1983 Research Scientist, Microelectronics Research Laboratories, NEC
2001 Fellow, Nano Electronics Research Laboratories, NEC
2001 Team Leader, Macroscopic Quantum Coherence Team, RIKEN
2012 Group Director, Single Quantum Dynamics Research Group, RIKEN
2013 Team Leader, Macroscopic Quantum Coherence Research Team, Quantum Information Electronics Division, RIKEN Center for Emergent Matter Science
2014 Team Leader, Superconducting Quantum Simulation Research Team, Quantum Information Electronics Division, RIKEN Center for Emergent Matter Science (-present)