As a Sr C++ Software Engineer, you'll often work on designing, developing, and optimizing high-performance applications or system software, tackling challenging technical problems. You are likely to take ownership of significant code components, contribute to architectural decisions, and ensure robust, efficient, and maintainable solutions. Collaboration with cross-functional teams—including QA, DevOps, and product managers—is a key part of the role, along with mentoring junior engineers and participating in code reviews. Typical responsibilities may also include performance profiling, debugging complex issues, and staying current with C++ standards and best practices.