Chinese tech giants are expanding in Singapore as they face a crackdown at home and growing pressure in other key markets — but they may struggle to find talent in the city-state. Messaging-and-gaming behemoth Tencent is opening a hub and TikTok owner ByteDance is on a hiring spree after establishing a regional headquarters, while e-commerce giant Alibaba is investing in property and recruiting. The tech firms are shifting their focus to booming Southeast Asian markets as authorities tighten the screws at home amid concerns about the platforms’ growing power. China’s regulators have launched a blitz on the sector, hitting several firms with heavy fines, and threatening to slice up massive companies whose reach now extends deep into the daily lives of ordinary Chinese. Meanwhile, festering tensions between Washington and Beijing after an assault on Chinese tech titans during Donald Trump’s presidency make the United States an unattractive prospect, and problems abound elsewhere. “Chinese tech companies are facing regulatory pressures and sanctions from governments in other …