Operational Technology (OT) Specialist
Operational Technology (OT) Specialist
We are looking for a highly capable and hands-on Operational Technology (OT) Specialist to support and manage complex OT networks, field-level control systems, and secure industrial infrastructure.
The successful candidate will have a deep understanding of OT equipment communication, Layer 0 controls (such as CCTV and access systems), Cisco switch administration, and virtualized server environments. This position requires a technically sound professional who can bridge IT-OT gaps while ensuring system reliability, performance, and security across industrial environments.
Was wir erwarten
- HND/Bachelor of Science in Computer Science (required)
- Additional certifications in OT/ICS, networking, or security are highly desirable.
Experience:
- 3 - 5 years’ experience in OT/ICS, network engineering, or industrial systems administration.
- Experience working in critical infrastructure sectors such as manufacturing, utilities, energy, or oil & gas.
Technical Competencies:
- Strong working knowledge of Cisco switches and CLI (Catalyst 9000, IE series).
- Understanding of field-level communication between OT devices and industrial control systems.
- Proficient in VMware and server OS administration (Windows Server, Linux).
- Familiar with SCADA/HMI platforms (e.g., Siemens WinCC, Wonderware, GE iFIX).
Preferred Certifications:
- Cisco CCNA/CCNP (Industrial or Enterprise)
- GICSP, CompTIA Security+, or ISA/IEC 62443
- VMware Certified Professional (VCP)
Soft Skills:
- Strong troubleshooting and analytical skills
- Excellent communication and documentation abilities
- Ability to work independently and collaboratively across OT and IT teams
Was wir bieten
- A dynamic, challenging, and innovative work environment.
- We believe in nourishing growth and offer training and personal development.
- Competitive remuneration package
Stellenbeschreibung
The role will be responsible for the following:
1. OT Network & Cisco Infrastructure Management
- Configure and maintain OT network infrastructure using Cisco switches (Catalyst and IE series), routers, and industrial firewalls.
- Implement Layer 2/3 protocols, VLANs, ACLs, QoS, and segmentation to meet real-time operational demands.
- Monitor network health and performance, perform diagnostics, and lead incident resolution for communication failures.
2. Layer 0 Controls & Physical Security Systems
- Manage CCTV systems, badge-based access control, interlocks, alarms, and safety devices.
- Ensure that physical systems are securely integrated with OT and ICS platforms.
3. OT Protocols & Industrial Equipment Communication
- Understand and manage communications between OT equipment, such as PLCs, RTUs, HMIs, VFDs, and SCADA/DCS systems.
- Configure and support industrial protocols like Modbus (TCP/RTU), OPC UA, BACnet, DNP3, Ethernet/IP, Profibus, and others.
- Diagnose communication failures between field devices and control systems and optimize data flow for efficiency and stability.
4. Server & Virtualization Management
- Deploy and maintain Windows and Linux servers that host OT applications and SCADA/HMI platforms.
- Manage VMware vSphere/ESXi for hosting OT virtual machines, ensuring high availability and secure configuration.
- Perform backup and disaster recovery processes for OT systems.
5. Cybersecurity & Standards Compliance
- Apply security practices aligned with IEC 62443, NIST 800-82, and corporate cybersecurity frameworks.
- Support segmentation, monitoring, and endpoint protection within OT zones.
- Collaborate with IT and InfoSec teams for secure remote access, vulnerability remediation, and incident response.
6. Documentation & Reporting
- Maintain detailed network schematics, device configurations, system logs, and change management records.
- Provide regular reports on system status, security posture, and recommended improvements.
Assist with audits, compliance reviews, and project documentation
