This position is listed on behalf of a partner company, who manages all applications and next steps. Our partner is looking for a Senior Full Stack Software Engineer based in the United States. Join a collaborative engineering team building scalable, enterprise-grade web applications that support innovative, AI-powered customer communication solutions. In this senior-level role, you will contribute across the full software development lifecycle, with a strong emphasis on frontend development, application performance, and user experience. You will build responsive interfaces, develop robust backend services, and help deliver secure, reliable, and maintainable software using modern technologies. Working closely with product managers, architects, and fellow engineers, you will translate business requirements into effective technical solutions. You will also leverage AI-assisted development tools to accelerate coding, testing, refactoring, and debugging while maintaining high engineering standards. This is an opportunity to shape technical decisions, mentor teammates, and make a meaningful impact in a fast-growing, fully remote environment.