PLC/SCADA Software Engineer

Heidi Chef Solutions LLC; Hinoba-an; On-site; PHP 600,000 - 900,000; Full time

Job summary

Heidi Chef Solutions LLC in Quezon City seeks a PLC/SCADA software engineer to develop and maintain Siemens applications using TIA Portal, S7-1200/1500 PLCs and WinCC SCADA. You will review design specs and ensure well-documented, modular code, while supporting FAT remotely and during commissioning.

Requirements include a engineering degree and 3+ years in Siemens PLC/SCADA, plus strong English communication and schematic-reading skills for effective collaboration with project teams.

Qualifications

• Bachelor's Degree in Electrical, Electronics, Mechatronics, Computer or Instrumentation Engineering, or equivalent.
• Minimum 3 years' experience developing Siemens PLC and SCADA software.
• Technical skills include STEP 7 Professional, S7-1200/1500 PLCs, WinCC, LAD, FBD, SCL, Profinet, Modbus TCP.
• Experience with PLC diagnostics, BACnet/IP, OPC UA, SINAMICS StartDrive and FAT support.

Responsibilities

• Develop PLC applications using Siemens TIA Portal and WinCC SCADA.
• Configure and modify S7-1200/1500 PLC programs and HMI/SCADA apps.
• Review FDS/SOO, I/O schedules; ensure modular, documented PLC software.
• Support FAT remotely and during commissioning; maintain version control.

Skills

English communication

Reading schematics

Education

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

Tools

STEP 7 Professional

Siemens S7-1200

Siemens S7-1500

WinCC Professional/Unified

Ladder Logic

FBD

Structured Control Language (SCL)

Profinet

Modbus TCP

PLC diagnostics

BACnet/IP

OPC UA

SINAMICS StartDrive

Building Management Systems

FAT support

Remote commissioning

Job description

Quezon City CPO, Philippines | Posted on 08/14/2026

The position isresponsible for developing, modifying, testing, and maintaining industrialautomation software using Siemens technologies. The role is primarily focused on software development and remote engineering support using Siemens TIA PortalV21, Siemens S7 PLCs and WinCC SCADA/HMI platforms. This position does notinclude electrical design, panel design or site installation responsibilities.

Work Overview

• Develop PLC application software using Siemens TIA PortalV21.
  
• Develop and maintain Siemens S7-1200 and S7-1500 PLCprograms.
  
• Develop, configure and modify WinCC HMI/SCADA applications.
  
• Review Functional Design Specifications (FDS), Sequence ofOperations (SOO), Cause & Effect matrices and I/O schedules beforedevelopment.
  
• Develop modular, reusable and well-documented PLC software.
  
• Perform offline software testing using PLCSIM whereapplicable.
  
• Support Factory Acceptance Testing (FAT) remotely.
  
• Provide remote software support during commissioning andtroubleshooting.
  
• Maintain software version control, backups and revisionhistory.
  
• Prepare software documentation, testing records and changelogs.
  
• Collaborate with project managers, controls engineers andcommissioning teams.
  
• Ability to read and interpret electrical schematics, controlpanel drawings, wiring diagrams, P&IDs and I/O schedules.
  
• 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.
  
• Workingknowledge of electrical fault-finding, circuit theory, and industrialtroubleshooting techniques to support PLC software development, testing andcommissioning.
  

Requirements

Qualifications and Education Requirement

• Bachelor's Degree inElectrical, Electronics, Mechatronics, Computer or Instrumentation Engineering,or equivalent.
  
• Minimum 3 years' experiencedeveloping Siemens PLC and SCADA software.
  
• Technical Skills (Mandatory)
  
• 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
  
• SINAMICS StartDrive
  
• Building Management Systems(BMS)
  
• Experience supporting FAT andremote commissioning.
  
• Experience interpretingelectrical drawings and troubleshooting industrial control systems incollaboration with electrical and commissioning engineers.
  
• Strong written and verbalEnglish communication skills.