Gigaparsec Series by Scott Rhine

Max Culp escaped his low-tech home world by serving in the marines as a medic. Unable to adapt to civilian life as a medical intern, he joined Special Forces to track down the Phib war criminals who caused his recurring nightmares. By the time the final Phib is captured, Max has become an urban legend among the aliens. He isn’t sure how to apply those skills to a new life until someone kidnaps his last surviving friend... moreMax Culp escaped his low-tech home world by serving in the marines as a medic. Unable to adapt to civilian life as a medical intern, he joined Special Forces to track down the Phib war criminals who caused his recurring nightmares. By the time the final Phib is captured, Max has become an urban legend among the aliens. He isn’t sure how to apply those skills to a new life until someone kidnaps his last surviving friend.This series continues the story of humanity’s expansion into galactic space 400 years after the Jezebel’s Ladder series left off. Fans of Heinlein, Star Wars, and Babylon 5 should enjoy this action-filled quest to other planets. less

Reuben Black Ram has been a hacker for Special Forces, a DJ for pirate radio, and a real pirate who hotwires spaceships. The richest Goat in the galaxy, he is being asked to give up everything to save a race of alien mimics and his Human girlfriend. To accomplish this, he must cross Union space to reach the Convocation of Souls. The space battles, spies, and dangerously experimental tech don’t bother him as much as what MI-23 expects of him—to grow up and become a world leader... moreReuben Black Ram has been a hacker for Special Forces, a DJ for pirate radio, and a real pirate who hotwires spaceships. The richest Goat in the galaxy, he is being asked to give up everything to save a race of alien mimics and his Human girlfriend. To accomplish this, he must cross Union space to reach the Convocation of Souls. The space battles, spies, and dangerously experimental tech don’t bother him as much as what MI-23 expects of him—to grow up and become a world leader. Reuben still has a few tricks up his bulletproof sleeves, including a psi talent that up until now has only made him an object of ridicule. less