WASHINGTON—U.S. employers posted a record 9.3 million job openings in April with the U.S. economy reopening at breakneck speed. The number of job openings soared 12 percent from the 8.3 million counted in March. But employers hired just 6.1 million, up one percent from March, according to a Labor Department report Tuesday, suggesting that positions are opening faster than companies can fill them. “More than a year after horrific job losses and wage cuts, job seekers have a strong hand in the labor market again. Demand for workers is surging as the broader economy starts to emerge from the pandemic,” said Nick Bunker, director of the Hiring Lab. “At the same time, supply is restrained as workers are slow to find their post-pandemic normal. The result is a labor market that has snapped back quicker than many expected.” Hotels and restaurants, reopening after being forced to close or curb hours …