PLC Programming for Assembly Line Automation

I'm seeking an experienced PLC programmer to replace and update existing code for automating our manufacturing process, specifically focusing on assembly line control.

Key Requirements:
- Update and replace existing PLC code
- Automate assembly line control operations
- Ensure improved efficiency and reliability

Ideal Skills:
- Proficiency in Automation Direct PLC programming
- Strong background in manufacturing automation
- Experience in code replacement and system updates
- Problem-solving skills and attention to detail

Please provide examples of similar work done and relevant certifications.