A retired four-star admiral was convicted on Monday of using his position in the Navy to try to steer millions of dollars in contracts to a company that had given him a lucrative job in a bribery scheme, according to court documents.

On the fourth day of deliberations in federal court in Washington, a jury found the former admiral, Robert P. Burke, 63, of Coconut Creek, Fla., guilty on four felony counts that included bribery and conspiracy.

The charges could bring up to 30 years in prison at his sentencing, which is scheduled for Aug. 22. He has denied any wrongdoing.

With the verdict, Admiral Burke became one of the highest-ranking former U.S. military officers ever convicted of a crime committed while serving in a leadership role. He retired in 2022, having previously risen to the Navy’s second-highest-ranking officer. At the time of the bribery scheme, he was commanding naval forces in Europe, Russia and most of Africa.

In a statement on Monday, Jeanine Pirro, the interim United States attorney for Washington, said that the verdict sent a message.

“When you abuse your position and betray the public trust to line your own pockets, it undermines the confidence in the government you represent,” Ms. Pirro said. “Our office, with our law enforcement partners, will root out corruption — be it bribes or illegal contracts — and hold accountable the perpetrators, no matter what title or rank they hold.”