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About the Role

This position is responsible for developing, modifying, testing, and maintaining industrial automation software using Siemens technologies, with a primary focus on software development and remote engineering support. The role utilizes Siemens TIA Portal V21, Siemens S7 PLCs, and WinCC SCADA/HMI platforms, and does not involve electrical design, panel design, or site installation.

Responsibilities

• Develop PLC application software using Siemens TIA Portal V21.
• Develop and maintain Siemens S7-1200 and S7-1500 PLC programs.
• Develop, configure, and modify WinCC HMI/SCADA applications.
• Review Functional Design Specifications (FDS), Sequence of Operations (SOO), Cause & Effect matrices, and I/O schedules before development.
• Develop modular, reusable, and well-documented PLC software.
• Perform offline software testing using PLCSIM where applicable.
• Support Factory Acceptance Testing (FAT) remotely.
• Provide remote software support during commissioning and troubleshooting.
• Maintain software version control, backups, and revision history.
• Prepare software documentation, testing records, and change logs.
• Collaborate with project managers, controls engineers, and commissioning teams.
• Read and interpret electrical schematics, control panel drawings, wiring diagrams, P&IDs, and I/O schedules.
• Apply sound understanding of industrial electrical control systems, including AC/DC circuits, relays, contactors, motor starters (DOL/reversing), analogue/digital I/O, protection devices, residual current protection (RCD/RCCB), and fail-safe control principles.
• Utilize working knowledge of electrical fault-finding, circuit theory, and industrial troubleshooting techniques to support PLC software development, testing, and commissioning.

Requirements

• Minimum 3 years' experience developing Siemens PLC and SCADA software.
• Strong written and verbal English communication skills.
• Experience supporting FAT and remote commissioning.
• Experience interpreting electrical drawings and troubleshooting industrial control systems in collaboration with electrical and commissioning engineers.

Skills

• Siemens TIA Portal V21
• STEP 7 Professional
• Siemens S7-1200 and S7-1500 PLCs
• WinCC Professional and/or WinCC Unified
• Ladder Logic (LAD)
• Function Block Diagram (FBD)
• Structured Control Language (SCL)
• Profinet
• Modbus TCP
• PLC diagnostics and troubleshooting
• BACnet/IP
• OPC UA
• Siemens ET200 Remote I/O
• SINAMICS StartDrive
• Building Management Systems (BMS)
• HVAC automation experience

Experience Level

• Minimum 3 years' experience

Education Level

• Bachelor's Degree in Electrical, Electronics, Mechatronics, Computer or Instrumentation Engineering, or equivalent.