[2] After he started writing in 1987, he sold his first short story to Fear Magazine in 1988.

[1] His first novel, Mindstar Rising, was published during 1993, followed by A Quantum Murder (1994) and The Nano Flower (1995), which together comprise the Greg Mandel trilogy.

[2] He then wrote a space opera novel, named The Night's Dawn Trilogy.

He has also published the Commonwealth Saga with the Void Trilogy and The Chronicle of the Fallers in the same universe.

[3] Since 2018, he has written the unrelated space opera Salvation Sequence, and young adult sci-fi Arkship Trilogy, set in original universes.