Senior Advanced Systems Admin Specialist

Responsibilities for this Position

Senior Advanced Systems Admin Specialist

ID: 2026-70477
USA-CT-Groton
Required Clearance: Secret
Posted Date: 2/2/2026
Category: Information Technology
Employment Type: Full Time
Hiring Company: General Dynamics Mission Systems, Inc.


Basic Qualifications

Bachelors 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.

CLEARANCE REQUIREMENTS:
Department of Defense Secret security clearance is required at time of hire. Applicants selected will be subject to a U.S. Government security investigation and must meet eligibility requirements for access to classified information. Due to the nature of work performed within our facilities, U.S. citizenship is required.

Responsibilities for this Position

At General Dynamics Mission Systems, we create the technologies, products and services that help our nations heroes keep our nation safe. The work we do is so advanced, we are continuously moving the boundaries of whats possible. Here youll work with the best and your talent will be front and center on projects that impact the world. Are you up to the challenge?

We apply advanced technologies such as Artificial Intelligence, Blockchain, AR/VR, Cloud Native and Quantum Physics to solve our customers missions in cyber, RF, undersea, interstellar and everything in between.

As a seasoned leader, youll be involved with our client's decision-making process by serving as a front-line interface to users with technical issues and conducting systems analysis and development to keep systems current with changing technologies. Your duties may include installing new software, troubleshooting, granting permissions to applications and training users. Youll also be responsible for the day-to-day support of server services by performing server administration for physical and virtual server operating systems and configuring, maintaining and troubleshooting of physical and virtual hardware and network related interfaces on servers. Well rely on you to perform, maintain, troubleshoot and conduct a complete analysis of alerts; create scripts to automate repetitive processes; and work with customers to identify, isolate, and resolve problems with servers that are affecting other services.

Responsibilities for this Position

Are you ready for an exciting career as a Network & Systems Engineer supporting our Nation's prestigious cyber initiatives? Do you want to challenge yournetworking skills and knowledge by supporting multiple Communities of Interests? If so, General Dynamics Mission Systems (GDMS) has an exciting career opportunity for you as aSeniorNetwork & Systems Engineer for the Information Technology - Limited Access Area (LAA) Team as part of Engineering Support Services.This position is a primary role as a Network Engineer, with a secondary focus as a Systems Engineer.

In this role as a SeniorNetwork & Systems Engineer you will:

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.

What you bring to our team:

A Bachelors 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. You may also bring equivalent relevant experience and certifications.CCNP preferred, at minimum CCNA.Considered to be expert and an authority in discipline.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.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.

Familiarity with compliance controls: STIGs/CIS Benchmarks, NIST SP 800-171/800-53, Cybersecurity Maturity Model Certification (CMMC), System Security Plans.Experience with implementing Linux/Windows security controls to maintain system compliance.

Experience working within the requirements of a change management system.

Proficient with Tenable Nessus, Splunk.

Proficient creating/modifying Microsoft Visio network diagrams.

Experience with vSphere and or Hyper-V.

What sets you apart:

An advanced knowledge of RedHat Linux, Windows Server, and/or VMware vSphere.Assured Compliance Assessment Solution (ACAS) Experience.Endpoint Security Solution (ESS) Experience.Subject Matter Expert in researching and troubleshooting complex technical issues.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.

What else you should know:

• Department of Defense Secret clearance required at time of hire. Applicants selected for the SeniorNetwork & Systems Engineer position will be subject to a U.S. Government security investigation and must meet eligibility requirements for access to classified information.
• 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.
• General Dynamics is an Equal Opportunity/Affirmative Action Employer that is committed to hiring a diverse and talented workforce. EOE/Disability/Veteran.

NOTE: This position is ON SITE at our Groton, CT Location.

Salary Note

This estimate represents the typical salary range for this position based on experience and other factors (geographic location, etc.). Actual pay may vary. This job posting will remain open until the position is filled.

Combined Salary Range

USD $133,205.00 - USD $140,490.00 /Yr.

Company Overview

General 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. With a global team of 12,000+ top professionals, we partner with the best in industry to expand the bounds of innovation in the defense and scientific arenas. Given the nature of our work and who we are, we value trust, honesty, alignment and transparency. We offer highly competitive benefits and pride ourselves in being a great place to work with a shared sense of purpose. You will also enjoy a flexible work environment where contributions are recognized and rewarded. If who we are and what we do resonates with you, we invite you to join our high-performance team!

Equal Opportunity Employer / Individuals with Disabilities / Protected Veterans

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