An ImageMagick developer uses the ImageMagick software suite to create, edit, and compose bitmap images in various formats. They manipulate images (resize, flip, mirror, rotate, distort, shear and transform), adjust image colors, apply various effects, or draw text, lines, polygons, ellipses and Bézier curves. They also work with transparency, image animations, and much more. Developers can work directly with the suite's tools or use its APIs for additional flexibility. The suite supports multiple languages, including Perl, C++, and Java, so developers must be proficient in at least one of these languages. They also need to understand image processing techniques.