Amazon is looking for a Software Development Engineer III to join the Sponsored Products and Brands team, where you will play a key role in building and scaling advertising technology that drives billions of customer interactions daily. This position offers the opportunity to work on complex, high-impact systems that power Amazon's advertising platform while collaborating with talented engineers across multiple teams. As a senior engineer, you will contribute to architectural decisions, mentor junior developers, and help define the future of digital advertising technology. In this role, you will design and implement robust backend services that handle massive data volumes and ensure low-latency performance for advertising campaigns. Your responsibilities include developing scalable algorithms for ad targeting, bidding optimization, and performance analytics. You will work closely with product managers and data scientists to translate business requirements into technical solutions, participate in code reviews, and maintain high standards for software quality. Additionally, you will troubleshoot production issues, optimize system performance, and contribute to the continuous improvement of development processes and tooling. The ideal candidate possesses strong software engineering fundamentals with expertise in distributed systems, large-scale data processing, and cloud-native architectures. Proficiency in programming languages such as Java, Python, or C++ is essential, along with experience building and operating high-availability services. Candidates should demonstrate excellent problem-solving abilities and a track record of delivering complex projects in fast-paced environments. Required qualifications include a Bachelor's degree in Computer Science or related field, along with 5+ years of professional software development experience. Experience with AWS services, database technologies, and modern development practices including CI/CD pipelines is highly valued. Strong communication skills and the ability to work effectively in cross-functional teams are necessary for success in this collaborative environment. Amazon offers comprehensive benefits including health coverage, retirement plans, and employee stock purchase options. Team members enjoy flexible work arrangements and access to continuous learning resources. Career growth opportunities include technical leadership tracks, management development programs, and exposure to cutting-edge technologies in the advertising and e-commerce space. Join Amazon and contribute to innovations that reach millions of customers worldwide while advancing your career in a supportive, growth-oriented workplace.