With an equal footing in North America and Europe, Reif has conducted the symphony orchestras of San Francisco, Baltimore, Dallas, Houston, St. Louis, Cincinnati, Milwaukee, Indianapolis, and Kansas City, St. Paul Chamber Orchestra and Orchestra of St. Luke’s. Previous season highlights include appearances with the Los Angeles Philharmonic, Detroit Symphony, SWR Symphony, and Royal Northern Sinfonia. In Europe, he has performed repeatedly with Orchestre National de Lyon, Royal Scottish National Orchestra, Münchner Rundfunkorchester, Hallé Orchestra and Stavanger Symphony. 

 Reif enjoys conducting opera and has led productions at the Music Academy of the West of Don Giovanni, Juilliard Opera of The Merry Wives of Windsor, Opera San Jose of Leoncavallo’s Pagliacci and the Lakes Area Music Festival of Ariadne auf Naxos, The Rake’s Progress, and Hansel and Gretel. 

 In 2023, Reif won a GRAMMY® for the Nonesuch Records album Walking in the Dark, the debut solo album of classical singer Julia Bullock in which he accompanied her on piano and led London's Philharmonia Orchestra. The album was praised by Gramophone Magazine as “illuminating” and described Reif as providing “excellent support” for Bullock. In 2020 during the pandemic, Reif and Bullock recorded a series of at-home virtual “Songs of Comfort”, ranging from Carole King’s classic “Up on the Roof” to Schubert’s Wanderers Nachtlied. NPR Music featured the duo in a “Tiny Desk Concert” for their special quarantine edition of the series, and The New York Times highlighted them on their “Best Classical Music of 2020” list. 

 From 2016 to 2019, Christian was Resident Conductor of the San Francisco Symphony and Music Director of the San Francisco Symphony Youth Orchestra, after being the Conducting Fellow at the New World Symphony from 2014 to 2016 and at Tanglewood Music Center in 2015 and 2016. He studied conducting at the Mozarteum in Salzburg and at The Juilliard School in New York City. He resides in Munich with his wife Julia Bullock and their son.