Industrial Automation PLC Programmer

2 days ago

Coimbatore, India Thoughtmakes Technologies Full time

Job Description

We are seeking a PLC Programmer with hands-on experience in Siemens, Mitsubishi, and Allen Bradley PLCs, as well as HMI, SCADA, and DCS systems. The role involves developing, testing, and commissioning industrial automation solutions by integrating diverse machines, sensors, and tools used in manufacturing environments.

Candidates with proven ability to reverse engineer existing PLC/HMI code, troubleshoot legacy systems, optimize performance, and implement enhancements will be given strong preference. Exposure to Industry 4.0, IIoT, and smart manufacturing systems will be an added advantage.

Key Responsibilities

  • Program, configure, and troubleshoot PLC systems (Siemens, Mitsubishi, Allen Bradley).
  • Reverse engineer legacy PLC/HMI programs, analyze logic, and implement modifications or upgrades.
  • Design and develop HMI screens, SCADA dashboards, and DCS configurations.
  • Integrate automation systems with sensors, actuators, CNC/Robotic machines, drives, and field devices.
  • Conduct FAT (Factory Acceptance Test), SAT (Site Acceptance Test), and on-site commissioning.
  • Implement control logic, safety interlocks, and process automation flows.
  • Collaborate with mechanical, electrical, and IT teams for seamless system integration.
  • Maintain technical documentation including I/O lists, wiring diagrams, reverse-engineered code, and updated system architecture.
  • Support Industry 4.0 initiatives such as IoT gateways, data acquisition, predictive maintenance, and MES/ERP integration.

Required Skills

  • Strong knowledge of PLC programming (Ladder Logic, Function Block, Structured Text).
  • Hands-on with Siemens TIA Portal, Mitsubishi GX Works, Rockwell Studio 5000.
  • Ability to read, analyze, and enhance existing PLC/HMI code from legacy or undocumented systems.
  • Experience with HMI development (WinCC, FactoryTalk, GT Designer, etc.).
  • Familiarity with SCADA systems (WinCC, Wonderware, iFIX, Indusoft).
  • Knowledge of DCS systems (Siemens PCS7, ABB, Honeywell preferred).
  • Working with communication protocols: Modbus, Profibus, Profinet, Ethernet/IP, OPC UA.
  • Exposure to IIoT platforms, MQTT, edge devices, and cloud integration.
  • Strong debugging skills and ability to work on electrical schematics and control panels.

Desired Experience

  • 1 to 5 years in Industrial Automation / Control Systems.
  • On-site installation & commissioning experience in manufacturing plants.
  • Experience in reverse engineering and upgrading PLC/HMI/SCADA systems.
  • Industry background: Automotive, FMCG, Process Industries, Machine Tools, or Packaging.

Education

  • B.E / B.Tech / Diploma in Electrical, Electronics, Instrumentation, or Automation Engineering.

What We Offer

  • Exposure to cutting-edge Industry 4.0 and Smart Factory projects.
  • Hands-on experience with latest PLCs, SCADA, and IIoT platforms.
  • Opportunity to work with global clients & advanced manufacturing setups.
  • Competitive compensation with performance-based incentives.

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