Lead Engineer - AI-Native Email App

This position is listed on behalf of a partner company, who manages all applications and next steps. Our partner is looking for a Lead Engineer - AI-Native Email App based in United States. This is a hands-on technical leadership opportunity for an engineer who wants to shape complex products and systems from architecture through production. You will take ownership of major engineering initiatives while remaining deeply involved in coding, prototyping, debugging, and technical decision-making. The role spans scalable systems, APIs, databases, infrastructure, reliability, and modern AI-enabled products. You will work closely with engineering, product, design, and AI teams in a fast-moving, globally distributed environment. Beyond delivering features, you will help establish stronger engineering practices, improve team velocity, and raise the technical bar. This role is ideal for a pragmatic technical leader who combines strong engineering depth with product awareness and a bias toward ownership.