Justworks is seeking a Senior Software Engineer to join their team in building and maintaining their HR solutions platform. The role combines technical leadership with hands-on development, focusing on creating secure, scalable services. You'll work with technologies like Golang, Ruby on Rails, and various AWS services while collaborating with cross-functional teams. The ideal candidate has 5+ years of experience, strong object-oriented programming skills, and experience leading technical initiatives. The position offers competitive compensation ($167,500-$205,000) and comprehensive benefits including wellness programs and company retreats. The company values camaraderie, openness, grit, integrity, and simplicity, fostering an inclusive environment where diversity is celebrated. This role provides an opportunity to impact a growing business while working on challenging technical problems in a supportive, entrepreneurial setting. The position is hybrid-based in either New York or Toronto, offering flexibility while maintaining collaborative in-person interactions.