Cloud, Amazon Web Services, Kubernetes, Ansible, Puppet, Chef, Ruby, Perl, VMware vSphere ESXi, Virtual Center, Elasticsearch, Postgres, Linux, Redhat, CentOS, Rocky, Microsoft?
2mo
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IT Systems Engineer
Washington or San Francisco
$171k-$214k/yr OnsiteFull Time
Scale AI
Scale AI: Develops data and infrastructure for AI systems.
5+ YOE5+ years IT systems/infrastructure experience; hands-on IAM and SaaS administration (Okta, Jamf, Azure/GCC High); scripting (Python, Powershell, bash); familiarity with FedRAMP High/IL6/CMMC/NIST; active Secret or TS/SCI clearance.
Okta Workflows, Okta, GCC High, Microsoft Azure Gov, Opal, Slack, Jamf, Jira, Terraform, Python, Powershell, bash, SAML, OIDC, SCIM, FedRAMP High, IL6, CMMC 2.0, NIST 800-53, NIST 800-171
2w
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Systems Engineer-IT Sr - E3
Herndon, Virginia, United States
$96k-$178k/yr OnsiteFull Time
Lockheed Martin
Lockheed MartinNYSE: LMT: Global security and aerospace driving innovative defense solutions.
5+ YOERequires 5+ years of Linux, scripting/software development, and configuration management experience; Python, Perl, Korn, Bash, Ansible, revision control, Security+, and TS/SCI with CI Poly clearance.
Red Hat Enterprise Linux (RHEL), SE Linux, Red Hat Satellite, Ansible, Python, Perl, Korn, Bourne/Bash, CVS, SVN, Git, GitLab, GitLab CI, Lustre, NFS, Ethernet, RDMA, InfiniBand, OmniPath, MPI, LDAP, AI prompting
2d
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IT Systems Engineer 3 - Falls Church, VA
Falls Church, Virginia, United States
$104k-$143k/yr OnsiteFull Time
M.C. Dean
M.C. Dean: Design-build and systems integration provider for mission-critical infrastructure.
5+ YOEBachelor's degree in a related engineering or IT discipline, 5+ years of progressive experience, U.S. citizenship, active Secret clearance, DoD 8570 IAT Level-II eligibility, and infrastructure engineering experience.
VMware ESXi, VMware vSphere, Microsoft Windows Server, Microsoft Windows 11, DNS, DFS, DHCP, Windows Server Update Services (WSUS), Key Management Service (KMS), Active Directory, Group Policy, Microsoft Endpoint Configuration Manager (MECM), DISA STIG/SRGs, MS SQL, RHEL, Microsoft SharePoint, PowerShell, Python, JSON, Bash, Microsoft Excel, Microsoft Word, Microsoft PowerPoint, Microsoft Visio, OCSP, Axway Validation Authority, Microsoft OCSP Responder, Trellix, Endpoint Security, DLP, HIPS, Microsoft SQL Server, Cisco, NetApp
2w
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Senior IT Engineer
Leesburg, Virginia, United States
OnsiteFull Time
EIT (Electronic Instrumentation & Technology)
EIT (Electronic Instrumentation & Technology): A Zollner-owned electronics manufacturing services provider serving industrial, communications, aerospace, defense, and healthcare customers.
10+ YOERequires 10 years of IT/IS experience, a two-year college degree in computer science, IT, computer or electrical engineering, broad systems and network skills, and knowledge of Windows, Linux, databases, security and ISO processes.
ERP, Voice over Internet Protocol (VOIP), Windows, Linux, Epicor, CMMC, ISO
4d
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IT Systems Engineer, Mobile Client Platform Engineer
Boston or San Francisco or Seattle or New York City or Washington
$285k-$325k/yr HybridFull Time
Anthropic
Anthropic: AI research developing safe and steerable AI systems.
8+ YOEBachelor's degree or equivalent experience; 8+ years managing global corporate mobile fleets; deep iOS management, Android knowledge, MDM infrastructure, AWS, Terraform, configuration-as-code, and clear technical communication.
