OT Systems Administrator
9 hours ago
At Dexian DISYS, we are seeking a skilled and proactive Contract OT System Administrator to support and maintain the critical infrastructure within our Operational Technology (OT) environment.
Key Responsibilities:- Manage and maintain Active Directory services, including user and group management, GPO configuration, and ADConnect for hybrid identity solutions
- Oversee the configuration, deployment, and maintenance of Windows servers within the OT environment, ensuring high availability and performance
- Design and implement Group Policy Objects (GPOs) to secure and standardize system configurations across the OT network
- Administer and manage certificate services, including issuing, renewing, and revoking certificates for secure communication and authentication across OT systems
- Configure, manage, and troubleshoot DNS and DHCP services to ensure proper network connectivity and reliable IP addressing
- Participate in data center management activities, including server deployment, monitoring, and regular maintenance
- Utilize monitoring tools like SCOM, OpenManage, and Struxureware to oversee system health, uptime, and performance
- Implement and manage backup solutions to ensure critical data and configurations are securely backed up and available for restoration as needed
- Manage System Center Configuration Manager (SCCM) for software distribution, patch management, and asset inventory within the OT environment
- Administer VMware environments, ensuring optimal performance, scalability, and reliability of virtualized OT systems
- Support cloud-based services and infrastructure, including Microsoft Azure and Office 365, to ensure seamless integration with OT operations
- Participate in incident response activities, helping to quickly resolve system issues while minimizing downtime
- Bachelor's degree in information technology, Computer Science, or a related technical field
- Minimum 5 years of experience as a system administrator, preferably within an OT or industrial environment
- Proficiency in Active Directory administration and GPO management
- Strong knowledge of Windows Server administration and DNS/DHCP configuration
- Experience with monitoring tools like SCOM, OpenManage, and Struxureware
- Familiarity with SCCM for managing patches, software distribution, and system configurations
- Expertise in virtualization using VMware
- Knowledge of backup solutions and strategies for disaster recovery
- Experience with Microsoft Azure, Office 365, and ADConnect
- Strong analytical and problem-solving skills, excellent communication abilities, and the capacity to work both independently and as part of a team
- Previous experience working with OT systems in offshore environments
- Hands-on experience with data center operations, including rack-and-stack server deployment, monitoring, and support
- Understanding of security standards relevant to OT systems, such as IEC-62443
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