Staff Backend Engineer
Waltham, MA 
Posted 8 days ago
Job Description

6 River Systems (6RS) is a Shopify (SHOP) company leading the way to faster fulfillment. E-commerce has changed the world and our solutions power winning warehouses of the future. We're revolutionizing warehouse automation with collaborative mobile robots driven by artificial intelligence and advanced cloud-based software.

As a Staff Software Engineer at 6RS, you will design and build APIs and services that are scalable and give real-time visibility into the warehouse operations. These APIs ensure our customers hit mission critical fulfillment deadlines and feed data about the performance of the 6RS robotics systems.

  • Design and implement new APIs to expose 6RS features to users
  • Collaborate with multiple internal teams to create APIs that support the 6RS web application
  • Design and implement event driven architecture to support 6RS growth and scale
  • Implement hardening of external APIs through caching, rate limiting, and real time streaming endpoints
  • Create scale and load testing procedures to ensure the API can meet customer demand


  • 5+ years of experience with one or more of the following: JAVA, Golang, JavaScript and/or C++ using Object Oriented Design Principles
  • Practical experience developing and debugging event sourcing based architectures
  • Ability to understand large cloud-based systems and how individual pieces fit together
  • Experience creating robust, resilient and high scale software systems
  • Curiosity to learn different software technologies. e.g. Kubernetes, Microservices Architecture, Databases, ROS, React

About 6 River Systems
Founded in Waltham, Massachusetts in 2015, 6 River Systems is a leading collaborative mobile robotics fulfilment solution and part of global commerce company Shopify. Founders Jerome Dubois and Rylan Hamilton were previously executives at Kiva Systems (now Amazon Robotics). The 6 River Systems solution is operating in more than 20 facilities in the U.S., Canada and Europe, fulfilling millions of units each week for companies including Lockheed Martin, CSAT Solutions, ACT Fulfillment, DHL, XPO Logistics, and Office Depot. To learn more, visit

About Shopify
Shopify is a leading global commerce company, providing trusted tools to start, grow, market, and manage a retail business of any size. Shopify makes commerce better for everyone with a platform and services that are engineered for reliability, while delivering a better shopping experience for consumers everywhere. Headquartered in Ottawa, Canada, Shopify powers over one million businesses in more than 175 countries and is trusted by brands such as Allbirds, Gymshark, PepsiCo, Staples, and many more. For more information, visit

6 River Systems is proud to be an Equal Employment Opportunity (EEO) employer. It is the policy of the Company to provide equal employment opportunities to all qualified applicants without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, age, protected veteran or disabled status, genetic information, or any other legally recognized protected basis under federal, state, or local law.


Job Summary
Start Date
As soon as possible
Employment Term and Type
Regular, Full Time
Required Experience
5+ years
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