The Farthest Star by A.R. Knight

In the far future, a dormant android awakes on a vast starship to find humanity’s last hopes rest with him.

Launched to carry the human species across the galaxy, Starship’s generations-long journey has crumbled as machines took everything from their human creators, including life itself. Given a mission by humanity’s last digital remnants, Gamma must traverse Starship’s vast, dangerous bulk in search of a way to preserve Starship’s original purpose.

Yet Gamma isn’t the only intelligent machine on Starship, and some want a very different end as the spacecraft approaches its final destination. As he confronts the mechs that’ve claimed Starship as their own, the key to Gamma’s survival will come not only from his metal fists, but from figuring out why Starship’s humans fell in the first place.