The Senior Staff Software Engineer serves as the technical lead for the core chat experience on mobile platforms. This role involves owning the technical direction for iOS and Android applications while shaping the evolution of the chat interface across mobile and web. The position requires writing code, establishing architectural direction, and making complex technical decisions. Collaboration with product, design, and partner teams is essential to deliver a high-quality user experience. The engineer also focuses on building systems that maintain performance and polish as the product evolves.

Candidates must possess deep expertise in at least one mobile platform, specifically iOS, including knowledge of rendering, performance, memory, and text layers. The role requires a proven track record of leading technical direction across teams and shipping consumer-scale mobile applications. Proficiency in implementing quality systems such as performance budgets and observability is necessary. A minimum of a bachelor's degree or an equivalent combination of education, training, and experience is required.