Pentasia is seeking a Senior Full Stack .NET Developer to join a fast-paced technology team in Toronto. You will design, build, and maintain cloud-native applications with .NET on the backend and React/TypeScript on the frontend, delivering real-time data and scalable solutions. The role includes technical leadership, mentoring junior developers, code reviews, and driving best practices across the engineering team, with exposure to CI/CD, distributed systems, and up-to-date testing approaches.