Stephen CallaghanStephen Callaghan

Stephen Callaghan

CEO and Vice Chairman

Stephen joined as Chief Executive Officer of Northgate Public Services in September 2016. He is responsible for the company’s overall strategic development and has a considerable track record of growing and transforming businesses with particular expertise in software and services domains. He began his career in the British Army as a commissioned officer and studied electrical engineering at Cranfield University.

Alan O'ReillyAlan O'Reilly

Alan O'Reilly


Alan O’Reilly is Chief Financial Officer for Northgate Public Services. He is responsible for providing financial and business leadership for the company and for helping to determine and deliver the company strategy. Alan joined NPS in November 2016 from GC Aesthetics and has extensive international experience in senior finance roles in software & technology companies in Asia, the United States, United Kingdom and Europe over a 15 year period across a range of growing businesses.

Masakazu YamashinaMasakazu Yamashina

Masakazu Yamashina


Dr. Yamashina is Executive Vice President at NEC Corporation. Currently responsible for the management of Safer Cities business as Executive Vice President and Global Head of Safety for NEC Corporation, and Chairman of NPS. He has a PhD in Engineering from the Graduate School of the Tokyo Institute of Technology and is a fellow of the IEEE.

Tom HiraTom Hira

Tom Hira


Tom is the Head of Global Business Operations for Northgate Public Services. Tom is responsible for company’s growth through maximising synergies between NPS and NEC group. Tom joined NPS in 2018, bringing NEC’s innovative and proven cutting edge technologies to NPS and accelerate NPS’s international business expansion by collaborating with NEC’s global business networks. Tom has previously worked at NEC America and NEC Headquarter overseeing NEC’s global public safety business.

Asako AoyamaAsako Aoyama

Asako Aoyama


Asako Aoyama is VP&CFO of Global Business Unit at NEC Corporation, responsible for managing the finance teams across Europe, APAC, Latin America, Middle East, Africa, and China. Prior to joining NEC in January 2020, she held various senior roles in finance and corporate strategy in the Coca-Cola business. She is a Japanese CPA and holds MBA from the business school at the Ohio State University.


Makoto ShotaMakoto Shota

Makoto Shota


Makoto Shota is Chief Financial Controller directly reporting to Dr. Yamashina, responsible for the global-wide Safer Cities business with more than 20 country affiliates in NEC Group. He has broad experiences and achievements in Corporate Strategy, Business Planning and Human Resources including numbers of corporate reorganizations during his over 30 years of service in NEC Corporation since his graduation from the Faculty of Law in Kyoto University.


Share via