It took a Philadelphia jury less than an hour to convict Wayne James, 47, of one count of first-degree murder and four counts of aggravated assault for a 2011 shooting inside a Nicetown bar.
Investigators said James on June 26 stood in the doorway of the Genesis Tavern, located at 4421 Wayne Ave., and fired a dozen shots inside.
The gunfire killed 43-year-old Philadelphia Water Department employee Carl Sharper and injured five others.
James opened fire inside the bar as retaliation for having been thrown out earlier in the night for smoking, according to prosecutors.
He was arrested several days after the incident.
Following the conviction, the Hon. Teresa Sarmina immediately sentenced James to life in prison without the possibility of parole.