Description

Design, debug, and commission Siemens PLC logic and SCADA systems for industrial automation projects.

This role is on-site.

Responsibilities

• Develop and debug complex PLC code using TIA Portal or Step 7 Classic, writing logic in Ladder Logic (LAD), Function Block Diagram (FBD), and Structured Control Language (SCL).
• Configure Siemens hardware (S7-1200, S7-1500, S7-300, ET 200) and create reusable Function Blocks (FBs) and Data Blocks (DBs) for standardized project execution.
• Design SCADA systems and HMI interfaces using WinCC Professional, WinCC V7.x, or WinCC Unified, including graphics, alarms, trends, and scripting with C-Script, VBScript, or JavaScript.
• Establish communication between PLCs, HMIs, and drives using PROFINET, PROFIBUS, and Modbus TCP/RTU, and configure SINAMICS VFDs via Start drive.
• Validate logic using PLCSIM and PLCSIM Advanced, perform on-site commissioning including I/O checking and PID tuning, and maintain detailed as-built documentation.

Required Skills

• 5+ years of experience in PLC programming and industrial automation.
• Proficiency in Siemens TIA Portal, Step 7 Classic, S7-1200, S7-1500, S7-300, and ET 200 systems.
• Strong knowledge of IEC 61131-3 languages, primarily Ladder Logic, FBD, and SCL.
• Experience designing SCADA/HMI screens using WinCC Professional, WinCC V7.x, or WinCC Unified.
• Ability to script in VBScript, C-Script, or JavaScript for dynamic UI elements and background tasks.
• Familiarity with industrial protocols including PROFINET, PROFIBUS, and Modbus TCP/RTU.
• Experience with SINAMICS VFD configuration and PLCSIM/PLCSIM Advanced simulation.

Preferred Skills

• Experience interfacing SCADA systems with SQL databases or higher-level MES/ERP systems.
• Strong problem-solving and analytical thinking skills with the ability to troubleshoot electrical panels.

Key Skills

Education

Bachelor's degree