Senior Backend Engineer

Lago
$70,000 - $100,000Remote

About The Position

We're looking for a Senior Backend Ruby Engineer to contribute to Lago's core product and help scale our open-source billing infrastructure. You'll work across the full backend stack, collaborate closely with Product and Frontend, and help shape how we build and evolve the platform.

Requirements

  • 6+ years of hands-on experience in software engineering, with strong Ruby expertise
  • Experience working with event-driven systems and high-data-volume environments
  • Familiarity with background job frameworks (e.g. Sidekiq) and message queues
  • Comfort with REST APIs, webhooks, and data integrations
  • Strong written and verbal communication skills
  • A mindset of ownership, curiosity, and resilience

Nice To Haves

  • Experience contributing to or supporting open-source projects
  • Familiarity with billing systems, fintech, or developer tools
  • Experience with PostgreSQL, Redis, Kafka, or similar infrastructure
  • Exposure to containerised environments (Docker, AWS, CI/CD)

Responsibilities

  • Contribute daily to all parts of our codebase, using our development workflow
  • Tackle a wide variety of technical problems throughout the stack
  • Help grow the back-end team
  • Work with our Product Team and Front-end Engineers to understand customer needs and challenges
  • Come up with technical solutions to create and improve our best features and architecture

Benefits

  • Competitive salary and equity for employees based in France
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