Software Engineer II, iOS

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 creative and motivated iOS Engineer II to help shape the future of our mobile applications. You’ll contribute to building intuitive, scalable, and reliable features that connect millions of users. This role is a great fit if you’re eager to grow as an engineer, thrive in a collaborative environment, and want to make an impact by delivering high-quality mobile experiences.

Responsibilities:

• Build, maintain, and iterate on Poshmark’s iOS application with a focus on usability and performance.

• Work closely with senior engineers, product managers, and designers to implement medium-complexity features.

• Participate in code reviews, share feedback, and contribute to team learning.

• Write maintainable, testable code and ensure reliability through unit tests and quality checks.

• Provide constructive input on product specs and collaborate cross-functionally to move projects forward.

• Take initiative to improve parts of the codebase, style guides, or processes with guidance from senior peers.

• Mentor newer team members informally by sharing knowledge and assisting with onboarding or best practices.

Requirements:

• 2–4 years of experience developing iOS applications.

• Strong understanding of Swift, with exposure to Objective-C as a plus.

• Familiarity with patterns like MVVM, Swift Concurrency, and SwiftUI is preferred.

• Knowledge of RESTful web services and connected application design.

• Solid foundation in computer science fundamentals such as data structures, algorithms, and software design.

• Experience using Git or other version control tools.

• Ability to balance multiple tasks while delivering within estimates.

• Excellent communication and collaboration skills, with a willingness to learn from peers and adapt to changing requirements.

• BS or MS in Computer Science or related field (or equivalent).

6-Month Accomplishments:

• Become familiar with Poshmark’s iOS ecosystem, tools, and workflows.

• Contribute to feature development with increasing independence.

• Build strong working relationships across Product, Design, QA, and Engineering.

• Participate actively in code reviews and team discussions.

12+ Month Accomplishments:

• Independently plan and deliver medium-complexity features.

• Provide meaningful improvements to code quality and team processes.

• Take on informal mentoring roles and contribute to team knowledge-sharing.

• Actively participate in recruiting through technical interviews.