The practice of Luis Mancera de Arrigunaga encompasses an ample expertise in the areas of telecommunications, competition and financial regulatory affairs, administrative constitutional and government budget law, banking, securities and anti-trust transactions, as well as in corporate finance.

From 2005 to 2008, Mr. Mancera served as Federal Attorney General for Tax Matters and General Counsel to the Ministry of Finance and Public Credit (Procurador Fiscal de la Federación), where he advised the Federal Public Administration on constitutional, administrative, tax, budgetary, financial and public debt law matters.  His responsibilities also included representing the Federal Administration in amparo proceedings filed against the Executive and Congress with respect to federal tax laws, as well as providing advice on subjects related to public finances, tax fraud, contraband, money laundering, and the proposal of financial legislation and decrees. In this capacity he interacted with the Justices of the Supreme Court, Magistrates of the Fiscal Courts, the presidents of the House of Representatives and Senate as well as many congressmen and different party officials. 

From 2002 to 2004, he headed the Banking and Savings Unit of the Ministry of Finance and Public Credit, where he acquired ample experience on financial regulation.  From 1997 to 2002, he served as Chief Executive Legal Officer for Regulatory and Legal Affairs of Avantel, advising the company on telecommunications, competition, administrative, financial and corporate law, as well as constitutional, amparo and administrative litigation matters.

From 1995 to 1997, Mr. Mancera worked as Deputy Legal Counsel to the President providing legal advice to the President and the executive branch, with respect to legislative bills, regulations and decrees.

As an expert in the laws and regulation of financial entities, Mr. Mancera has been a member of the governing bodies of several governmental entities related with the financial services industry in Mexico, such as the National Banking and Securities Commission, the National Insurance and Bonds Commission, the National Commission of the Retirement Savings System and the Institute for the Protection of Banking Savings (FDIC equivalent), among others.

Prior to his work on the public sector, Mr. Mancera worked as a lawyer at highly prestigious law firms both in Mexico and abroad, specializing in international financial law.