Mas Putra Zenno J., intimately known as Zenno, Managing Partner the MAS Lawyers. Over the years, Zenno has advised many clients on various company matters, including company establishment, cooperation agreements, licensing arrangements and corporate secretarial matters. He has also advised clients on a variety of matters concerning labor law and industrial relations. Meanwhile, his extensive experience in the fields of labor law and industrial relations, as well as Criminal Law includes mass layoffs, good relations with Workers Unions / Labor Organizations, and Arranging Compensation and Benefits for Workers, as well as cases of embezzlement and corruption.

In addition, Zenno has advised clients from various industries, F&B, Hotel, Medical, Toy Industry and Trade, Automotive, Garment and Textile Industry, and Bottled Water Industry. His articles on Criminal Law, especially on Deferred of Prosecution Agreements for corporations, have been published in reputable international journals. He has also been a speaker at various law seminars in Indonesia and internationally and is currently a lecturer at the Bandung Law School.