About the Company:

At Lago, we’re on a mission to make billing simpler, more transparent, and more adaptable for SaaS companies.

As the leading open-source billing platform, we empower businesses to 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, reflecting strong confidence in our vision and growth.

Our platform has garnered over 8,000 stars on GitHub, a testament to our active and growing developer community. Companies such as PayPal, Synthesia and Mistral.ai choose Lago for their billing.

We’re a team of ambitious, focused individuals who work together to 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 adapt quickly. 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.

Salary Range:

60,000-100,000 EUR (gross)

Job Type:

Remote

Employment Type:

Full-time

Job Description:

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

Position Requirements:

• 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

Working Conditions:

• Location: EU (+2h/-2h from Paris)
• Work Type: Full Time/Permanent Contract (via EOR)
• Remote-friendly with regular workations.