If you want high-impact stuff, why not go to Singapore and get involved with one of the many #fintech incubators or accelerators. Some large banks like DBS and insurers like AIA/MetLife are creating these programs to work on wellness, big data, health, financial innovation (payments, remittances, bitcoin etc). The businesses provide the problems/issues and guidance while you can work on the tech side of solving the issue.
Just my 2c, not knowing exactly how feasible this is for you.
Just my 2c, not knowing exactly how feasible this is for you.