Hussain’s legal career has spanned many contexts and continents, including work and educational experiences in Canada, the United States, the Middle East, and Pakistan.His journey took a pivotal turn at Harvard Law School, where his focus on international trade law and litigation deepened significantly. As a law student, Hussain contributed to the esteemed Global Anticorruption Blog, fostering his interest in anti-corruption, democratization, and trade issues. This role not only honed his analytical skills but also expanded his understanding of global legal challenges.

His tenure as a Harvard Law School Chayes Fellow further diversified his experience, allowing him to delve into complex legal matters on an international scale. Hussain's commitment to legal excellence was also evident during his time as a clerk to Justice Syed Mansoor Ali Shah at the Supreme Court of Pakistan. This position provided him with a unique perspective on judicial processes and the intricacies of high-level legal decision-making.

Hussain's academic accomplishments are equally remarkable. At McGill University in Montreal, he pursued International Development and French, graduating as class valedictorian. This achievement underscored his intellectual curiosity and commitment to academic rigor. Throughout his career, Hussain has demonstrated a consistent dedication to understanding and addressing key issues in international law and governance. His diverse experiences across different continents have equipped him with a unique perspective on the challenges and opportunities in the field of law, making him a distinguished figure in his domain.