Sung was a founding member and Board member of Oxford Accelerator, which is an accelerator based in Oxford to foster early stage businesses with a program, encouraging entrepreneurship at University of Oxford. Sung also found a Mobile Software development agency whilst he was at Oxford, secured deals at Korean Air, Korean Banks and many more. He exited this boutique enterprise by the time he graduated in 2014. He was also invited to Fast Track 100 conference(the fastest 100 growing company’s business owners’ congregation) two years in a row as a guest, hosted by Richard Branson at his estate in the UK. He is now building Maple Intelligence SG in Singapore.