Google is seeking a Senior Software Engineer for their YouTube Ads team in Warsaw, Poland. This role is crucial for developing and maintaining large-scale systems that power YouTube's advertising infrastructure. The ideal candidate will have strong experience in software development, particularly with Java or Python, and a deep understanding of data structures and algorithms. The position offers the opportunity to work on technology that impacts billions of users worldwide, focusing on data-intensive backend applications and complex system architecture. The role involves both technical leadership and hands-on coding, requiring skills in code review, system design, and problem-solving at scale. Google offers a collaborative environment where engineers can work on cutting-edge technologies across various domains including distributed computing, AI, and large-scale system design. The position requires 5 years of software development experience and emphasizes both technical excellence and leadership capabilities. This is an excellent opportunity to join one of the world's leading technology companies and work on products that have global impact.