Onn Chee is currently working as the CEO of Rajah & Tann CyberSecurity, Technical Director of Rajah & Tann Technologies, Managing Director of Infotect Security, and the Chief Technology Officer of Resolvo Systems. His areas of expertise include information leakage protection, web/cloud security, and security strategy. Onn Chee is also one of the co-inventors for at least six international PCT patent rights (http://www.wipo.int), besides several US, EU, and Singapore patents.
He published his works in information leakage protection and application of evidence laws when designing IT systems in the ISSA Journal. In addition, he had been a former contributor to the CIS security benchmarks.
Onn Chee is the current Singapore chapter lead of OWASP and the main organizer of one of the largest Security Meetup Groups in Singapore.
In addition, he is the Cloud Security Working Group Chair of the Security & Privacy Standards Technical Committee under IT Standards Committee in Singapore and had led the Singapore national delegation to ISO/IEC JTC 1/SC 27 meetings. He is one of the contributors to Singapore's first Technical Reference on public computing services (TR 31:2012) and is a member of the working group which developed Singapore's first national cloud security standard (SS 584:2013). Onn Chee is also a member of the working group which developed Singapore's first Technical Reference (TR 82:2020) on cloud native security guidelines. Currently, Onn Chee is the co-chair of Cloud Security Alliance APAC Research Advisory Council (APRAC).
Onn Chee is also part of the national team that developed Singapore’s first Technical References on Internet-of-Things (IoT), such as Technical Reference for Sensor Network for Smart Nation (Public Areas) (TR 38:2014) and Technical Reference for Sensor Networks for Smart Nation (Homes) (TR 40:2015).