Hiroshi Ota joined International Telecommunication Union (ITU) in January 2009. He is currently the secretariat for ITU-T Study Group 15 (optical transport networks and access network infrastructures) and ITU/WMO/UNESCO IOC Joint Task Force on submarine cable systems for climate monitoring and disaster warning. Previously, he supported SG5 (Environment and climate change), SG12 (performance, QoS and QoE), Focus Group on disaster relief and Focus Group on smart grid.
Before joining ITU, he was with NTT, Japan and actively participated in standardization activities including ITU-T SG13, SG15, IEEE 802 LMSC and IETF. He was rapporteur for ITU-T SG13 and SG15 as well as Working Group Chair in IETF.