Biller joined the Big Green staff in October 2022 as an assistant coach to work with the infielders and assist the hitters. The 2026 campaign will be his fourth year on the staff.
From the 2024 to 2025 season, multiple Big Green hitters improved under Biller. Taer Rodriguez led the Big Green with a .336 batting average, riding a 16-game hitting streak that saw his average surpass .360, sitting atop the Ivy League. Camden Rush also had a breakout season, improving his average by 122 points. He doubled his hit total and had four extra base hits, two doubles and two home runs, finishing the season with 21 RBI, the second most on the team. Defensively, the Big Green improved their fielding percentage by 21 points. On the infield, Rodriguez's fielding percentage improved from a .911 to a .938, Rush's a .906 to a .973, and Elliot Krewson's from a .914 to a .984.
During the previous year and a half before his hiring, Biller played professionally overseas in France for Rouen and Belgium for Mont-Saint-Guibert while also maintaining coaching responsibilities for developmental and academy teams in those areas. Between the 2021 and 2022 seasons, he worked with Driveline Baseball in Washington state, delving into hitting assessment, analytics and training. Additionally, Biller pitched in as an assistant coach for the French National Team in September 2021.
Biller cut his teeth in the coaching ranks as an assistant for the Junction City Brigade in the Mid-Plains Summer Collegiate Baseball League in 2019. From there he joined the staff at Cloud County Community College in Concordia, Kansas, as the hitting and infield coach, a role he replicated the following year at Fort Scott (Kan.) Community College where he began his collegiate playing career.
As a player, Biller hit .303 with 16 homers, 69 runs and 59 RBIs in his sophomore season at Fort Scott, earning the school’s Male Student-Athlete of the Year award and NJCAA Academic All-America First Team honors with a 4.0 GPA. He went on to finish his collegiate career at Kansas State where he was the recipient of the Dr. Gerald Lage Academic Achievement Award, the highest academic honor in the Big 12 Conference (one of four for baseball in the league).
Biller, who graduated from Kansas State summa cum laude (4.0) in 2019Â with a degree in kinesiology and a minor in nutrition, was also named to the CoSIDA Academic All-District Team and the Academic All-Big12 First Team, both in 2018.