About Lago

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.

Overview

At Lago, Support Engineers are core engineers operating at the edge of production.

They debug real customer environments, ship fixes, and ensure Lago runs reliably at scale.

This is not a ticketing function: it’s hands-on software engineering.

You’ll dive into Ruby on Rails, PostgreSQL, Redis, Kafka, Clickhouse and our React front-end to find, fix, and prevent production issues. You’ll collaborate daily with Core Engineering, Product, and Forward-Deployed teams to turn every customer interaction into product insight and reliability improvement.

You own reliability. You fix what’s broken. You strengthen the system for everyone.

What you’ll be doing