Fabricate and repair jewelry articles. They make models or molds to create jewelry items.

Perform engineering duties in designing, constructing, and testing aircraft, missiles, and spacecraft. They conduct basic and applied research to evaluate adaptability of materials and equipment to aircraft design and manufacture. They recommend improvements in testing equipment and techniques.

Design and develop solutions to complex applications problems, system administration issues, or network concerns. They perform systems management and integration functions.

Design and implement computer and information networks, such as local area networks, wide area networks, intranets or extranets. They perform network modeling, analysis, and planning. They design network and computer security measures. They research and recommend network and data communications hardware and software.

Design, create, and modify web sites. They analyze user needs to implement web site content, graphics, performance, and capacity. They integrate web sites with other computer applications. They convert written, graphic, audio, and video components to compatible web formats by using software designed to facilitate the creation of web and multimedia content.