Renaissance is hiring a Software Engineer I (Full Stack) to design, develop, and maintain backend services and RESTful APIs using .NET Core/.NET 5+ and support React-based frontends. The role requires working with SQL Server or PostgreSQL, writing unit and integration tests, collaborating in cross-functional teams, and using AI-assisted development tools. The position is remote in the US, offers a stated salary range of $68,000–$93,500 USD/year, and the employer does not sponsor employment visas.