Senior Software Engineer (PLC & Automation)

FA SYSTEMS AUTOMATION (S) PTE LTD; Singapore; On-site; SGD 60,000 - 90,000; Full time

Job summary

FA SYSTEMS AUTOMATION (S) PTE LTD is seeking a skilled PLC engineer to configure, install, test, commission, and buy-off automation systems on-site in Singapore. You will work with Omron and Keyence PLCs and apply IEC 61131-3 languages.

You will design robust industrial communications, integrate PLCs with MES/ERP via REST APIs, and collaborate with cross-functional teams to deliver projects from development through customer acceptance.

Qualifications

• Experience with IEC 61131-3 languages in industrial automation.
• On-site installation, testing, commissioning and buy-off of automation systems.
• Knowledge of semiconductor manufacturing process applications.

Responsibilities

• Configure, set up, and support on-site installation, testing, commissioning, and buy-off of PLC and automation systems.
• Develop, maintain, and optimize PLC programs using IEC 61131-3 languages (LD, FBD, ST, IL).
• Perform system troubleshooting, debugging, optimization and performance tuning to meet project requirements.
• Design reliable communication between PLCs and external devices using RS232, TCP/IP, Modbus, EtherCAT, SECS/GEM.
• Develop software integration solutions using REST APIs, SOAP, XML for MES/ERP communication.
• Collaborate with cross-functional teams to resolve issues and support project execution.

Skills

PLC programming

Troubleshooting

System integration

Collaboration

Tools

Omron PLC

Keyence PLC

Modbus

EtherCAT

Job description

Configure, set up, and support on-site installation, testing, commissioning, and buy-off of PLC and automation systems.

Develop, maintain, and optimize PLC programs (e.g. Omron, Keyence) using IEC 61131-3 programming languages, including Ladder Diagram (LD), Function Block Diagram (FBD), Structured Text (ST), and Statement List (IL).

Perform system troubleshooting, debugging, optimization, and performance tuning to ensure project requirements are met, including application of semiconductor manufacturing process knowledge.

Design reliable communication between PLCs and external devices using industrial communication protocols such as RS232, TCP/IP, Modbus, EtherCAT, and SECS/GEM.

Develop software integration solutions using web services (REST APIs, SOAP, XML) to enable communication between PLCs, MES, ERP, and other Industry 4.0 manufacturing systems.

Apply advanced PLC programming concepts, including reusable function blocks, structured program architecture, task management, and scan-time optimization to improve system reliability and maintainability.

Collaborate with cross-functional teams to resolve technical issues and support successful project execution from development through customer acceptance.