Software Engineer II, Cloud Platform

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.

We are looking for a Software Engineer II to join our Core Platform team and contribute to
building reliable, high-performance backend systems that power our fast-growing
marketplace. This is an exciting opportunity to work with experienced engineers and gain
hands-on experience developing cloud-native services used by millions of users every day.

Responsibilities:

• Design, develop, and maintain backend services that support Poshmark’s marketplace experience.

• Collaborate with peers and senior engineers to implement scalable, efficient, and maintainable systems.

• Write clean, well-documented, and well-tested code following best practices.

• Participate in code reviews and learn from feedback to continually improve.

• Troubleshoot and fix issues across distributed systems in production environments.

• Contribute to improving development processes, tooling, and team workflows.

6-Month Accomplishments:

• Become proficient with Poshmark’s tech stack, development tools, and codebase.

• Ship production-quality code with guidance from senior team members.

• Take ownership of small to medium-sized components or features.

• Collaborate effectively with Product, QA, and Design teams on feature delivery.

12+ Month Accomplishments:

• Independently deliver features from design to production.

• Contribute to performance improvements and scalability initiatives.

• Develop a strong understanding of Poshmark’s system architecture and make data-driven technical decisions.

• Participate in technical discussions and contribute ideas to improve platform reliability and efficiency.

• Mentor interns or new hires joining the team.

Requirements:

• 2 - 4 years of professional experience (including internships) in backend software engineering.

• Strong understanding of computer science fundamentals — data structures, algorithms, and software design principles.

• Proficiency in at least one backend language (e.g., Ruby, Java, Python, or Go).

• Familiarity with RESTful APIs, databases (SQL/NoSQL), and caching or message-queue systems.

• Interest in cloud technologies (AWS, GCP, or similar) and scalable architectures.

• Bachelor’s degree in Computer Science or a related field, or equivalent practical experience.

• Collaborative, curious, and motivated to learn and grow within a fast-paced environment.