He has been serving as the secretary general of Pakistan Tehreek-e-Insaf (PTI) since 7 September 2024 and as head of legal affairs for the party since 21 August 2024.
He is widely recognised as a leader in dispute resolution, specialising in corporate, taxation, commercial banking, and competition law.
Raja, PTI supporters, and independent journalists claimed the ECP Form 47 results showed clear evidence of rigging by the Army, and the Lahore High Court issued a stay on a final declaration of the results by ECP until a hearing could be fixed to investigate the matter.
Referring to the 2021 Minar-e-Pakistan mass sexual assault involving a female social media celebrity, he commented that contrary to Pakistan's perceived cultural values of decency, the perpetrators at Minar-e-Pakistan displayed a lack of self-restraint, deviating from societal expectations to protect the victim, or any TikToker.
Raja criticised the reactions across various media platforms, which swiftly shifted blame onto the victim, labelling her as an attention-seeking conspirator against Pakistan.