From war and refugee life to Canadian universities, the legal profession, academia and the leadership of South Sudan’s petroleum sector, Dr. Santino Ayuel Longar Dau has travelled a remarkable road. Now Undersecretary in the Ministry of Petroleum, he is helping steer reforms in an industry central to the country’s economic future.
By Ajong Mbapndah L
JUBA, South Sudan — Few careers capture the difficult journey of South Sudan as vividly as that of Dr. Santino Ayuel Longar Dau. Born in Panriang in the present-day Ruweng Administrative Area, he experienced war at an early age, entered the SPLA/SPLM as a child soldier and underwent military training at Bongo Training Camp before eventually finding refuge at Kakuma Refugee Camp in Kenya.
Today, Dr. Santino is Undersecretary in South Sudan’s Ministry of Petroleum, placing him at the administrative center of an industry that remains the backbone of the national economy. Behind the government title is a journey spanning three continents and several professions — soldier, refugee, student, lawyer, university professor, author, oil executive and senior civil servant.
From Panriang to Canada
The turning point came in 2004 when Dr. Santino received a World University Service of Canada scholarship to study at Brock University. He graduated with an honours bachelor’s degree in political science and economics before earning a Juris Doctor from the University of Ottawa and entering legal practice in Canada.
He qualified as a barrister, solicitor and notary public and became a member of the Law Society of Ontario. His pursuit of higher education continued with an LL.M. from Dalhousie University and a PhD in Law from Queen’s University in Kingston, Ontario.
His doctoral research examined the debate between universalism and cultural relativism in the application of international human rights standards in Africa, an area that would remain central to his academic work. The years in Canada gave him legal training, academic credentials and professional experience that he would eventually bring home to South Sudan.
Lawyer, Professor and Author
After years of study and professional development in Canada, Dr. Santino turned his attention back to South Sudan. He had taught employment law at the University of Ottawa before returning home, where he joined the University of Juba as an Assistant Professor and founded the Law Development Center at the School of Law.
He also worked as a Research Associate with the Sudd Institute, contributing to discussions on governance, constitutionalism, human rights, transitional justice and South Sudan’s political development. His research interests have included international human rights and humanitarian law, international investment, constitutional law and public law.
His scholarship culminated in International Human Rights in Post-Colonial Africa: Universality in Perspective, published by the University of Wales Press in 2024. The book examines how universal human rights principles interact with Africa’s cultural diversity, historical experience and postcolonial realities, and has since attracted attention in academic circles.
For someone whose childhood was shaped by war and displacement, the progression from Kakuma Refugee Camp to studying, practising and teaching law represented an extraordinary transformation. His career, however, was about to move beyond the classroom and into an industry at the center of South Sudan’s economic fortunes.
From Academia to South Sudan’s Oil Industry
Dr. Santino eventually moved into business and petroleum, gaining experience that would prove valuable when he later entered government. He served as Vice President of Nile Logistics before taking on senior leadership responsibilities at the Greater Pioneer Operating Company, GPOC, one of South Sudan’s major oil-producing consortia.
At GPOC, he gained first-hand exposure to the operational and commercial realities of South Sudan’s petroleum industry. According to biographical information provided for this profile, oil production increased by more than 10,000 barrels per day during his tenure in senior management.
The experience brought him close to some of the industry’s biggest challenges, including maintaining production, managing infrastructure, developing local expertise and improving operational efficiency. In March 2026, Dr. Santino was appointed Undersecretary in the Ministry of Petroleum, moving from industry into one of the most important technocratic positions in government.
A Reform Agenda Takes Shape
Since taking office, Dr. Santino has advanced an agenda centered on increasing production, strengthening local participation, environmental stewardship, capacity building, knowledge transfer and improving conditions for oilfield workers. At the heart of that agenda is the conviction that South Sudan’s petroleum industry should create considerably more value inside the country.
That means increasing opportunities for South Sudanese companies, strengthening local content regulations and developing the technical expertise needed for nationals to assume greater responsibilities across the petroleum value chain. It also means rebuilding production and attracting investment at a time when the industry needs capital, technology, infrastructure and greater operational resilience.
