Sofware Engineer II, Web

About Poshmark

Poshmark is a leading fashion resale marketplace powered by a vibrant, highly engaged community of buyers and sellers and real-time social experiences. Designed to make online selling fun, more social and easier than ever, Poshmark empowers its sellers to turn their closet into a thriving business and share their style with the world. Since its founding in 2011, Poshmark has grown its community to over 130 million users and generated over $10 billion in GMV, helping sellers realize billions in earnings, delighting buyers with deals and one-of-a-kind items, and building a more sustainable future for fashion. For more information, please visit www.poshmark.com, and for company news, visit newsroom.poshmark.com.

Responsibilities

• Architect, build, iterate, and maintain scalable, high-quality web applications.

• Own and deliver features independently with minimal supervision.

• Partner closely with Product, Design, QA, and other Engineering teams to build intuitive, performant, and user-friendly web experiences.

• Understand product requirements, provide accurate estimates, and write clean, maintainable, and testable code.

• Own critical parts of the web platform that have high visibility and business impact.

• Participate actively in design discussions, code reviews, and technical decision-making.

6-Month Accomplishments

• Gain a strong understanding of Poshmark’s web architecture, tech stack, and development processes.

• Contribute effectively to web feature development and enhancements.

• Collaborate closely with cross-functional partners including Product, Design, QA, DevOps, and Backend teams.

• Write high-quality, well-tested code that adheres to engineering best practices.

• Participate in technical discussions and provide meaningful inputs during code reviews.

12+ Month Accomplishments

• Drive end-to-end development of complex web features independently.

• Identify and propose improvements to web application performance, scalability, and code quality.

• Take ownership of key modules or components within the web platform.

• Mentor junior engineers and support their technical growth.

• Contribute to improving engineering standards, tooling, and best practices.

Desired Skills & Experience

• Strong foundation in computer science fundamentals, including data structures, algorithms, and software design.

• 3–5 years of relevant software engineering experience, with at least 3–4 years building modern, responsive web applications.

• Proficiency in JavaScript, HTML, and CSS, with strong experience in building component-based UIs.

• Hands-on experience with modern web frameworks such as React, Vue.js, or Angular.

• Experience with backend-for-frontend or full-stack technologies such as Node.js or Ruby on Rails is a plus.

• Solid understanding of RESTful APIs and experience integrating web applications with backend services.

• Experience with state management, performance optimization, and browser compatibility.

• Familiarity with cloud platforms (preferably AWS) and NoSQL databases (e.g., MongoDB) is desirable.

• Experience writing unit and integration tests for web applications.

• Proficient understanding of version control systems such as Git.

• Strong communication skills and ability to work effectively in a cross-functional, collaborative environment.