He leads Withers Tech Asia, which comprises a team of highly experienced lawyers with expertise in investment funds, tax structuring, investments in tech companies, mergers and acquisitions of technology businesses and assets, and commercialisation of digital assets.

Joel is recommended by Chambers, Legal 500 and IFLR1000 for his work in M&A, start-ups and emerging companies in Singapore and Indonesia, and is consistently listed by Chambers since its inaugural Fintech Guide as one of the Notable Fintech Practitioners in Indonesia. Most recently, Joel was ranked in Chambers for his expertise in the area of start-ups and emerging companies in Singapore and in M&A in Indonesia.

Joel was one of only four lawyers from Indonesia to have been included in Asian Legal Business' 40 Under 40 listing for 2019, and was also recognised as a Rising Star, and the only non-Indonesian practitioner, in Asian Legal Business' inaugural and second listings of Rising Stars in Indonesia.

Outside of legal practice, Joel is the vice chairman of the Singapore Chamber of Commerce in Indonesia, a faculty member of the Singapore Institute of Legal Education and tutor for the Advanced Corporate module of the Singapore bar course, as well as a non-faculty lecturer at the Law and Business Faculties of the University of Indonesia, and Universitas Pelita Harapan.