Confluence Trilogy by Paul J. McAuley (Books #1 to #3) epub mobi

Child of the River (Confluence Book #1)
On the world of Confluence, where thousands of bloodlines compete for position in a society abandoned by its creators, the mysterious appearance of a youth of indeterminable heritage portends either the world's end or a new beginning. Yama's search for his origins leads him from the faded necropolis of Aeolis to the fabled metropolis of Ys, bringing him closer to the secret of his past while simultaneously plunging him into the midst of a convoluted war of politics and religion.

Ancients of Days (Confluence Book #2)
Yama continues his quest for identity, still pursued by the implacable Prefect Corin of the Department of Indigenous Affairs, who would subvert Yama's burgeoning psychic powers and put them to use in the war against the Heretics. Confluence is a planet-sized, needle-shaped artificial environment set millions of years in the future by the Preservers, humanity's distant descendants, to orbit a star. Nearby is the Eye of the Preservers, a massive black hole within which the galaxy's remaining humans have evidently hidden themselves, for reasons unknown. The inhabitants of Confluence, the 10,000 bloodlines, are, apparently without exception, animals, some of earthly origin and others not, all genetically engineered for human intelligence and form. Yama, an orphan of mysterious parentage, is a Builder, a member of a bloodline thought long extinct. His desire to uncover the mystery behind his birth is the motivating force for both his quest and the series. Throughout, he is opposed not just by Prefect Corin but by other intelligent beings, both organic and inorganic, who would bend him to their will.

Shrine of Stars (Confluence Book #3)
Captured by his archenemy, Dr. Dismas, the remarkable young man known as Yama fights a dual battle against an internal and an external enemy in order to achieve his true destiny.