Software Engineer, Seller - Onboarding (Backend)

  • Locations
    • Remote
    • Toronto, CA
  • Date Posted
  • Nov. 14, 2021
  • Function
  • Software Engineering
  • Sector
  • Fintech

Build the world’s fastest Identity and Checkout products

Company Mission

Our mission is to make buying online faster, safer and easier for everyone. Fast Login and Fast Checkout enable a one-click sign-in and purchasing experience that makes it easier for people to buy and merchants to sell. The company’s products work on any browser, device or platform to deliver a consistent, stress-free purchasing experience. Fast is entirely consumer-focused and invests heavily in its users’ privacy and data security. Headquartered in San Francisco but open to a globally remote workforce, we are a founders-led, privately held company funded by Stripe, Index Ventures, Susa Ventures and other world-class investors.

Team & Role Summary

The Seller group makes sure that merchants can quickly get Fast checkout up and running, that they can provide timely support to their buyers, and that they have visibility into their business’ performance. Each of the Seller teams is cross-functional and responsible for the end-to-end delivery of features related to onboarding, sales monitoring and reporting and buyer support. These teams will also be on the forefront of innovation as we expand into new markets and add new types of sellers.

Our Onboarding team within the Seller group is responsible for creating the flow through which new sellers onboard to Fast. Sellers provide information about their business, banking details, organization, and complete KYC. We will be iterating on this flow heavily to improve some of the most business-impacting metrics at Fast, which is the ability to scale, and grow our seller base.


  • Develop and simplify code across the stack with a focus on backend utilizing Go (Golang), Java and Python
  • Design and improve the code base with scalable & testable code
  • Collaborate with product, design and the broader engineering team on features and functionality
  • Evaluate product launch related use cases from a technical & customer perspective
  • Participate in team meetings covering release and build roadmaps and be an active voice in the discussion


  • CS degree or related field, or equivalent experience
  • Experience as a full-stack software engineer
  • Experience utilizing Go in a professional environment
  • Familiarity with languages commonly utilized to create solutions at scale (Java, Python, Scala, JavaScript, etc)


  • Experience with building applicants that have millions of concurrent users
  • Experience with distributed systems and/or microservices
  • Familiarity with Kubernetes
  • Experience with JavaScript
  • Benefits and Perks - Because People Matter
  • We are committed to diversity and inclusion, and demonstrate our values through equitable pay, fantastic benefits, and access to all reasonable accommodations. See what Fast can offer you:
  • Globally remote with flexible work schedules to fit your needs

Generous and Competitive Equity grant

People-focused, flexible PTO

  • Frequent inclusive events scheduled to allow everyone to express their voice (or dance skills)
  • Monthly exercise, internet stipends and snack perks