The Role

We’re hiring a Forward Deployed Engineer to join our Product team.

This role is ideal for engineers who enjoy solving real-world customer challenges hands-on. You’ll work directly with users to support their implementation of Lago, guide them through architectural and product decisions, and build or adapt code that helps them succeed.

You’ll act as a bridge between the user and Lago’s internal teams — writing production-level code, improving onboarding assets, supporting complex integrations, and channeling user feedback directly into our product development cycle.

Responsibilities

• Lead technical implementation efforts for strategic users — from initial architecture reviews to production deployment
• Write scripts, integration templates, and lightweight services to support custom use cases
• Contribute to Lago’s open-source SDKs, example repositories, and public documentation
• Collaborate with users’ engineering teams to resolve complex integration challenges
• Identify edge cases and implementation patterns, and feed them into product discussions
• Build internal tooling and utilities that support faster and more robust deployments
• Act as a hands-on technical advisor to both internal and external stakeholders

Requirements

• 3+ years of experience as a Software Engineer or in a technical role working with external users
• Strong backend skills, especially in Ruby on Rails
• Comfortable with PostgreSQL, Docker, Sidekiq, Clickhouse and event-based or asynchronous processing
• Familiarity with RESTful APIs, webhooks, authentication flows, and OpenAPI specifications
• Experience working with background jobs, queuing systems, and production environments
• Excellent debugging and communication skills
• Based in or willing to relocate to Paris, with in-office presence at least 3 days a week
• Bonus: experience in billing infrastructure, SaaS metering, or open-source development

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.