Hussain’s legal career has spanned across continents and has comprised positions in Canada, the United States, Tunisia, and Pakistan. In his education at Harvard Law School, Hussain developed a focus on litigation and cutting-edge legal scholarship, especially concerning the relationship between legislatures and courts in different countries. During this stage of his career, Hussain was active on campus in many curricular and extracurricular activities, headlined by his contributions to Harvard Law School’s reputed Global Anticorruption Blog. As a part of that project, he had the opportunity to spend several years refining his writing skills under the tutelage of Harvard Law School Professor Matthew Stephenson, writing on topics as varied as anti-corruption, democratization, and litigation-related issues.

Hussain’s tenure as a Harvard Law School Chayes Fellow further diversified his experience, allowing him to explore complex legal matters on an international scale while still in law school. In pursuing such global work, Hussain qualified through a highly competitive process to serve as a clerk to Justice Syed Mansoor Ali Shah at the Supreme Court of Pakistan. While developing his understanding of judicial processes and high-level legal decision-making in Pakistan, Hussain also saw the potential for an institutional collaboration between Pakistan’s apex court and the United States’ leading law schools. He remains deeply involved in large-scale and ongoing efforts to bring America’s brightest law students to a developing world judicial context.

Hussain's academic accomplishments are equally remarkable. At McGill University in Montreal, he studied International Development and French, earning multiple degrees and graduating as class valedictorian. Throughout his career, Hussain has developed a competence in addressing key issues in United States domestic complex litigation, international law, and rules-based governance in developing countries.