USF2000

In October 2017, Lindh partook in the USF2000 category of the Chris Griffis Memorial Test with Team BENIK.^[7] Three months later, it was confirmed Lindh would make his single-seater debut in the 2018 season with Pabst Racing Services.^[8] Despite coming away without a win, Lindh achieved three pole positions and five podiums to finish as vice-champion to Kyle Kirkwood.

Pro Mazda/Indy Pro 2000

In September 2018, Lindh partook in the Pro Mazda category of the Chris Griffis Memorial Test with Juncos Racing.^[9] In February 2019, it was announced Lindh would race with Juncos in the newly re-branded Indy Pro 2000 Championship.^[10] In the first race at the Indianapolis GP, Lindh claimed his maiden single-seater win after starting from pole position.^[11] He achieved one final victory in the second race at Laguna Seca and once again finished as championship runner-up to Kirkwood.^[12]

Indy Lights

In October 2019, Lindh was named as one of Andretti Autosport's entrants in the Chris Griffis Memorial test.^[13] Two months later, Lindh joined HMD Motorsports for the second test at Sebring, setting the fastest time of the test.^[14] In March 2020, it was announced Lindh would partake in the Spring Training session at Homestead with Belardi Auto Racing who subsequently named him as their first driver signing for the 2020 season, which would subsequently be cancelled due to the COVID-19 pandemic.^[15][16] On September 8, 2021, it was reported on the RACER web site that Lindh had rejoined Juncos Hollinger Racing for rest of the 2021 Indy Lights season.^[2]

Lindh will return to Indy Lights, rebranded as Indy NXT, in 2023 with a full-time seat at HMD Motorsports in the #10 car sponsored by GarageXYZ.^[1]