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Come work with us! Building the worlds largest platform for like-new clothing is a unique and exciting opportunity and a chance to improve the lives of families while reducing our impact on the planet.

Job Openings

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thredUP Inc.
114 Sansome St
5th Floor
San Francisco, CA 94104

Senior Software Engineer (Rails/React) to Supply Growth Team

Kiev, Ukraine - Full-time

apply now
About the Role
At thredUP our mission is to inspire a new generation of consumers to think secondhand first, and we want your help to design and evolve applications that power the growth in our marketplace. From integrating with a real-time seller scoring/segmentation/targeting system, to evolving our supplier partnership platform, to optimizing our top-of-the-funnel Cleanout experience, there are a huge number of challenging and fun projects on the horizon that you can make an impact on.  


  • Architect, build, maintain, and improve our seller related website and email experiences.
  • Work with ML Engineers and Data Scientists to integrate different optimization models models across website and email systems.
  • Extend our tracking systems across website and email channels.
  • Build tooling around monitoring, logging, automated testing and A/B testing. Collaborate with your peers and other teams to teach, learn and execute efficiently.
  • Contribute to improving our processes and engineering culture.

What We Care About

  • Ownership, trust, responsibility and proactiveness.
  • A data-driven approach towards continuous improvement in the user experience.
  • Building scalable systems using best engineering practices, while understanding the tradeoff between time and perfection.
  • Speaking UP. Thinking Big. Influencing Outcomes. Being Paranoid.


  • Proficiency with Ruby and Ruby based Frameworks (Rails, Grape, Sinatra).
  • Proficiency with at least one front-end JS framework (We use React/Redux).
  • Exceptional track record in delivering quality engineering solutions at different levels of the stack.
  • Strong experience in distributed systems design and best practices.
  • Strong experience with continuous integration, test automation, and monitoring.
  • Ability to work in a cross-functional team.
  • Bonus: Native mobile development experience.