Max Bhatti and the four other engineers at Basalt Space worked 22 hours a day in March to assemble the startup’s first satellite so it would be finished in time for a launch deadline. “It makes 996 look like a vacation,” says Bhatti, the CEO. To keep electronics free of contamination , the team operated in a well-ventilated tent that Bhatti boasts is more dust-free than a hospital. It sits in one of three adjacent apartments the company leases in San Francisco’s Lower Nob Hill neighborhood. The apartments have been home and office for the Basalt team for the past two years, replete with all the staples of a hacker house , including a laundry machine, an outdoor gym, and stacks of ramen. Employees, who are all in their 20s, feel a sense of urgency as the third and largest-yet wave of satellite development unfolds across the US. Basalt is part of a generation of startups aiming to broaden reliable and secure access to satellite imaging, navigation, and communication services.…