Capacity building has emerged as an important part of the Ministry’s engagements. In July 2026, Dr. Santino signed an oil and gas investment memorandum of understanding with Bianchi Gold Trading Investment Company covering development opportunities, infrastructure, storage and distribution, technical studies and capacity-building programs for local personnel.
His responsibilities also extend to the institutional demands of running the sector. In September 2026, he led a Ministry delegation before the Transitional National Legislative Assembly’s Petroleum Committee to present its budget, highlight operational challenges and seek legislative support for development priorities.
Putting South Sudanese at the Center
Local content is emerging as one of the defining pillars of Dr. Santino’s approach. South Sudan has produced oil for years, yet a central question remains over how much of the knowledge, technical capability, procurement, employment and commercial opportunity surrounding those barrels stays in the country.
For Dr. Santino, nationalization is about more than replacing foreign workers with South Sudanese. It requires building the skills and competence that allow South Sudanese professionals and companies to compete and perform at the standards demanded by the international petroleum industry.
Training and knowledge transfer are therefore closely tied to the local content push. Engineers, technicians, lawyers, geologists, managers and entrepreneurs need pathways into an industry capable of providing far more than government revenue if its wider value chain is properly developed.
The welfare of oilfield workers is another priority, with attention increasingly focused on the people working in difficult environments to keep production facilities operating. Improving their conditions, professional development and long-term prospects forms part of the wider reform agenda being pursued at the Ministry.
Oil, Environment and Responsibility
Environmental stewardship is also gaining greater prominence as the country seeks to expand petroleum activity. Many producing areas are home to communities that have lived alongside oil operations for years, making pollution, environmental management and the impact on livelihoods increasingly important parts of the national conversation.
For the Ministry, increasing production and strengthening environmental responsibility will have to move together. Sustainable growth in the sector will depend not only on investment and output, but also on how petroleum operations affect communities, land and water in producing areas.
This places environmental standards alongside production, investment, worker welfare and local content in the wider reform conversation. For a country seeking to revive its petroleum sector, the challenge is to increase economic returns without losing sight of the communities and environments where those resources are produced.
Turning Petroleum Wealth Into National Capacity
South Sudan holds some of sub-Saharan Africa’s most significant petroleum resources, yet much of the country’s potential remains undeveloped. Years of conflict, infrastructure constraints, disruptions to export routes, limited investment and institutional weaknesses have prevented the industry from reaching its full potential.
Reversing that record will require considerably more than additional barrels. It will demand investment, stronger institutions, technical expertise, reliable infrastructure, competitive local companies and a workforce capable of sustaining increasingly complex petroleum operations.
Dr. Santino’s background gives him an unusual combination of experience for that task. He brings legal training to an industry governed by contracts and regulation, academic experience to a sector where knowledge transfer is critical, corporate experience from inside petroleum operations and an understanding of South Sudan shaped by his own journey through war, displacement and return.
The Journey Home
There is a striking symmetry to Dr. Santino’s story. A young boy whose early years were shaped by war and displacement eventually found opportunity through education abroad, becoming a lawyer in Canada, earning advanced degrees, completing a doctorate and building an academic career before choosing to return home.
Back in South Sudan, he moved from scholarship and institution building into business, petroleum leadership and eventually public service. Today, he sits at the administrative center of the industry that finances much of the country he returned to serve.
The challenge before him is now measured in tangible outcomes: barrels produced, investment attracted, South Sudanese trained, local companies empowered, environmental standards strengthened and conditions improved for oilfield workers. Those benchmarks will ultimately determine the impact of the reforms he is helping to drive.
From Panriang and Kakuma to universities and courtrooms in Canada and ultimately back to Juba, Dr. Santino Ayuel Longar Dau’s journey has been anything but conventional. Its next chapter is unfolding in South Sudan’s petroleum industry and in the country’s efforts to convert the wealth beneath its soil into skills, businesses, institutions and opportunities that endure beyond the oil.
