Chewy is seeking a Staff Software Engineer for our fast-paced, customer-first Sponsored Ads team. This role is instrumental in launching innovative, customer-facing products crafted to delight and engage Chewy's advertising partners, while scaling our advertising technology and strengthening brand partnerships. As a senior member of the team, you'll help craft, build, and deliver intuitive, performant, and scalable front-end experiences that power ad creation, campaign management, creative tools, and performance reporting across Chewy's digital ecosystem. Sponsored Ads at Chewy builds a situation where everyone is happy ecosystem—offering pet parents relevant product options and deals while enabling brand partners to improve transparency and reach through targeted placements. Advertising is a fast-growing, strategically important component of Chewy's e-commerce platform and a key driver of incremental revenue. In this role, you'll demonstrate your deep expertise in front-end engineering to lead the development of engaging web experiences for both advertisers and internal users. As an early member of the team, you'll be part of shaping the technical strategy, owning core areas of the system architecture, and influencing the user experience across Chewy's retail platform and advertiser portal. You will also help lead the team through ambiguous technical decisions and play a critical role in establishing front-end engineering standard processes. This position presents a chance to drive a new project from the beginning, growing business value in a rapidly expanding sector of the company.