Making his One Day International debut for Bangladesh against Zimbabwe on 1 December 2014, Taijul finished with figures of 4/11 from seven overs, including a hat-trick. He became the fourth Bangladeshi to take an ODI hat-trick, after Shahadat Hossain, Abdur Razzak, and Rubel Hossain, and the first to take a hat-trick in ODI debut. At the 2015 World Cup played in Australia and New Zealand, Taijul was included in Bangladesh's squad, but played only a single match, taking 0/58 against New Zealand. He was dropped from the squad for the team's next international ODI series, when Pakistan toured in April and May 2015, but was named in the squad for the two-Test series. In the first Test in Khulna, Taijul took 6/163 in Pakistan's only innings, the second-best figures by a Bangladeshi bowler against Pakistan (after Shakib Al Hasan's 6/82 in 2011).