ABB PLC/HMI Logic Modification

I need an experienced ABB PLC/HMI programmer to modify existing logic on my system.

Requirements:
- Modify existing logic
- Change control sequences
- Introduce more blocks on PLC HMI

Documentation available:
- Wiring diagrams
- Existing code
- Process flowcharts

Ideal Skills and Experience:
- Proficiency in ABB PLC and HMI programming
- Strong understanding of control sequences
- Ability to interpret wiring diagrams and process flowcharts
- Experience in modifying existing logic and introducing new blocks

Please provide relevant experience and approach in your bids.