Python, Shell, Apple Business Manager, ADE, APNs, AWS, Terraform, Jamf, Intune, Workspace ONE, GitOps, CI, Swift, Claude, LLMs, iOS, Android, ChromeOS
1mo
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IT Systems Engineer (Systems Administrator – Senior (NCR)
Fort Washington or Arlington
OnsiteFull Time
Gemini Industries
Gemini Industries: Defense consulting firm providing acquisition, technology-integration, and intelligence-analysis services to U.S. national-security customers.
5+ YOETS/SCI clearance, BA/BS (or AA/AS+4yrs), Security+ or DAWIA, 5+ years experience (4 yrs supporting DoW), systems engineering background, Joint Staff experience; Generative AI and systems-integration skills desired.
Sparx EA, Cameo, Core, Generative AI
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IT Modernization Information Systems Security Engineer
Washington, District of Columbia, United States
OnsiteFull Time
Modern Technology Solutions, Inc.
Modern Technology Solutions, Inc.: Engineering services and technology solutions for national security.
12+ YOE12+ years cybersecurity/IT/systems engineering experience, active Top Secret/SCI with SAP experience, strong cloud security and systems engineering skills, proficiency with secure software tools, and excellent communication and analytical skills.
Java, Python, Ruby, C++, Linux, OPSWAT, OWASP ZAP, BurpSuite, Fortify, Tenable, Defender, SIEM, NMAP, Azure Defender, AWS Inspector, ACAS, Nessus
1w
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IT Engineer
Arlington or New York City or Boston or San Francisco or North America
$140k-$180k/yr HybridFull Time
Quartermaster AI
Quartermaster AI: Maritime intelligence using vessel-mounted sensors and AI to provide real-time ocean awareness to governments and operators.
6+ YOERequires 6–9 years in IT, systems, or network engineering; networking, endpoint, classified-network, scripting, and automation expertise; U.S. citizenship; and a bachelor's degree or equivalent experience. Clearance preferred.
macOS, Windows, Linux, MDM, Google Workspace, JumpCloud, LAN, WAN, VPN, routers, layer 2/3 switches, next-generation firewalls, access points, VLAN, VRF, OSPF, BGP, QoS, DNS, NIPR, SIPR, JWICS, COMSEC, HAIPE, DISA STIGs, Risk Management Framework (RMF), ATO, Python, Bash, PowerShell, General Dynamics TACLANE, Palo Alto Networks, GlobalProtect, Panorama, Ansible, Terraform, Nornir, NIST 800-171, NIST 800-53, CMMC
2mo
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IT Modernization Information Systems Security Engineer
Washington, District of Columbia, United States
OnsiteFull Time
Modern Technology Solutions, Inc.
Modern Technology Solutions, Inc.: Engineering services and technology solutions for national security.
12+ YOE12+ years cybersecurity or systems engineering experience, TS/SCI and DoD SAP access, cloud security expertise, strong analytical and communication skills, bachelor's degree required; security certifications preferred.
NIST SP 800-53, CNSSI 1253, Java, Python, Ruby, C++, Linux, OPSWAT, OWASP ZAP, BurpSuite, Fortify, Tenable, Defender, SIEM, NMAP, Azure Defender, AWS Inspector, ACAS, Nessus
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IT Security Engineer
Arlington, Virginia, United States
$116k-$195k/yr OnsiteFull Time
Twenty Technologies
Twenty Technologies: Private U.S. cyber-warfare software building AI-enabled systems for the military and Intelligence Community.
5+ YOEBachelor's degree or equivalent experience, 5+ years IT security experience, hands-on with network and systems security, SIEM/IDS/IPS tools, cloud security (AWS/Microsoft Azure/GCP), containerization, and strong communication skills.
Splunk, ELK Stack, Snort, Suricata, SIEM, IDS/IPS, Docker, Kubernetes, AWS, Microsoft Azure, GCP, Terraform, Ansible
3mo
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Principal IT Systems Administrator (Program Services)
Sterling, Virginia, United States
OnsiteFull Time
Nightwing
Nightwing: Advanced cyber, intelligence, and systems integration services for national security.
8+ YOE8+ years in government IT environments; Windows and Linux; virtualization; AD, DHCP, DNS; ability to collaborate with customers and engineering teams.
Windows Server, Linux, Virtualization, Active Directory, DHCP, DNS, PowerShell, Python, Bash, Ansible, Splunk, Nessus, Rapid7, DISA STIGs, CIS Benchmarks, MFA, PKI, DLP, NIST 800-53