CyberSecurity/SysAdmin

RMC is seeking a Systems Administrator for a full‑time in‑office position in Yamaguchi, Japan! We’re in search of an exceptional Systems Administrator to become a part of our mission‑driven team, dedicated to making a difference in the federal and commercial markets. At RMC, we’re all about enhancing security for both our military and global commercial partners, offering an array of services such as Risk Management, Mission Assurance, and Cybersecurity.

Comprehensive health, vision, and dental insurance plans fully covered for employees

Subsidized dependent health care coverage

Participation in our Annual Bonus Program

Life insurance policy equivalent to 1x your annual salary.

Company paid short and long‑term disability

Cell phone reimbursement of $65 per month

The Systems Administrator (SA) is responsible for working independently and providing operational technology focused systems administration duties. The focus areas will include support to customers and cybersecurity and Risk Management Framework (RMF) staff. The SA will be responsible for the proactive management and upkeep of Facility Related Control System (FRCS) servers, workstations and other components. The SA will be responsible for performance and capacity baselines, backup, restoration, security configuration implementation, patching and availability management. The SA will be proactive, investigating user issues, system configuration anomalies, outages and degradations in capability while tracking incidents, progress to resolution, and keeping the FRCS program manager informed through regular status reporting. The SA will work closely with other cybersecurity assessment teams to share data and coordinate systems administration activities. The Administrator is responsible for collecting and analyzing systems performance data and authoring client deliverables and reports as well as for ensuring the successful completion and provision of quality deliverables to respective clients that document, and in some cases identify corrective actions/mitigations to FRCS cybersecurity vulnerabilities with potential impacts.

Install and configure physical and virtual servers (Windows/Linux), maintain virtualization environment, webservers and database servers.

Assist in configuration control boards as a reviewer, develop backout plans, develop implementation steps, schedule downtime and perform system maintenance in support of functionality upgrades and cybersecurity hardening.

Manage Active Directory, Group Policy, or local authentication services, enforce least privilege and multi‑factor authentication, and create and disable user accounts in accordance with role changes on System Access Authorization Request documents.

Coordinate with cybersecurity, compliance, and facility maintenance teams to maximize availability and integrity of the platforms and support integration of new equipment into control networks.

Develop, submit, and maintain artifacts in concert with cybersecurity/RMF teammates for control systems and SCADA environments, including hardware and software inventories.

Support site assessments, system categorization, and cybersecurity evaluations for operational technology (OT).

Continuously assess the system availability, integrity and confidentiality of assigned systems by verifying configurations, reviewing vulnerability and configuration compliance audits.

Assist in assessment activities on both FRCS/OT and IT according to documented requirements (i.e. Analyze assessment data to identify system deficiencies and vulnerabilities.

Drive continuous improvement of computer network defense capabilities through the evaluation and adoption of new technologies, tools, and processes.

Provide remediation recommendations to address vulnerabilities, develop and work through change management processes to ensure configuration control.

Stay abreast of emerging cyber threats, attack techniques, and industry best practices in computer network defense. Travel to supported installations and required locations to provide related cybersecurity expertise.

Excellent writing skills, strong communication abilities, good time management and organizational skills.

Experience using tools and applications such as Word, PowerPoint, Excel and SharePoint.

Work confidently in a fast‑paced environment with the ability to independently support multiple projects.

Possess an in‑depth knowledge of concepts, best practices, and controls in a breadth of systems administration, such as interior and exterior routing protocols, virtual routing and forwarding networks, VLANS, encryption technologies, zero trust architecture and access control lists across all resources.

Experience administering and supporting network infrastructure, primarily in a Department of Defense (DOD) environment.

Ability to work in a team environment and take initiative to help ensure team tasks are successfully completed within required timelines.

Familiarity with DOD Cybersecurity policy, utility control systems, building control systems and industrial control systems.

Maintenance and verification of software and hardware inventories via both manual and automated means.

Configuration Control/Change management.

Bachelor’s Degree in Computer Science or IT related field or at least 4 years of experience in system administration.

Minimum of 5 years of relevant experience in computer systems administration in Windows and Linux environments.

DoD 8140 compliant as a Level II systems Administrator 451 (Security+, Network+, MCSA, CEH)

Security Clearance: Obtaining a DoD Secret Clearance. Valid Passport: Possession of a current passport with a minimum of 8 months remaining until the expiration date.

Travel Flexibility: Willingness and capability to travel, CONUS and OCONUS approximately 20% of the time.

Reasonable Accommodations may be made to enable qualified individuals with disabilities to perform the essential functions.

This document does not represent a contract of employment, and RMC reserves the right to change this position description and/or assign tasks for the employee to perform, as RMC may deem appropriate.