GD

Network/System Administrator (Net/Sys Admin) III - Gunsan, South Korea

General Dynamics Information Technology

KRonsite$94k-$109k/yrPosted Aug 19, 2026
Posting intelligenceActively listed

Skills

classificationoraclesaptypescript

About the role

Clearance Level

Top Secret/SCI

Category

IT Infrastructure and Operations

Location

Gunsan, Korea, Republic Of

(Onsite Workplace)

Key Skills For Success

Network Administrator

Network Architecture

Network Engineering

REQ#: RQ226690

Public Trust: None

Requisition Type: Regular

Your Impact

Own your opportunity to support our nation's defense. Make an impact by connecting and securing critical operations across the globe, keeping our country safe and secure.

Job Description

LOCATION : Gunsan, South Korea

The primary function will be to organize, install, and support government organization’s computer systems, including local area networks (LANs), wide area networks (WANs), network segments, intranets, and other data communication systems. This will also include helping architect, design and analyze network models. It will require participation in decisions about buying future hardware or software to upgrade organization’s infrastructure.

This position might be called upon to provide technical support to computer users to help solve users’ problems. This position will support a “day-to-day” support for Collateral, Sensitive Compartmented Information (SCI) and Special Access Program (SAP) activities. MUST HAVE 2 YEARS OF SAP experience. No exceptions.

Performance shall include:

Ability to perform self-sustaining and work with little to no oversight.

Lead IT ops team on day-to-day management and operations of Networks and implement capabilities vetted through Cybersecurity, ISSE and higher headquarters to maintain JSIG/RMF Authority to Operate and maintain Continuous Monitoring tools and processes.

Manage COTS & GOTS products to collect, display and remediate a variety of automated system security and system operations/performance functions and metrics.

Assist during security assessments of servers/network devices/security appliances.

Assist during security assessments with regard to accuracy and efficiency.

Assist with Creation of operational Operations and Maintenance (O&M) checklists to maintain the service (daily, weekly, monthly, yearly O&M checklists); build Tactics, Techniques and Processes (TTPs) and Standard Operating Processes (SOPs) associated with service checklists.

Manage and operate monitoring tools/capabilities with the enterprise security information and event management (SIEM) and create/tailor complex event alarms/rules and summary reports.

Execute cybersecurity operations procedures for day-to-day network management, operations and maintenance.

Monitor/analyze output of cybersecurity related tools for reportable security incidents and residual risk.

Assist in analyzing technical risk, upon request, of emerging cybersecurity tools and processes.

Work as part of a security incident response team as needed.

Assist ISSM/ISSO/ISSE with the Integration/Development new techniques to improve.

Confidentiality, Integrity, and Availability for networks/systems operating at various classification levels.

Confidentiality, Integrity, and Availability for networks/systems operating at various classification levels.

Advanced technical competency in one or more of the following supported platforms:

Microsoft Windows Server, Active Directory Red Hat Enterprise Linux servers, MS Hyper-V/VMWare/ESx/Xen Hypervisors, Enterprise networking/firewalls/intrusion detection/prevention systems, forensic analysis/vulnerability assessment, Group Policy management and configuration, Scripting, BMC Footprints, WSUS, , Lumension, Bitlocker, SQL Server 2012, TomCat, IIS, Windows Server 2012r2/2016, Win 10, Red Hat 6.5, Microsoft Office Toolkits, SEIMs, Logrhythm, ACAS/Nessus/SCAP, mandatory/role-based access control concepts (e.g. SE Linux extensions to RHEL, PitBull, AppArmor, and Sentris), video teleconferencing/VOIP, Oracle/MS SQL database security, and Apache/IIS Web server security.

Other Requirements:

Thorough knowledge of Microsoft Windows desktop and server operating systems, Microsoft Exchange Server, and as needed RHEL operating systems administration and associated hardware.

Experience in effective communication and collaborating in a high-performance team environment.

Group Policy design and configuration.

