Sr. Rails API Engineer

thredUP, San Francisco, CA

Makes secondhand shopping a cinch

About thredUP
thredUP, based in San Francisco, is the leading online marketplace for buying and selling like-new women’s and kids’ clothing. thredUP was founded in 2009 and currently employs nearly 1,000 people across its corporate office and four distribution centers. To date, thredUP has raised $131 million from top-tier investors, most recently closing an $81M equity investment from Goldman Sachs.

thredUP’s mission is to inspire a new generation of consumers to think secondhand first. We are achieving this mission being the most convenient solution for busy moms to “clean out” their closets, get organized and do good in the process. thredUP also has the widest and most affordable selection of secondhand clothes in all the name brands customers want to own, in like-new condition.

thredUP is growing rapidly, and has built a world-class team that includes investors and executives from Netflix, Virgin, DVF, GAP and Sephora. We are building the leader in the online secondhand apparel market, and we are just getting started.

About the Role
At thredUP, we’re working to revolutionize the clothing industry and we're looking for an experienced engineer to help architect the future of our APIs. If you want to own the vision of our APIs and work with an engineering team that cares a lot about each other, our culture, the quality of our code, and building a successful company, we'd love to hear from you.


  • Help map out the future constellation of APIs within the context of our technical roadmap.
  • Facilitate API needs for ongoing feature development.
  • Help guide teams during architecture planning sessions.
  • Work with engineers to design & formalize data contracts.
  • Formalize best practices, documentation, and versioning regarding APIs.


  • 5+ years developing production-level APIs
  • Experience with Ruby and Ruby based frameworks
  • (Bonus) Experience with Node.js
  • (Bonus) CS degree
  • (Bonus) Experience within our stack’s technologies.
  • (Bonus) E-commerce engineering experience.
  • (Bonus) Engineering mentorship experience.
Remote work from US or Canada is ok

About thredUP

thredUP is the nation's leading online marketplace for women's and kids' like-new apparel. Over 25,000 brands, ranging from Gap to Gucci, are listed on thredUP.com at prices up to 90 percent off retail. 

Want to learn more about thredUP? Visit https://www.thredup.com/