Freelance Siemens S7-1200 PLC Automation Engineer Required | Scientific & Special-Purpose Equipment

We are looking for an experienced freelance industrial automation engineer to support the development and implementation of PLC control software for a special-purpose scientific/laboratory equipment system.

The equipment involves a controlled, multi-stage process with vacuum, gas flow, pressure, power, temperature, utility monitoring, and other process parameters.

We are looking for someone capable of developing a structured, reliable, and maintainable PLC application, rather than simply programming basic machine I/O and sequencing.

Mandatory Requirements
Location
The freelancer must be physically located in the Mumbai suburban area and be available for in office work when required.

This may include in-person meetings, hardware testing, integration, calibration, troubleshooting, and commissioning support.

Remote-only applicants or freelancers located outside Mumbai suburbs will not be considered.

Confidentiality & NDA




The selected freelancer will be required to sign a Non-Disclosure Agreement (NDA) before receiving access to detailed technical documentation, process information, software architecture, communication details, or other confidential project materials.

Only freelancers willing to sign the NDA should apply.

Scope of Work
The selected engineer will work with the following hardware:
Siemens SIMATIC S7-1200 CPU 1212C G2
Siemens SM1231 Analog Input module
Siemens SM1222 Digital Output module
Siemens CM1241 RS485 communication module
TIA Portal

The PLC software should follow a modular, structured, and scalable architecture.
Process Sequence / State Machine
Develop a structured, recipe-driven process sequence covering multiple stages, including:
• Pre-start and system readiness checks
• Vacuum/process preparation stages
• Optional pressure conditioning cycles
• Process initiation and verification
• Controlled multi-parameter ramp-up
• Process stabilizatio

📌 Senior Freelance Siemens-1200 PLC Automation Engineer (Goregaon)
🏢 Stanzekiel Software (P
📍 Goregaon