Ar Saifuddin is President of Arcasia (2024/2025), a fellow of Pertubuhan Akitek Malaysia, Registered ASEAN Architect, APEC Architect, Honorary Member of Australian Institute of Architects, Association of Siamese Architects under Royal Patronage, Council Member (Alternate) Region IV The International Union of Architects (UIA) (2017-2021), Vice President Zone B Arcasia (2019-2021), President of Pertubuhan Akitek Malaysia (2011-2013), and Past President on Council of Pertubuhan Akitek Malaysia (2015-2022, 2023-2024).

Ar Saifuddin is a current Board Member of MRT Corp and also Chairman of its subsidiary Lingkaran MRT Sdn Bhd. He was a member of the Board of Directors Universiti Malaya from 2011-2022, 2023-2026 and was the Chairman of Universiti Malaya Medical Centre and Universiti Malaya Specialist Centre. He was responsible for organising Universiti Malaya masterplan idea competition in 2016 and Chairman of its masterplan Committee. He was a Chairman of CIDB Initiative Working Group on Promotion IWG5-CITP Promotion and a committee member of Construction Industry Transformation Programme – TWG1 (2016-2020).

He was awarded by his alma mater, Deakin University, Australia, Alumni of the Year 2020, the first Malaysian to be accorded with the award. He was also chosen as one of the distinguished alumni by Universiti Teknologi Malaysia during the university’s 50th anniversary in 2022. In 2023, Ar Saifuddin was one of the recipients of The CIDB Fellowship Award, a recognition and appreciation from CIDB to industry players who have contributed significantly to the development of the construction industry. Additionally, The American Institute of Architects (AIA) awarded him the AIA Presidential Medal and Honorary AIA Membership during the International Presidents’ Forum in Washington DC. He is also appointed as an adjunct professor for UCSI University School of Architecture and Built Environment.

He is the architect for the Low Energy Office (LEO) for the Ministry of Green Technology and Water Malaysia which won The Malaysian Construction Industry Award 2003 and the ASEAN Energy Award 2006. The LEO Building was also chosen to be on the Malaysian 50 sen commemorative stamp for the Energy Efficiency Building Series in 2009. He is currently the Chairman of the protem Committee Persatuan Alumni Universiti Teknologi Malaysia, cawangan senibina.