Nierlich transitions to private practice with a career defined by two decades of antitrust work, including a recent stint overseeing complex government investigations. At the DOJ, he directed enforcement efforts across industries ranging from healthcare to aerospace, with a specific mandate focused on digital platforms. His background includes serving as Acting Director of Civil Enforcement for mergers, providing him with a unique vantage point on how federal authorities build and litigate cases.

Debevoise leadership expects Nierlich to bridge the gap between regulatory enforcement and corporate strategy. Presiding Partner Peter Furci noted that clients require counsel capable of navigating an increasingly aggressive oversight environment. Nierlich, a 1997 Harvard Law School graduate, previously spent thirteen years as an antitrust partner at an international firm before his government service. His addition signals the firm's intent to command a larger share of the market for high-profile antitrust defense.