He joined the Lubner Group in 1995, as a Financial director, and remains in the group, currently as the Chief Executive Officer, responsible for a multitude of companies ranging from property developments, direct property investments, nurseries, office automation, private equities, share trading companies and other financial services. In 1998, he took on the role of Financial director of Afrika Tikkun when the initial AU$9 690,05 was raised to start the organisation. Today, this organisation has a fundraising target of AU$7 752 038,92 and a staff of over 500 employees. The time Arnold gives is pro bono and his input is considered invaluable in taking the organisation forward. He plays an active role in the Exco and the group as a whole.