The University of Jaffna (UoJ) coding competition that we refer to as “UoJCoders” is aimed to enhance the problem-solving skills and programming skills among the undergraduate students in computing to produce efficient programmers. The competition is a 12-hours inter-university coding competition inspired by IEEEXtreme. The competition is open to all undergraduate students in Sri Lanka, especially for those who follow degrees in the computing discipline. The 12-hours coding competition is conducted online using the hackerrank platform.