Siemens PLC Programming Support

I need an experienced Siemens specialist to review, modify, and extend the PLC logic on an active production line. All programming will be done in TIA Portal, and the work includes: • Analysing the current STEP 7 code to spot inefficiencies or faults... (Budget: $10 - $30 USD, Jobs: Change Management, Project Management, Technical Documentation, Technical Support, Troubleshooting)