Sr. Software Engineer II, Web

Poshmark is looking for a Senior Web Engineer II to join our Buyer Pod. We are the team responsible for the core user journey: feed, discovery, search, and listing details. We don't just build interfaces; we build the engine that helps millions of users find and buy what they love. We are looking for an engineer who values the "how" as much as the "what." You should be someone who understands the browser's rendering pipeline and DOM underpinnings deeply, ensuring that our migration from Vue 2 to Vue 3 is not just a version bump, but a leap forward in performance and code quality.

Responsibilities

Architect & Execute: Lead small engineering pods to take complex features from discovery to production-scale delivery; The Vue Migration: Act as a key driver in our transition from Vue 2 to Vue 3, leveraging the Composition API and modern build tools (Vite/Webpack); High-Performance UI: Build responsive, accessible, and high-performance web applications with a focus on Core Web Vitals and efficient state management; Design Partnership: Collaborate closely with Product and Design to ensure every pixel serves the user experience; Technical Mentorship: Influence the technical roadmap and mentor junior/mid-level engineers through code reviews and architecture discussions

Requirements

5+ years of software development experience, with a focus on high-scale web applications; Deep understanding of JavaScript fundamentals (Event Loop, DOM API, browser rendering) beyond framework-specific abstractions; Proven experience with Vue 2 and Vue 3; Experience leading small teams or project "pods" and a track record of driving features to completion; A sharp eye for UI/UX and a passion for creating "great" web design rather than just "functional" code; Familiarity with modern build tools (Vite, Webpack), RESTful APIs, and distributed systems

Nice to have

Experience navigating the friction of migrating between the two is highly preferred