The Illumination (The New World #1) by Asher D Payne:
 
After the Fall, the last remnants of humanity cling to the illusion of safety the fortified walls cast. The world beyond is a wasteland deemed unsafe by government officials, and overrun by the infected—Runners, Rebels and Scavengers—the results of failed experimentation and burning opposition.

As a Venturer, Astrid is one of the few wearing the badge of protection, daring to face the dangers of the Wilds on missions sanctioned by authorities. Delving further into their webs of secrecy, she begins to question the intentions of those in power.

When Astrid crosses paths with the Most Wanted power user, a man whose name sparks rebellion, the fragile lines between enemy and ally blur. To protect those she loves, Astrid may have to confront not only the horrors of the Wilds, but the shadows of her own secrets, and the man who holds the key to unraveling them.