Prosper is seeking a Senior Software Engineer in Test (SDET) to join their team in San Francisco. This role combines software development and quality assurance, requiring expertise in test automation and quality processes. The position offers a competitive salary range of $148,000 - $175,000 annually, plus bonus and benefits. The ideal candidate will have 5+ years of experience in software QA/verification and strong programming skills in Java and Python. They will be responsible for designing and implementing test standards, building automation frameworks, and ensuring quality across web and mobile applications. The role offers hybrid work arrangements and comprehensive benefits including health coverage, flexible time off, and wellness programs. This is an opportunity to work with experienced industry leaders in a fast-paced environment, making significant impact on products that affect people's lives.