Lago is the open-source platform that helps engineers build better monetization systems. We enable software teams to build customizable and scalable usage metering, subscription management, billing, invoicing, and payment systems.

Lago is the leader of our category on Github (7k+ stars), won « Product of the month » on ProductHunt, and is used by leading companies such as Mistral, Together, Groq, Laravel.

Lago’s founding team previously built and scaled the home-grown monetization system of fintech unicorn Qonto from pre-launch to series D.

We're a lean, ambitious team of 25 today (mostly engineers), and we're all about Product, FinTech and Open Source.

Our Product is really tech-driven, as we process and structure a lot of data, and build for developers so we have numerous exciting back-end challenges!

What you'll do

• Contribute daily to all parts of our code base, using our development workflow

• Tackle a wide variety of technical problems throughout the stack

• Help grow the back-end team

• Work with out Product Team, and our Front-end Engineers to understand customer needs and challenges

• And come up with technical solutions to create and improve the best features, and our architecture

The ideal candidate will have

• Strong knowledge of Ruby (at least 6 years hands-on experience)

• Experience working with lots of data and event-driven environments

• A genuine passion for Open-Source: if you’ve contributed to OSS projects or used OSS tools, let us know!

• Bonus: you’ve worked on billing or tax projects: whether it was to implement a billing system, or maintain it, or integrate it with business tools (e.g., a CRM, Finance tools)

• A real appetite for the early stages of co-creating a product and shaping Lago's future