Sr. Software Engineer, Cloud Platform

Poshmark
US California
On-site

Who this role is best for

Aimed at mid-level engineers with cloud platform experience who thrive in iterative, data-driven environments.

Best fit for

  • Engineers with distributed systems expertise seeking high-traffic platform challenges.
    — “Build applications and services on top of a distributed cloud architecture
  • Candidates comfortable with NoSQL and queueing technologies in e-commerce contexts.
    — “using a combination of NoSQL data solutions, Queueing technologies
  • Developers who prioritize user experience and operational quality at scale.
    — “User-oriented focus and obsession with quality

Things to consider

  • Requires 4+ years of direct software engineering experience.
    — “4+ years of relevant software engineering experience

How to stand out

  • Demonstrate specific AWS optimizations in past high-traffic systems.
    — “Experience with Amazon AWS or other Cloud Computing platforms
  • Showcase Ruby/JRuby projects with measurable performance improvements.
    — “Experience with any or all of: Ruby, JRuby
  • Highlight notification system implementations in previous roles.
    — “Experience with email and or push notifications technology
Pace · Fast PacedCollaboration · HighAutonomy · MediumDecision Impact · TeamLevel · Senior

Derived from job-description analysis by Serendipath's career intelligence engine.

What success looks like

  • build and operate high-traffic platform
  • design and implement new product features
  • build, analyze, tune and enhance core components
Typical background
4+ years of software engineering experienceexperience with cloud computing platforms

Skills & requirements

Required

Distributed SystemsCloud ComputingNoSQLQueueing TechnologiesSearch InfrastructureData StructuresAlgorithmsSoftware Design

Preferred

RubyJrubyJavaHtml5JavaScriptCSSMongoDBElasticsearchRabbitmqLinuxEmail And Push Notifications

Stack & domain

RubyJrubyJavaHtml5JavaScriptCSSMongoDBElasticsearchRabbitmqLinuxUser-oriented FocusQuality ObsessionCloudEcommerceMarketplace

About the role

Original posting from Poshmark via Ashby

ABOUT POSHMARK

Poshmark is the leading fashion marketplace where style comes alive through discovery, self-expression, and human connection. Powered by a vibrant community of 165 million members, Poshmark brings real people and taste to shopping through a social experience shaped by shared discovery. Buying and selling fashion feels simple, joyful, and personal, while every item tells its own story. Poshmark empowers sellers to grow meaningful businesses, keeps fashion in circulation longer, and gives shoppers access to unique and trusted finds, from everyday pieces to one-of-a-kind vintage and luxury.

🎯 ABOUT THE ROLE

Poshmark is looking for a Senior Software Engineer to support the rapid growth of our Cloud Platform and marketplace. In this role, you’ll help build and operate a high-traffic, fast-growing platform while receiving mentorship and guidance from experienced engineers. You’ll work at scale and push the boundaries of cloud-based technologies to help power Poshmark’s continued growth.

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.

⚙️ WHAT YOU’LL DO

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.

💪 WHAT YOU’LL BRING

  • BE or MS in Computer Science or related technical discipline (or equivalent). Solid foundation in computer science with strong competencies in data structures, algorithms and software design
  • 4+ years of relevant software engineering experience through projects or internships
  • Experience with Amazon AWS or other Cloud Computing platforms is preferred
  • Experience with any or all of: Ruby, JRuby, Java, HTML5, JavaScript, CSS, MongoDB, ElasticSearch, RabbitMQ, Linux
  • User-oriented focus and obsession with quality
  • Experience with email and or push notifications technology a plus

Source: Poshmark careers (Ashby)

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