Job Description
About Lago At Lago, we're on a mission to make Monetization simpler for tech companies. As the leading open-source billing platform, we help businesses build flexible pricing models and scale with confidence. We've raised over $22 million in funding from top-tier investors including Y Combinator and FirstMark . Our platform has garnered around 10K stars on GitHub , a testament to our active and growing developer community. Companies such as PayPal, CoreWeave, Synthesia, and Mistral.ai choose Lago for their billing. And we have barely spent any money on Marketing or Ads so far. We're a team of ambitious, focused individuals who solve hard problems with excellence and accountability. At Lago, we value reliability and proactivity . We trust each other to own tasks, drive them to completion, and continuously improve them. While we encourage you to try fast and “fail fast” , we also expect you to learn fast : make mistakes, but don't make the same one twice. If you're excited by challenges and want to grow alongside a high-performing, supportive team, this is the place for you. Overview 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. What You'll Be Doing 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 Who You Are Strong knowledge of Ruby (at least 6 years hands-on experience) Experience working with large volumes of data and event-driven environments A genuine passion for Open-Source: if you've contributed to OSS projects or used OSS too
