He served as a Supreme Court Judge and Chairman of the Criminal Chamber of the Supreme Court of the Republic of Indonesia, where he was famous for his verdicts that tended to increase sentences for convicted corruption cases and the dissenting opinions he issued in several major cases.

After returning from the US, he established a law firm, Artidjo Alkostar and Associates, until 2000, when he was elected as Supreme Court Justice of the Republic of Indonesia.

[9] Artidjo's became a prominent Supreme Court justice when he disagreed with two other judges in the case of former President Suharto and the Bank Bali scandal with defendant Djoko Soegiarto Tjandra.

In the Djoko Tjandra case, he concluded that the defendant was guilty, sentencing him to 20 years, although two other chief justices acquitted him.

While joking, he added that he had made progress, because when he was a lawyer he often lost cases because he did not give bribes to judges and prosecutors.

"[7] Artidjo passed away on Sunday, 28 February 2021 in Jakarta,[11] complications with lung, heart, and kidney disease were believed to be the cause of his death.