Eden Vertex. The Dominus Trilogy, #1

From his morally superior perch, life is great for Cal Dormer. Cal is a model employee with Fenix Corporation. From his office on Eridia-4, the central space station of Fenix's operations, he works to convince new Coalition planets to accept the corporation's assistance. But when he meets a non-human with a strange motivation to bring Fenix down, he's thrown into a chaotic sequence of events that begin to unravel his beliefs bit by bit.
From the sparkling spires of Eridia-4 to the lush gardens of Eden, Cal and his companion uncover a secret so shocking that inaction would doom entire worlds.