Berlin Startup Academy | 3,264 followers on LinkedIn. Berlin Startup Academy (BSA) is Berlin’s boutique, independent Startup Accelerator. In a 3-month, 2 day/week program involving 130+ of Berlin’s most experienced CEOs and investors, BSA helps to either turn an idea into a startup or to bring entrepreneurial drive to your enterprise. You join as a guy with an idea and you leave as the CEO of your own company.