Arno, formerly known as Einzelkind, made his debut in the House & Techno scene in 2006 with releases on esteemed labels such as Playhouse, Raum…musik, and the influential Berlin-based Get Physical / Kindisch. In 2007, he established his own imprint, La Peña, followed by Jax Records in 2010, where he continued to refine his groove-driven sound.

In 2012, Arno, alongside his longtime friend Frost, founded Pressure Traxx, marking the beginning of a beloved imprint known for its unique blend of tripped-out, idiosyncratic, and raw dance floor music. Over the past decade, Pressure Traxx has showcased iconic tracks from artists like Suciu, Dan Andrei, Nail, Transparent Sound, and memorable collaborations including releases with Ricardo Villalobos. The label's distinctive artwork by Aoki & Matsumoto has solidified its status as an iconic presence in the House & Techno scene.

Arno's collaborative efforts extend beyond Pressure Traxx, including projects like Rhythm Factory with Robin Scholz for Oskar Offermann's WHITE label, and Implosive Inc Project with Randy Fox, deeply rooted in the US House and Techno sound. His success with Pressure Traxx led to a partnership with the Cocoon Booking Agency, elevating his DJ career and enabling him to perform at events worldwide.

In 2019, Arno embraced a new chapter by shedding his alias and releasing music under his own name. He has since unveiled releases on respected labels such as Dana Ruh's Broquade, London's Half Baked, Cabanne's Polyson, and Elision. Additionally, Arno continues to operate Pressure Traxx and collaborates with Simon Birkenfeld as one half of the duo Hot City Orchestra, releasing music via their label, Internet Is Over.

As a DJ, Arno holds a residency at Frankfurt's revered club space, Robert Johnson, and has been a fixture at various hotspots in Berlin. Over the years, he has traveled the globe, sharing his passion for music with audiences worldwide.

In 2024, Arno embarks on a new venture with the launch of a vinyl series titled ARNO. This series will serve as a platform for releasing his own music alongside collaborations with other producers. With ARNO, he continues to push boundaries and explore new creative avenues within the electronic music landscape.