Software Engineer III, Patching and Lifecycle Management

Mitsubishi Heavy Industries

Engineer responsible for software patching, lifecycle management, and cybersecurity at Mitsubishi Power. Ensuring secure and auditable deployment of software updates across operational technology environments.

Posted 6/2/2026full-timeOrlando • Florida • 🇺🇸 United StatesMid-LevelSeniorWebsite

Tech Stack

Tools & technologies

Cyber SecurityLinuxPythonVMware

About the role

Key responsibilities & impact

The Software Patching, Lifecycle & OT Cybersecurity Management Engineer is responsible for the review, validation, packaging, documentation, and deployment support of software, firmware, and security updates across secure operational technology (OT) and control system environments.
This role supports Windows and Linux systems operating in both air‑gapped control systems and enterprise OT networks, ensuring updates are applied in a controlled, secure, and auditable manner.
The position owns the end‑to‑end patch and vulnerability management lifecycle, including patch applicability review, lab validation, vulnerability scanning, risk assessment, remediation coordination, scripting and automation, and compliance documentation.
Working closely with engineering, cybersecurity, and field teams, the engineer ensures updates are implemented accurately and aligned with operational and security requirements.
Drive continuous improvement initiatives to enhance patch quality, operational efficiency, and cybersecurity posture.
Ensure adherence to company policies, cybersecurity standards, safety requirements, and customer expectations.

Requirements

What you’ll need

Bachelor’s degree in Computer Science, Cybersecurity, Information Systems, Computer Engineering, Electrical Engineering, or a related field; or equivalent relevant work experience
3–7 years in patch management, systems engineering, OT support, cybersecurity operations, vulnerability management, or a related technical field
Strong hands‑on experience administering Windows and Linux systems
Experience supporting patching and lifecycle maintenance in offline, air‑gapped, or restricted environments, including maintaining offline update repositories for Windows and Linux
Experience executing and interpreting vulnerability scans, including CVE analysis, severity scoring, exploitability assessment, remediation tracking, and closure verification
Familiarity with Active Directory, Group Policy, Windows Remote Management (WinRM), and WSUS in domain environments
Proficiency with PowerShell, Python, and/or Bash for automation, reporting, and operational support
Experience supporting virtualization platforms such as VMware and related infrastructure
Experience with endpoint management tools such as Tanium, including scripting and/or package deployment (preferred)
Experience supporting operational technology (OT), industrial control systems (ICS), or critical infrastructure environments
Familiarity with vulnerability management workflows, least privilege, secure update handling, audit documentation, and risk acceptance processes
Knowledge of NERC CIP or other regulated cybersecurity requirements (preferred)
Strong troubleshooting, root cause analysis, and problem‑solving skills
Ability to produce clear technical documentation (procedures, validation records, reports, release notes) and customer‑facing guidance/correspondence; ability to present technical information and respond to questions from managers, customers, and field personnel
Strong organizational and time‑management skills, including managing recurring deliverables and remediation tracking
Experience supporting customers remotely and onsite in production environments
Flexibility to work outside standard business hours to support maintenance windows
Ability to travel up to 20%.

Benefits

Comp & perks

Excellent Benefits (Medical, Dental, Vision & 401K Matching)
Excellent development programs and advancement opportunities
Tuition reimbursement and on-the-job training
Paid vacation, sick time, and holidays
Committed to quality products and services
Great working environment and culture
Employee Appreciation Programs and Event

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills & Tools

patch managementsystems engineeringcybersecurity operationsvulnerability managementWindows administrationLinux administrationPowerShellPythonBashvulnerability scanning

Soft Skills

troubleshootingroot cause analysisproblem-solvingtechnical documentationorganizational skillstime-management skillscustomer supportflexibilitycommunication skillspresentation skills