Kumar was awarded the inaugural Skoll Scholarship for Social Entrepreneurship,[11] which facilitated his pursuit of an MBA at Saïd Business School, University of Oxford.

Subsequently, Kumar joined the World Economic Forum (WEF) in Geneva, Switzerland, where he was involved in designing and managing significant projects.

In 2011, Sujeet Kumar returned to India and established the Kalinga Kusum Foundation, a social enterprise, as well as LexMantra LLP, a business and legal consulting firm.

In recognition of his contributions as a policymaker and legal entrepreneur, as well as his work at the intersection of law, technology, development, and public policy, Kumar received the Youth Inspiration Award in 2017.

He also established a law firm LexMantra that provides legal services to domestic and international corporations, multinational companies, multilateral and government agencies, investors, and individuals.

[28] The event, hosted in Kalahandi, aimed to foster dialogue and action on regional development issues and served as an inspiration for similar platforms.

This initiative aimed to orient Odisha Legislative Assembly members (MLAs) on areas such as budgeting, child rights, and ease of doing business.

Kumar played a role in conceptualizing and implementing the Child-Friendly Constituency (CFC) initiative, developed in collaboration with the Kalinga Kusum Foundation and UNICEF.

The first CFC project in India was implemented in the Khandapada Assembly Constituency of Odisha’s Nayagarh district, with the support of local MLA Anubhav Patnaik.