Poshmark

Poshmark

Senior Software Engineer II, Backend

US California (Redwood City) - Office · Senior

Sponsorship not specifiedDetected 44 days ago
JavaRubyDistributed SystemsBackend DevelopmentData StructuresAlgorithmsCode ReviewMongoDBElasticsearchAWSRabbitMQTest AutomationCommunicationProblem SolvingMentoring

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odds of building a lasting career here

34Risky
Cap-exempt (no lottery)0
Sponsors this role70
Entry-level history0
PERM / green-card track0
Lottery odds40
Fits your clock70

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Files H-1B transfers

2 transfer filings in the last year, covering 2 workers. Median labor-condition decision: 8 days. An employer that already files transfers is one that can take over an existing H-1B.

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About the role

  • ABOUT POSHMARK Poshmark is the leading fashion marketplace where style comes alive through discovery, self-expression, and human connection.
  • 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.
  • You will solve challenging engineering problems across distributed systems, make thoughtful technical trade-offs, and work closely with Product, QA, Infrastructure, and other engineering teams.

Responsibilities

  • Design, develop, test, deploy, and operate scalable backend services that support Poshmark's marketplace.
  • Independently own complex, well-defined technical initiatives from requirements and design through production rollout and ongoing support.
  • Make sound design and implementation decisions by evaluating scalability, performance, reliability, security, and operational trade-offs.
  • Develop and enhance APIs, data models, asynchronous workflows, and integrations across distributed systems.
  • Troubleshoot complex production issues, perform root-cause analysis, and implement sustainable fixes.
  • Participate actively in technical design reviews and provide constructive feedback through code reviews.
  • Collaborate with Product, QA, Infrastructure, and adjacent engineering teams to manage dependencies and deliver high-quality solutions.
  • Mentor junior engineers and support their technical development through design discussions, code reviews, and knowledge sharing.
  • Develop a strong working knowledge of Poshmark's architecture, technology stack, development practices, and production environment.
  • Independently deliver a complex backend feature or service from technical design through production.

Requirements

  • Bachelor's or Master's degree in Computer Science, Engineering, or a related technical discipline, or equivalent practical experience.
  • Proficiency in at least one backend programming language such as Ruby, JRuby, Java, or a comparable language.
  • Experience working with distributed systems and understanding their scalability, reliability, and performance considerations.
  • Experience with databases, data modelling, caching, search technologies, or messaging systems.
  • Experience writing clean, maintainable, well-tested, and well-documented production code.
  • Strong debugging and problem-solving skills, including experience diagnosing issues in production environments.
  • Strong written and verbal communication skills, with the ability to explain technical decisions and trade-offs clearly.
  • Participate in production support and on-call responsibilities as required by the team.

Nice to have

  • Experience with Amazon Web Services or another major cloud computing platform.
  • Experience with one or more of the following technologies: Ruby, JRuby, Java, MongoDB, Elasticsearch, RabbitMQ, and Linux.
  • Previous experience mentoring junior engineers, interns, or new team members.

Skills

  • Experience with service-oriented or microservices-based architectures.
  • Experience with performance optimization, capacity planning, and production incident response.
  • Experience with email, push notification, or other large-scale messaging technologies.
  • Ruby, JRuby, Java, MongoDB, Elasticsearch, RabbitMQ, and Linux.

Benefits

  • Take ownership of the quality, reliability, and operational health of assigned services or components.
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This listing is sourced directly from Poshmark's careers page and normalized into a canonical job model.