I am a software dev in Bytedance (company that created Tiktok) in Shenzhen. In general I like it here. The company is listening to feedback, coworkers are very friendly, and the work is challenging with good pay, I am definitely learning a lot here. Having said that, the workload is quite heavy - we have to work every other Sunday (Saturdays always off). If you are interested in a referral drop me an email at georgy [at] bytedance(dot)com. We have devs in the US as well.