Best Places to Work in Healthcare - 2019 DC Spartan Race All <Prev Next> Rank 22 - Supplier Protenus Supplier, Baltimore , MD Tweet Share Share Email More Years on the list: 2 Number of U.S. employees: 61 Voluntary employee turnover: 3% What employees love: Flexible work schedule and remote work; unlimited PTO; and 12 weeks paid time off for new moms and dads