Pinterest Labs is seeking a Senior iOS Engineer to join their Generative AI Products team, focusing on applied ML research and emerging product development. This role sits at the intersection of cutting-edge AI technology and product development, working directly with ML applied research teams. The position involves building zero-to-one capabilities in Pinterest's core app, which reaches over half a billion users. The ideal candidate should have strong experience in iOS engineering or full-stack development, with a passion for implementing frontier ML technology into user experiences. The role offers the opportunity to work with multimodal LLMs, recommendation systems, and visual generative models while collaborating with a diverse team of researchers, designers, and engineers. The position follows Pinterest's flexible hybrid work model, requiring quarterly in-person collaboration in San Francisco or Palo Alto. This is an excellent opportunity for engineers, including those from startup backgrounds, who want to impact millions of users while working with advanced AI technologies.