People, Person, Computer, Electronics, LCD Screen, Laptop, Pc


Senior Software Engineer, Core InfrastructureRedwood City, California, United States

Senior Software Engineer, Core Infrastructure

Redwood City | California | United States

With millions of shoppers and over a million sellers, Poshmark is the largest community marketplace for fashion where anyone can buy, sell, and share their personal style.

Poshmark is looking for a talented Senior Software Engineer, Core Infrastructure who is excited about the challenge of building and scaling systems as we rapidly iterate on our product. You will be a member of the Core Infrastructure team that builds the backend of the Poshmark Cloud Platform, an infrastructure that spans hundreds of machines on AWS. You will have the opportunity to push the limits of cloud-based technologies to power our explosive growth.

While familiarity with our stack is a plus, we care more about hiring people that can learn new technologies, and adapt quickly.


Build scalable, service-oriented infrastructure on AWS using the latest open source tools and technologies
Design and improve architecture in order to ensure horizontal scalability at all layers
Implement APIs and services for use by other developers
Resolve issues related to performance at all tiers of the application
Protect user accounts and data by implementing security best practices
Develop best practices and tools to enable robust delivery of features
Desired Skills

5+ years with infrastructure, back-end experience
You have worked on and/or understand distributed systems, and large scale engineering challenges
Solid foundation in computer science with strong competencies in data structures, algorithms, and software design
Understanding of multithreading, concurrency, and parallel processing technologies
Skilled with databases (NoSQL in particular)
Familiarity with frameworks for caching, queuing, RPC, and distributed data storage
Experience with cloud computing platforms, such as Amazon Web Services (AWS)
Experience with any or all of: JRuby, Java, Ruby, MongoDB, Elasticsearch, AMQP, Redis, and Linux/Unix environments
Understanding of search engine internals, and expertise with Lucene/Elasticsearch is a plus
BS, MS or PhD in Computer Science or related discipline
Why Poshmark?

Founded in 2011, Poshmark is the largest social marketplace for fashion where anyone can buy, sell and share their style with others. Poshmark's mission is to make shopping simple and fun by connecting people around a shared love of fashion, while empowering entrepreneurs to become the next generation of retailers. Recognized as the go-to shopping destination for millennials, Poshmark's community of over two million Seller Stylists help shoppers discover the perfect look from over 25 million items and 5,000 brands. The company is backed by the world's leading venture capital institutions including Mayfield, Menlo Ventures, GGV Capital, Inventus Capital, SoftTech VC, Union Grove Venture Partners, Shea Ventures and AngelList. For more information, please visit, or find us on Instagram, Twitter, Pinterest and Snapchat.

Here's what we'll set you up with:

A team that is invested in your career growth and training
Competitive salary and equity, based on experience
Fully sponsored health, dental and vision plans
A 13" MacBook Air and smartphone reimbursement
Work alongside world-class talent
Flexible Vacation / Paid Time Off Policy
Parental Leave
Healthy and exciting lunches and snacks offered daily
Personal Style Encouraged (or not, whatever you're in to)
Fun company happy hours, parties, and offsite events

I'm interested

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