Explore high-impact Senior Software Engineer - FullStack .NET Core jobs and advance your career at the intersection of robust backend systems and dynamic user interfaces. This senior-level role is designed for experienced developers who architect, build, and maintain comprehensive software solutions using the Microsoft technology stack, primarily focusing on .NET Core (and its evolution, .NET 5/6/7+). Professionals in these positions are end-to-end owners of the software development lifecycle, requiring a deep understanding of both server-side logic and client-side experiences. Typically, a Senior FullStack .NET Core Engineer is responsible for designing scalable and secure application architectures. On the backend, this involves developing RESTful APIs, microservices, and business logic using C# and .NET Core, often integrating with SQL Server or other databases via Entity Framework. On the frontend, they commonly build responsive and interactive web applications using JavaScript frameworks like Angular, React, or Vue.js, complemented by HTML5 and CSS3. Their day-to-day duties include writing clean, testable code; conducting code reviews; optimizing application performance; and ensuring system reliability and security. They collaborate closely with product managers, UX/UI designers, and other engineering teams to translate business requirements into technical specifications and functional software. The typical skill set for these jobs is extensive. A strong command of C#, .NET Core/.NET, and ASP.NET Core is fundamental. Proficiency in modern frontend frameworks (Angular/React), along with a solid grasp of web fundamentals (JavaScript, TypeScript, CSS), is essential. Experience with cloud platforms like Microsoft Azure or AWS is highly valued, as is knowledge of containerization (Docker, Kubernetes), CI/CD pipelines, and DevOps practices. Senior roles demand expertise in software design patterns, database design, and API development. Beyond technical prowess, successful candidates demonstrate leadership, mentorship capabilities, excellent problem-solving skills, and the ability to communicate complex ideas effectively. These jobs are pivotal in organizations driving digital transformation, offering professionals the chance to lead projects and shape technological direction. If you are seeking Senior Software Engineer - FullStack .NET Core jobs, you are targeting roles that blend deep technical expertise with strategic influence, building the enterprise-grade applications that power modern businesses.