Forward Deployed Engineer
Overview
At Lago, Forward-Deployed Engineers (FDEs) are engineers embedded with customers. They build, integrate, and optimize Lago in production environments: ensuring adoption, scalability, and impact.
Job Description
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.
Responsibilities
- - Own technical delivery for Tier 1 customers: from architecture design to deployment.
- - Build custom integrations, connectors, and workflows using Lago’s Ruby on Rails APIs, React, and TypeScript stack.
- - Design data ingestion pipelines and automation scripts (PostgreSQL, Redis, Kafka).
- - Configure and optimize billing, metering, and event processing setups tailored to customer environments.
- - Collaborate with Support Engineers on reliability handoffs and Core Engineering on product extensions.
- - Write reusable code, documentation, and best-practice templates for future implementations.
- - Surface recurring patterns or feature gaps to Product and Engineering for roadmap input.
- - Mentor customer teams on Lago’s architecture, SDKs, and deployment patterns.
Required Skills
- - 4+ years of experience working closely with APIs and SDKs (in Ruby/React would be a bonus but can be multiple languages)
- - Deep understanding of REST APIs, authentication, and integration patterns.
- - Strong SQL and data modeling skills (PostgreSQL, Redis, Kafka a plus).
- - Experience designing and deploying production-ready integrations.
- - Excellent written and verbal communication skills for both technical and non-technical stakeholders.
- - Proven ability to manage delivery timelines and coordinate across teams.
Benefits
- - Competitive compensation and early equity in a fast-growing company
- - 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
About the company
Lago is an AI-native billing platform designed to help companies manage complex pricing models with transparency and flexibility. Founded in 2021 and headquartered in Paris, Lago provides a unified system for handling subscriptions, usage-based billing, and hybrid pricing structures, enabling businesses to support both self-serve and enterprise sales workflows in a single platform. The platform synchronizes customer and billing data across existing business tools such as payment providers, CRMs, accounting systems, and ERPs, helping teams maintain accurate financial operations without fragmented systems. As an open-source alternative to solutions like Stripe Billing, Chargebee, and Recurly, Lago focuses on giving engineering and finance teams greater control over metering, pricing logic, and billing infrastructure while scaling with growing product complexity.
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