Senior Software Development Engineer (Full Stack)

This position is listed on behalf of a partner company, who manages all applications and next steps. Our partner is looking for a Senior Software Development Engineer (Full Stack) based in the United States. As a Senior Software Development Engineer, you will help build and evolve scalable infrastructure powering real-time voice and messaging experiences. You will take ownership of key platform components, contributing across frontend applications and backend services. Working in a collaborative, remote-first engineering environment, you will influence architectural decisions and drive high-quality software delivery. You will also help strengthen development practices, including the effective and responsible use of AI-assisted engineering tools. Through technical leadership, mentorship, and hands-on problem-solving, you will contribute to platform reliability, performance, and long-term maintainability. This is an opportunity to make a meaningful impact within a small team where engineering contributions directly shape the product.