A Delphi developer designs, develops, and maintains applications using the Delphi programming language. They create software solutions that meet client requirements, debug and resolve software defects, and optimize code for performance. They also conduct system analysis, create technical specifications, and collaborate with other team members. Additionally, they may provide user support, document software functionalities, and participate in testing processes. A Delphi developer often works with databases, so they should be familiar with SQL. They must also keep up-to-date with the latest technology trends and programming techniques to ensure the applications they develop are current and efficient.