Working knowledge of CISCO network and switching and virtualization technologies.

Working knowledge of virtualization as it applies to user environments, operating systems, and network appliances.

Working knowledge of Local Area Network (LAN) and Wide Area Network (WAN) technologies and data backup technologies.

Working knowledge communications security (COMSEC) policies and integration.

Working knowledge of Risk Management Framework, Common Criteria, and System Security Policy as they relate to assessments and authorization.

Working knowledge and current relevant experience with PL2, PL3, and PL4 network environments/systems.

Working knowledge of WSUS and/or YUM patch deployment methodologies.

Must be familiar with DoD policy as it applies to implementing and executing system and network administration.

Working knowledge of Risk Management Framework and how to apply it to network/information system environments.

Experience:

5+ years related experience.

2+ years SAP experience required.

Education:

Bachelor’s degree in a related area OR Associate’s degree in a related area + 2 years’ experience OR equivalent experience (4 years)

Certifications:

IAT Level III - (CISSP, CASP+ CE, CCNP Security, CISA, etc.)

Clearance Required to Start:

TS/SCI required.

Must be able to Attain – TS/SCI with CI Polygraph.

#AirforceSAPOpportunities #DefenseOCONUS

Work Requirements

Years of Experience

5 + years of related experience

may vary based on technical training, certification(s), or degree

Certification

CASP CE+ - CompTIA - CompTIA

CCNP - Cisco - Cisco

Travel Required

10-25%

Citizenship

U.S. Citizenship Required

Salary and Benefit Information

The likely salary range for this position is $93,662 - $108,560. This is not, however, a guarantee of compensation or salary. Rather, salary will be set based on experience, geographic location and possibly contractual requirements and could fall outside of this range. Total compensation for international positions varies by tax, social security, and immigration statuses, as well as location. Generally, an international assignment may include allowances, premium uplifts, and/or relocation or transportation benefits, above base salary range noted.

Our Identity Verification Process

As part of the hiring process, we will ask you to complete an identity verification process that leverages advanced biometrics and artificial intelligence to ensure authenticity and protect against identity fraud. You are expected to be on camera during virtual interviews. We reserve the right to take your picture to verify your identity and prevent fraud. By proceeding, you authorize the collection, processing, and use of your biometric data for identity verification and security purposes.

About Our Work

We are GDIT. A global technology and professional services company that delivers technology solutions and mission services to every major agency across the U.S. government, defense and intelligence community. Our 26,000 experts extract the power of technology to create immediate value and deliver solutions at the edge of innovation. We operate across 50+ countries worldwide, offering leading mission-ready capabilities in AI, cloud, cyber and software development.

Join our Talent Community to stay up to date on our career opportunities and events at gdit.com/tc.

Compensation

This Platform Engineer role pays $94k-$109k/yr. Within typical range for platform engineer roles in South Korea.

Questions about this role

Click "Apply with AI Applyd" above and you are done. Your resume is rewritten for this advert, the screening questions are answered, and it is submitted on General Dynamics Information Technology's own hiring system. No retyping your history, no fourteen tabs, no evening lost.

Compensation for Platform Engineer roles in South Korea varies widely by seniority, employer size, and remote vs onsite arrangement. Check the salary range on this listing when published, or browse our Platform Engineer hub for South Korea medians across recent openings.

You never touch the form - the application is filled and submitted for you on General Dynamics Information Technology's own hiring system. It is not marked sent when we press submit. It is marked sent when a confirmation from their system arrives at the address we apply with, and your dashboard shows which stage each application is at until then.

Twelve applicant tracking systems have a real apply path: Workday, Greenhouse, Lever, Ashby, Workable, iCIMS, Personio, Recruitee, Teamtailor, Rippling, Breezy and SmartRecruiters. Your application goes in on the employer's own hiring system, never into an aggregator queue.

Want AI Applyd to auto-apply to roles like this?

We tailor your resume per posting, fill the forms, and track replies for you.