General Dynamics Mission Systems · 4 hours ago
Senior Advanced Systems Admin Specialist
New London County, CT
Full-time
Onsite
Senior Level
$133K/yr - $140K/yr
6+ years expGeneral Dynamics Mission Systems (GDMS) engineers a diverse portfolio of high technology solutions, products and services that enable customers to successfully execute missions across all domains of operation. They are seeking a Senior Advanced Systems Admin Specialist to provide day-to-day communication and network security operation, maintain secure network infrastructures, and perform server administration. The role involves troubleshooting, designing network architectures, and ensuring compliance with security standards.
AerospaceBusiness Information SystemsInformation ServicesInformation TechnologyNational SecuritySensor
No H1B
Security Clearance RequiredU.S. Citizen Only
Responsibilities
Provide day-to-day communication/network security operation and maintenance of multiple secure network infrastructures
Design, develop, build, and test network engineering solutions as part of a team that introduces new technologies and/or improves existing technologies in compliance with established project management processes
Lead major project initiatives and develop configurations using expertise in routing protocols, firewalls, datacenter protocols, security requirements and network virtualization
Troubleshoot, develop and design network architectures consisting of multilevel access and multilevel security platforms
Configure, install, and troubleshoot Cisco routers, switches, VOIP systems, video teleconferencing, and various other network and telecommunication components
Analyze and determine corrective action for secure data communications networks
Implement US government COMSEC/NIST standards and practices
Program, install, load, and troubleshoot KG-175 TACLANE Encryptors
Install new software, troubleshoot, grant permissions to applications
Day-to-day support of server services by performing server administration for physical and virtual server operating systems and configuring, maintaining and troubleshooting of both physical and virtual
Perform OS and vendor software patching on servers and monitor physical and virtual servers performance using monitoring tools
Qualification
Required
Bachelor's degree in Computer Science, a related field or equivalent experience is required plus a minimum of 8 years of relevant experience; or Master's degree plus 6 years of relevant experience
Department of Defense Secret security clearance is required at time of hire
U.S. citizenship is required
A Bachelor's degree in systems engineering, a related specialized area or field and a minimum of 8 years of relevant experience or a Master's degree plus a minimum of 6 years of relevant experience
Considered to be expert and an authority in discipline
Experience with the following: Extensive demonstrated experience and ability in working with TCP/IP as it relates to Subnetting, DHCP, DNS, security, Packet Analysis / Troubleshooting
Demonstrated experience in deploying, working with and troubleshooting Firewall Systems, Policies and ACLs
Experience with AAA systems including Radius, LDAP, TACACS and Cisco ISE
Experience with Cisco ISE for 802.1x
Experience with BGP
Understand PKI
Experience with implementing Linux/Windows security controls to maintain system compliance
Experience working within the requirements of a change management system
Ability to engineer with system security as number one priority
Ability to quickly grasp and adopt new technologies while continuously developing yourself
Handle all levels of support with ability to collaborate and communicate with those of varying levels of technical skill
Ability to multi-task, attention to detail, and strong motivational skills
Strong analytical and problem-solving skills from a variety of viewpoints
Applicant must meet DoD 8570.1 certification requirements for IAT-II or higher
You must complete CompTIA Security+ certification minimum within 6 months of hire
Preferred
CCNP preferred, at minimum CCNA
Experience with Cisco/Palo Alto Network Infrastructure Components including: Cisco Catalyst and Nexus Data Center Switches, Cisco ISR and ASR Platform Routers, UCS Virtualization, Cisco ASA / FTD Security Appliances, Palo Alto NGFW
Experience in the fielding and operations of TACLANE Encrypters
Familiarity with compliance controls: STIGs/CIS Benchmarks, NIST SP 800-171/800-53, Cybersecurity Maturity Model Certification (CMMC), System Security Plans
Proficient with Tenable Nessus, Splunk
Proficient creating/modifying Microsoft Visio network diagrams
Experience with vSphere and or Hyper-V
Company
General Dynamics Mission Systems
General Dynamics Mission Systems designs and delivers critical systems and products for defense and cybersecurity customers. It is a sub-organization of General Dynamics.
10001+ employees
Funding
Current Stage
Late StageLeadership Team
Bo Elam
VP and CFO
Scott Butler
Senior Vice President Program Execution
Recent News
Washington Technology
2026-01-17
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