USD per year
Lago - Forward Deployed Engineer
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 9,000 stars on GitHub, a testament to our active and growing developer community. Companies such as PayPal, CoreWeave, 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, Forward-Deployed Engineers (FDEs) are engineers embedded with customers. They build, integrate, and optimize Lago in production environments: ensuring adoption, scalability, and impact. This role blends engineering depth with delivery ownership and customer collaboration. You’ll write code, deploy systems, and translate real-world use cases into product-ready insights. FDEs are not part of the reactive support queue, and they’re not isolated in core product development. They sit at the intersection of engineering and delivery: the engineers who turn product flexibility into customer success.
What you’ll be doing
- 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.
Who you are
- A software engineer/technical expert who thrives in hands-on, customer-facing environments.
- Experienced in Ruby on Rails, React or both.
- Enjoys designing integrations, data pipelines,and technical architectures.
- Communicates clearly,balance technical detail with customer empathy.
- Resourcefuland comfortable navigating ambiguity.
- Eagerto work across code,d elivery,and customer experience.
Who you’re not
- You’re not part of reactive support queues: you plan,b uild,and deliver.
- You’re not detached from customers: you embedand advise.
- You’re not limitedto writing specs: you shipand document your work.
- You’re not chasing short-term fixes: you design systems that scale.
Requirements
- 4+ years of experience working closely with APIsand SDKs (in Ruby/React would be a bonus but can be multiple languages)
- Deep understanding of REST APIs authentication,and integration patterns.
- Strong SQLand data modeling skills(PostgreSQL Redis Kafka a plus).
- Experience designingand deploying production-ready integrations.
- Excellent writtenand verbal communication skillsfor both technicaland non-technical stakeholders.
- Proven abilityto manage delivery timelinesand coordinate across teams.
Nice to have
- Experiencein technical consulting professional servicesor customer engineering.
- Familiaritywith Terraform Dockeror CI/CD environments.
- Backgroundin billing paymentsor developer platforms.
- Prior contributionto open-source or customer-led product delivery.
Growth path
Technical Senior → Core Engineering / Product Architecture. Cross-functional Product Manager. Leadership FDE Lead → Head of Professional Services / Customer Engineering. FDEs formthe bridge between engineeringand real-world adoption turning technical capability into customer outcomes.
Why Join Lago?
- Workon a product lovedby engineersand product teams
- Joina leanand ambitious team building foundational infrastructure
- Contributeto an open-source projectwith real-world impact
- Competitive compensationande arly equity ina fast-growing company
Readyto Buildwith Us? If you’re excitedabout joininga high-talent teamto solve meaningful problemsand help businesses thrive,we’d love to hearfrom you.Apply todayand let’s build something remarkable—together. Location type Remote Primary Location Remote USA Team GTM Work Type Full Time/Permanent Contract Salary $90 000-$110 000 USD per year
Lago is the AI-native billing platform that gives teams full transparency, control and flexibility to manage and scale any pricing model. It helps engineering and business teams collaborate on complex billing through the API and a visual interface. Lago supports hybrid plans, usage-based billing, custom contracts, prepaid credits, entitlements, coupons, and more. It offers enterprise-grade security, flexible deployment options including self-hosting, open-source code, and extensive integrations with payment providers, accounting systems, CRMs, ERPs, and other tools.
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