Sr. Software Engineer II, Web

Poshmark

Redwood City, California, United States permanent

Posted: February 11, 2026

Required Skills

Job Description

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.

Poshmark is looking for a talented and creative Senior Web Engineer. The candidate is expected to create web applications that have a simple user interface and solid code that touches the lives of millions of users. The role will be dynamic and varied, requiring a versatile self-starter willing to dive into multiple initiatives. This role will provide an excellent opportunity to implement code that may run in production, at scale.

While having the opportunity to work with a talented team to rapidly roll out changes and measure their impact, while being mentored and guided.

Responsibilities

• Responsible for creating web application features.

• Develop a scalable, high performance and maintainable code.

• Work with web technologies built on Web, database, and caching technologies.

• Tune the performance for the web application.

6-Month Accomplishments

• Get familiar with the existing web architecture and code base.

• Contributing to and taking ownership of Web features.

• Have a good collaboration within the team. Also, with other teams like Product, Design, QA, devOps etc

• Should participate in technical discussions and be able to evaluate the design and architecture of the solution to the problems.

12+ Month Accomplishments

• Come up with ideas/changes to improve the application both from performance and scalability perspective.

• Get involved in the application architecture discussions and propose changes that would improve the existing infrastructure.

• Should be able to independently drive feature development.

Desired Skills

• 5 years software development experience, including at least 2 years in building easy to use, responsive web applications

• Experience in any of the following is highly desirable - Node, Vue, React, Angular, Ruby on Rails, NoSQL technologies (i.e. MongoDB), AWS.

• Skills in building web development stack.

• Understanding and designing RESTful web services.

• Bachelor’s degree in Computer Science or a related field

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