The Concordia Deception - J J Green - Bog

Facing the enemy at the gates
All her life Cariad had one dream: to participate in humanity’s colonization of deep space. After topping her field as a geneticist, and then spending 184 years in cryonic suspension, she’s achieved her goal.
But the new planet is not the paradise the scientists predicted. Alien predators come out at night, ready to feast on the new arrivals. What’s more, saboteurs have stowed away aboard the ship and are determined to destroy the new colony.
To defeat the settlers’ enemies, Cariad must enlist the help of the disgruntled Gens, last in the line of generational colonists who lived and died on the long journey to the stars, and who hate the Woken scientists.
Infighting and strife plague Cariad’s efforts. If the colony’s factions don’t pull together, the flame of hope for humanity will be snuffed out.