Following her art direction and event planning work for FabCafe at Loftwork Inc., Sonoka joined Mercari, Inc. in 2018 after a period of freelancing. At Mercari, she first worked for R4D, a R&D unit, joined the design team assigned with the task of company-wide branding. She joined Takram in 2021. She is aspired to realise and develop an open and creative space for everyone. and organises "Design Scramble", a design festival, during her private hours.