Senior Backend Developer (Ruby on Rails)

$120,000-$220,000 / YEAR


The Developer Union is partnering with Instacart. We're looking for seasoned Backend Engineers with experience in building backends for web and mobile applications at scale. We work on a range of interesting and challenging problems, from supporting thousands of concurrent shoppers and processing millions of data points in real time, to building tools for ad campaigns and sign-ups.

The pandemic has accelerated Instacart's growth exponentially. Instacart is now second highest valued technology startup, valued at $34 billion (just behind SpaceX) and is anticipated to IPO in the near future. Read More

This is 3 - 4 month contract opportunity that could extend much longer. You will be building a brand new product with a React front-end and Ruby on Rails backend.


  • Be part of a distributed team, with a large amount of ownership and responsibility for managing things directly. 100% Remote forever
  • Ship high-quality solutions with a sense of urgency and speed.
  • Work closely with product managers, other teams, and both internal and external stakeholders, owning a large part of the process from problem understanding to shipping the solution.
  • Have the freedom to suggest and drive organization-wide initiatives.



  • Experience with Ruby on Rails
  • Strong knowledge of SQL
  • Experience with relational databases [Postgres / MySQL]
  • Experience creating systems at large scale


  • 7+ years relevant web development experience
  • Excited by constantly learning new technologies & skillsets - thrives in a collaborative team environment
  • Ownership over systems and team that you work on