12 in-demand writing careers 1 Grant writer. What they do: Research and complete grant applications to help organizations—often non-profits—get funding to support and carry out their mission. ... 2 Speech writer. ... 3 Content writer. ... 4 Copywriter. ... 5 Technical writer. ... 6 Editor. ... 7 Medical writer. ... 8 Ghostwriter. More items... Jun 2, 2022