Jr Java Developer: find the bug and explain the solution

TransWay Logistics is a leading U.S. provider of logistics solutions, known for its advanced shipment-tracking software that monitors over a million shipments daily. The company’s technology stack includes Java for backend development, PostgreSQL for databases, and Docker for deployment, ensuring high reliability and scalability. TransWay stands out in a competitive market by prioritizing rapid incident resolution and continuous improvement, maintaining high customer satisfaction and system uptime. The engineering team is central to this success, quickly addressing technical issues to protect the company’s reputation and deliver dependable service.

Step into the role of a Junior Java Developer at TransWay Logistics and tackle a real-world production incident affecting the company’s shipment-tracking service. Your mission begins with reviewing and debugging a Java source file in the simulation editor, where you must identify and fix logic errors that are disrupting shipment data accuracy. Once your corrections are made, you will have a one-on-one voice call with the Engineering Manager responsible for the service. In this conversation, you’ll clearly explain the root causes of the issues, the changes you implemented, and suggest practical measures to prevent similar problems in the future. Your ability to translate technical solutions into clear, business-focused language will be key to success.

• Accurately identify and fix all logic errors in the Java code using the simulation editor.
• Clearly explain your debugging process, code changes, and preventive recommendations to the Engineering Manager during a voice call.
• Demonstrate strong technical communication skills and practical problem-solving abilities.