DETROIT—There are more than 8,000 new technical job openings at General Motors, and the automaker plans to fill them during a hiring spree this year. The Detroit automaker is looking for software, computer, mechanical and electrical engineers, as well as battery engineers, cyber security experts, and others. GM said in a statement Wednesday that it’s expanding teams that develop vehicle software, engineer hydrogen fuel cells for non-automotive uses, and develop new battery designs, The company has been moving to expand its revenue sources with ventures outside of selling automobiles. It’s working with partners to develop hydrogen fuel cell locomotives, aircraft and generators. It’s also partnering with Honda on battery technology and vehicle platforms. New hires don’t necessarily have to work at the company’s technical center in the Detroit suburb of Warren, Michigan. The company has a “work appropriately” policy that gives employees flexibility to work where they want, when the …