The System Application Engineer I at Schneider Electric is responsible for providing hands-on support to customers in the field, focusing on troubleshooting and repairing systems. This role involves collaborating with project managers and other stakeholders to ensure project documentation is accurate and up-to-date, while also participating in field startups and contributing to successful project closeouts. The position is based in Lyndhurst, New Jersey, and requires a proactive approach to customer service and technical problem-solving.