On 27 February 2000, Nuruddin was promoted to District and Sessions Judge.[2]
On 10 October 2018, Nuruddin, as Judge of the Speedy Trial Tribunal-1, issued the 2004 Dhaka grenade attack case.[3] The case had accused 49 persons in total.[4][5] It ruled the grenade attack "was a well-orchestrated plan, executed through abuse of state power".[5] Nuruddin said, "The specialised deadly Arges grenades that are used in wars were blasted at the Awami League's central office on 23 Bangabandhu Avenue in broad daylight with the help of the then state machinery".[5] On charges of killing through common intention, planning and criminal conspiracy, 38 persons were found guilty.[6] 19 of them were sentenced to death, including former Minister of Home Affairs Lutfozzaman Babar, Member of Parliament Abdus Salam Pintu, General Rezzakul Haider Chowdhury, and General Abdur Rahim.[6][7] The verdict also sentenced 19 to life imprisonment including Tarique Rahman, son of former Prime Minister Khaleda Zia and acting chairperson of the Bangladesh Nationalist Party, former secretary to Prime Minister Khaleda Zia, Harris Chowdhury, and member of parliament, Kazi Shah Mofazzal Hossain Kaikobad.[7]
Nuruddin was appointed an additional judge of the High Court Division on 21 October 2019.[2][8]
In December 2020, Nuruddin and Justice FRM Nazmul Ahasan ordered the government to protect monuments of President Sheikh Mujibur Rahman.[9]
In June 2022, Nuruddin and Justice Jahangir Hossain Selim suspended a verdict of the Nilphamari District Women and Children Repression Prevention Tribunal that acquitted a member of Border Guards Bangladesh after the 15 year old victim made a surprise appearance before the bench without lawyers and sought justice from the bench.[10][11] Nuruddin and Justice Jahangir Hossain granted permanent bail to former Prime Minister Khaleda Zia in a 2014 case on hurting religious sentiments and 2017 case for making derogatory comments on former President Sheikh Mujibur Rahman.[12] On 3 October 2022, Nuruddin and Justice M Akram Hossain Chowdhury granted bail to a leader of Rajbari District unit of Bangladesh Jatiotabadi Mohila Dal in a defamation case for making derogatory comments about Prime Minister Sheikh Hasina.[13]
^Halder, Chaitanya Chandra; Habib, Wasim Bin; Adhikary, Tuhin Shubhra (2018-10-11). "A bid to make AL leaderless". The Daily Star. Retrieved 2023-08-07.
^ abcShakhawat Liton; Chaitanya Chandra Halder; Wasim Bin Habib; Tuhin Shubhra Adhikary (11 October 2018). "August 21 attack: 'State-backed crime' punished". The Daily Star. Archived from the original on 12 October 2018. Retrieved 14 October 2018.