Very clearly influenced by Ringo's Troy Rising trilogy.
However, Megastructure lacks Troy's technical, scientific, and military details. In fact, there seems to be some hand waving where the science is concerned and Frater played fast and loose with the military bits. Chain of command, weapons usage, strategies and tactics. Frater's lack of military experience shows in the narrative and plot. He very clearly inserted himself into the story as the main character.
But. It was a fun read, again, very reminiscent of Troy Rising (minus the technical details and some accuracy).
My biggest gripe was honestly the number of errors, not just typos, missing words, and extra words (repeated words, for example), but editorial notes left in the text, missing quotation marks, and so on. The editing and proofreading were sloppy for this one.