He played the entire 2008 season with the Class A West Virginia Power, where in 137 games, he hit .307 with 13 HR, 81 RBI, 38 doubles, 86 runs and 14 SB, and was again a Post-Season All-Star.

After the season, he played for the West Oahu CaneFires of Hawaii Winter Baseball, where he hit .281 with 3 HR and 18 RBI in 25 games.

In 2009, he was promoted to the Class A-Advanced Brevard County Manatees, where in 112 games, he hit .277 with 17 HR, 71 RBI and 18 SB, and he was a Mid and Post-Season All-Star.

Gindl spent the entire 2010 season with the Double-A Huntsville Stars, where in 128 games, he hit .272 with 9 HR, 60 RBI and 33 doubles.

After the season, he played for Surprise in the Arizona Fall League, where in 16 games, he hit .259 with 2 HR, 6 RBI and 11 runs, and he was named an AFL Rising Star, along with fellow Brewer Jeremy Jeffress.

On July 21, Gindl hit his first career home run, a walk-off homer in the bottom of the 13th inning to seal a 1–0 win against the Miami Marlins.

[10] Gindl split the 2018 season between the Double–A Richmond Flying Squirrels and Triple–A Sacramento River Cats, accumulating a .299/.369/.417 batting line with three home runs and 34 RBI.

[12] On June 29, Gindl set a Barnstormers franchise record by homering in seven straight games, breaking a mark previously held by Ryan Harvey.