OT Engineer

C3i Hub; Kanpur; On-site; INR 1,500,000 - 2,500,000; Full time

Job summary

C3i Hub in India is seeking an OT/ICS PLC Engineer with hands-on PLC programming, testing, and commissioning across multiple industrial automation systems. The candidate will work with Siemens, Schneider Electric, ABB, Rockwell, Phoenix Contact, and other OEM platforms, and design SCADA/DCS/HMI interfaces for clear process visibility.

You will configure and troubleshoot protocols like Modbus TCP/RTU, OPC UA, Profinet, EtherNet/IP, and participate in OT networking, Purdue model, and OT/ICS

Qualifications

• Strong hands-on expertise with Siemens, Schneider, ABB, Rockwell, Phoenix Contact PLC/HMI platforms.
• Experience across multi-OEM PLC platforms in different projects.
• Knowledge of SCADA/DCS/HMI systems and PLC-HMI/SCADA communication.

Responsibilities

• Develop, test, and implement structured PLC code using IEC 61131-3 languages.
• Program and maintain systems across major PLC platforms (Siemens, Schneider, ABB, Rockwell, Phoenix Contact).
• Design SCADA/DCS/HMI interfaces for clear process visibility.
• Configure and troubleshoot key industrial protocols (Modbus TCP/RTU, OPC UA, Profinet, Profibus, EtherNet/IP).
• Diagnose and troubleshoot software, hardware, and network faults in live environments.
• Coordinate with OEMs, vendors, and IT/OT teams; support training and audits.

Skills

Siemens PLC

Schneider Electric PLC

ABB PLC

Rockwell PLC

Phoenix Contact PLC

HMI systems

SCADA/DCS/HMI

OT/ICS cybersecurity basics

Education

BE/B.Tech in Electrical/Electronics/Instrumentation/Automation

Job description

Role Summary

We are looking for an OT/ICS PLC Engineer with strong hands-on expertise in PLC programming, troubleshooting, testing, and commissioning across industrial automation systems. The candidate should have strong proficiency in more than one major PLC platform and hands-on exposure to other OEM platforms. Basic working knowledge of SCADA,DCS,HMI, industrial communication protocols, OT networking, and OT/ICS cybersecurity is required.

Key Responsibilities

• Develop, test, and implement structured PLC code using IEC 61131-3 languages (Ladder Logic, Structured Text, Function Block Diagrams).
• Program and maintain systems across Siemens (TIA Portal, STEP 7, S7-1200/1500 etc.), Schneider Electric (EcoStructure, Control Expert, etc.), ABB (ABB500/800, Automation builder, CODESYS etc.), Phoenix Contact (PLCnext Engineer, PC WORX, etc.), Allen-Bradley (Studio 5000, RS Logix, ControlLogix, CompactLogix, etc.) and other OEM (PLC/HMI) platforms.
• Design SCADA/DCS/HMI interfaces using Wonderware/InTouch, FactoryTalk View, WinCC, ABB Engineering workplace etc. for clear process visibility.
• Configure and troubleshoot various industrial protocols including Modbus TCP/RTU, OPC UA, Profinet, Profibus, EtherNet/IP, IEC 60870-5-101/104, IEC 61850 etc.
• Diagnose complex software, hardware, and network faults on active systems, minimizing downtime.
• Backup/restore of programs and configurations.
• Generate and maintain I/O lists, functional specifications, and wiring diagrams.
• Coordinate with OEMs, vendors, and cross-functional IT/OT teams for hardware/software support and smooth execution.
• Support VAPT (Vulnerability Assessment & Penetration Testing) activities and additional R&D projects related to OT/ICS control system security.
• Provide support to the training team during OT workshops, training sessions, and testing activities etc.
• Travel to client locations as required to support OT sector audits and assessments.

Required Skills

• Strong hands-on expertise in hardware and software knowledge of Siemens, Schneider, ABB, Rockwell, Phoenix Contact, etc. PLC & HMI systems.
• Hands-on experience working on multi-OEM PLC platforms across different projects.
• Working knowledge of SCADA,DCS & HMI systems such as Wonderware/InTouch, ABB Workplace ,WinCC, FactoryTalk View, etc., with ability to troubleshoot PLC-HMI/SCADA communication.
• Working knowledge of OT/ICS network architecture, Purdue Model, industrial firewalls and network segmentation.
• Basic understanding of OT/ICS cybersecurity concepts and standards such as IEC 62443 and NIST.
• Working knowledge of industrial protocols such as Modbus TCP/RTU, OPC UA, Profinet, Profibus, EtherNet/IP, IEC 60870-5-101/104 and IEC 61850.
• Basic working knowledge of network/security testing tools - Wireshark, Nmap, Modscan, etc.
• Strong analytical and root-cause troubleshooting skills across software, hardware, and network layers in live environments.
• Good communication and documentation skills.

Education

B.E./B.Tech. in Electrical, Electronics, Instrumentation, Automation Engineering, or related field

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