His legal practice focused on complex civil litigation and federal criminal issues.

[5][6][7] On August 3, 2017, President Donald Trump nominated Peeler to become the United States Attorney for the Middle District of Georgia.

On November 9, 2017, his nomination was confirmed by voice vote in the United States Senate.

During his tenure as U.S. Attorney, Peeler's office prosecuted crimes including federal firearms charges, fraudulent tax returns, drug distribution, and bank robbery.

[8][9] Peeler resigned on December 11, 2020, and joined the national law firm Troutman Pepper in January 2021, becoming a managing partner.