Software Engineer Japan Jobs (NOW HIRING)

RMC is seeking a Control Systems Engineer for a full-time position in Shizuoka, Japan!

Competitive sign-on bonus available for qualified candidates, subject to eligibility requirements and company policy.

Are you ready to embark on a fulfilling and impactful career journey with RMC Global? We're in search of an exceptional Control Systems Engineer 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.

Our team's well-being is paramount, and we reflect this commitment through our flexible work environment and exceptional company culture. By joining RMC, you become a key contributor to our mission – Assuring Tomorrow!

When you join RMC, you'll experience a range of benefits, including:

• 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
• 401(k) Plan with contributions
• A 401(k) Safe Harbor Employer Contribution Program, which includes a 3% contribution

Position Summary:

The OT Control Systems Engineer is responsible for working independently to support, inspect, and ensure the secure and reliable operation of Facility-Related Control Systems (FRCS) and other Operational Technology (OT) infrastructure. This role focuses on both technical oversight and cybersecurity assurance, with close coordination alongside system owners, integrators, and RMF cybersecurity personnel. Key responsibilities include overseeing the configuration, performance, and security posture of FRCS components such as PLCs, HMIs, industrial servers, and control networks. The Engineer will proactively inspect and verify system baselines, perform configuration and patch validation, assess system availability and uptime, and ensure adherence to approved cybersecurity and engineering standards. The OT Controls Engineer/Inspector will identify and investigate abnormal system behavior, control loop issues, or unauthorized modifications, while maintaining detailed documentation of findings, deviations, and recommended corrective actions. The role requires regular collaboration with cybersecurity assessment teams and program managers, contributing to technical reports and client deliverables that document system integrity, performance, and any cybersecurity vulnerabilities with potential operational or mission impacts. The Engineer is also responsible for assisting in the development and validation of test plans, inspecting installed systems against design drawings and functional specifications, and ensuring integration of cybersecurity controls within engineering constraints.

Essential Functions:

• Design, program, and troubleshoot SCADA systems and PLCs for potable water, wastewater, and stormwater treatment systems.
• Participate in multidisciplinary teams throughout the military construction (MILCON) process—from basis of design and submittal review to startup and commissioning.
• Apply Unified Facilities Criteria (UFC), environmental regulations (e.g., Clean Water Act, NPDES), and DoD-specific guidance to control system design and performance.
• Assist in configuration control boards as a reviewer, develop OT-centric backout plans, develop implementation steps, schedule downtime and perform system maintenance in support of functionality upgrades and cybersecurity hardening.
• 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.
• Conduct field verification, as-built reviews, and acceptance testing of SCADA and telemetry systems.
• Interface with DoD engineering, environmental, and cybersecurity personnel to ensure operational and regulatory compliance.
• Support legacy system upgrades, energy efficiency improvements, and cyber-resilient SCADA designs.
• Install, configure, and program control system hardware and software.
• Perform preventive maintenance and continuous monitoring functions.
• Respond and correct system alarms and emergencies.
• Analyze system data to assist in identifying system deficiencies and vulnerabilities.
• Provide remediation recommendations to address system issues.
• Work with cyber, network, and sysadmin teams in facilitation of system compliance and function according to DOD guidance.
• Participate in conferences, work groups, meetings and other required events.
• Travel to supported installations and required locations to provide related FRCS expertise

Competencies:

• 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 control systems, ladder logic and configuration backup and restore operations.
• Ability to work in a team environment and take initiative to help ensure team tasks are successfully completed within required timelines.
• Strong ability to interact and communicate both written and verbally with people at all levels, both technical and non-technical.
• Possess strong problem-solving skills.
• Maintenance and verification of software and hardware inventories for PLC and OT equipment.

Education & Experience Requirements:

• Bachelor’s Degree in Engineering related field or at least 2 years of experience in operational technology engineering or cyber.
• Minimum of 3 years of experience in SCADA systems and PLC programming, preferably in municipal or DoD environments.
• Working knowledge of leading platforms (e.g., Rockwell, Schneider, GE, or VTScada).
• Familiarity with water/wastewater operations, hydraulic systems, chemical dosing, and remote monitoring technologies.
• Experience with MILCON or federal design-build projects and related contracting requirements.
• Understanding of environmental permitting, reporting, and regulatory requirements.

Required Certificates & Licenses (if any):

• NICET, ISA/IEC 62443, or equivalent systems engineering certifications.

Desired Certificates & Licenses (if any):

• Any SCADA PLC and software certification for water, wastewater, or electrical systems, preferred vendors include Keyence, Fuji Electric and Hitachi.
• DDC HVAC Certifications for Johnson Controls and Automated Logic
• OSHA 30, HAZWOPER, or water operator licenses a plus.
• Any familiarity with Japanese Language a bonus

Other Requirements:

• Security Clearance: Obtaining a DoD Secret Clearance. Applicants selected will be subject to a government security investigation and must meet eligibility requirements for clearance level required for the job.
• 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.
  • Telecommunication is potentially authorized for this role in a very limited scope.
• Work Environment Compliance: Commitment to maintaining a drug-free work environment, U.S. Citizenship, and possession of a valid state driver's license.

Want to take the next step in your career with RMC? This Control Systems Engineer role is where your skills and talents will thrive, and you'll be part of something truly meaningful.

Join us today!

https://rmcglobal.com/

Reasonable Accommodations Statement

To perform this job successfully, an individual must be able to perform each essential duty satisfactorily. Reasonable Accommodations may be made to enable qualified individuals with disabilities to perform the essential functions.

RMC has reviewed this job description to ensure that essential functions and basic duties have been included. It is intended to provide guidelines for job expectations and the employee's ability to perform the position described. It is not intended to be construed as an exhaustive list of all functions, responsibilities, skills, and abilities. Additional functions and requirements may be assigned by your manager as deemed appropriate. 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.

RMC is an Equal Opportunity Employer.