Swee Weng has been active in the field of Aviation Medicine since 1994 when he joined the Republic of Singapore Air Force (RSAF) as an Aviation Medical Officer. He has assumed various duties in his military service including aviation physiology training, clinical aviation medicine, aeromedical evacuation, medical research and chemical-biological-radiological defense. He is also trained to be a CRM facilitator and has undergone basic airborne parachuting training. He served as an exchange officer to the US Air Force Research Laboratory, San Antonio, TX for a year in 2006 and eventually retired from RSAF as Lieutenant Colonel in 2009. 

After retirement, he moved to the United States and has been serving as an Aerospace Physiologist and Aerospace Medicine Subject Matter Expert at Environmental Tectonics Corporation, based near Philadelphia, PA. He continues to be engaged in Aerospace Medicine as an aerospace physiology instructor, physiology training program developer and test pilot for physiology training devices and simulators. 

As an active pilot, he holds a FAA Commercial Pilot License with Instrument Rating and a Certified Flight and Instrument Instructor License. 

He has been an academician of the International Academy of Aviation and Space Medicine since 2013 and life member of the Aerospace Medical Association since 1998 (Fellow in 2020).