Jonathan is a registered architect and member of the Singapore Institute of Architects (SIA). He received his Master of Architecture Degree from the National University of Singapore. In 2013, he started his own practice Studio JP before rebranding to Provolk Architects in 2018, a practice that believes in designing for people.​

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He is more widely known for leading an initiative to “save” Dakota Crescent’s post-war SIT estate following the announcement to redevelop the area in 2014. Together with the help of a group of architects and a social research team of diverse backgrounds, he and his team produced a comprehensive conservation report, which managed to convince the Member of Parliament to file a motion to conserve the area. He has since been invited to speak at Archifest, Noise Singapore, City Ramble and NUS to share his experience on ground up efforts in conservation.

Today, Jonathan continues to be actively involved in DOCOMOMO (Documentation And Conservation of the Modern Movement) Singapore as Secretary to persuade stakeholders to conserve notable buildings like Golden Mile Complex and Pearl Bank Apartments. He also teaches as an Adjunct Lecturer at Temasek Polytechnic’s Design School in a hope to inspire the next generation to be responsible designers. He also serves as the Honorary Secretary of the Singapore Heritage Society and was co-curator for Singapore Institute of Architect's Archifest 2021.