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.

Department: Product & Engineering

Reports to: Co-founder (Raffi Sarkissian)

Location: Paris (Remote in France also considered)

Overview

Lago is hiring a Head of Engineering to lead and scale its engineering organization through the next stage of growth.

You’ll architect systems for scale, build a high-performing team, and embed reliability and ownership into how we operate.

This role combines technical depth and organizational leadership

— designing architecture, scaling delivery, and creating a culture where engineers do the best work of their careers.

What You’ll Be Doing

• Build and scale a world-class engineering org (~20 FTEs today, +50–100% in 12 months).
• Hire, mentor, and grow top engineering talent.
• Drive predictable, high-velocity delivery and continuous improvement.
• Architect systems for scale, reliability, and performance.
• Oversee infrastructure, monitoring, and incident response.
• Shape Lago’s long-term technical strategy with founders and product leads.
• Foster a culture of clarity, feedback, and high agency.

Who You Are

• A technical leader with a background in backend, infra, or developer tools.
• Builder mindset: you create structure that accelerates on the mid-term, not slows down.
• Strong coach and communicator who thrives in ambiguity.
• Operates with high ownership and pragmatism.
• Aligned with Lago’s values: clarity, impact, and continuous learning.

Why Join Lago?

• Work on a product loved by engineers and product teams
• Join a lean and ambitious team building foundational infrastructure
• Contribute to an open-source project with real-world impact
• Competitive compensation and early equity in a fast-growing company

Ready to Build with Us?

If you’re excited about joining a high-talent team to solve meaningful problems and help businesses thrive, we’d love to hear from you. Apply today and let’s build something remarkable—together.