Sinai on the Hill Take leadership skills to a new level. Washington, DC internship combined with the Sinai Retreats provides a summer of turbocharged leadership activity. J-Biz Learn about Judaism and its applications in the Business World. Gain access to Internships within a variety of areas in Business. Learn from and interact with successful Jewish entrepreneurs and business people. London Fellowship For Jewish students who went to Yeshiva High School, regardless of their affiliation or Jewish observance. Explore many of the deeper issues, questions and problems within traditional Judaism in an open and direct way. J-MED Network with influential Jewish medical and healthcare professionals. Learn about Judaism and its application to the medical professional world.