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 , 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.

What you'll do

• Own product design end-to-end, from problem framing to shipped product.

• Design complex B2B workflows across billing, pricing, metering, invoicing, subscriptions, wallets, and analytics.

• Turn messy, technical, and ambiguous problems into clear, intuitive product experiences.

• Prototype quickly to test ideas, clarify direction, and accelerate decision-making.

• Partner closely with engineers during implementation to make sure design quality survives shipping.

Who you are

• You ship fast and stay in motion: you'd rather get something in front of users this week than perfect it for a month.

• You elevate craft while moving fast: pixels, copy, empty states, edge cases, and interaction details matter to you.

• You're AI-native in how you work: you use AI tools to extend what you can design, prototype, write, research, and build.

• You stay close to the market: you design for where product and AI capabilities are heading, not only what Lago can do today.

• You communicate clearly: you align people, challenge assumptions constructively, and create clarity when things are ambiguous.

Requirements

• 5+ years of experience designing and shipping high-quality digital products, ideally in B2B SaaS, developer tools, fintech, infrastructure, or complex workflow products.

• A strong portfolio showing end-to-end product thinking: problem framing, UX exploration, visual design, interaction details, and shipped outcomes.

• Exceptional visual and interaction design skills across typography, layout, information hierarchy, states, microcopy, and accessibility.

• Ability to prototype quickly in Figma, code, AI-assisted tools, or other environments to explore ideas and accelerate decisions.

• Strong communication skills in English, both written and spoken, with the ability to align people, explain trade-offs, and defend a design direction clearly.

Why Join Lago?

🔥 Impactful role: Take the lead on various complex technical projects in a fast-growing open-source company.

🙏 Work with the best: We pride ourselves on hiring top tier technical and business talent, this is a chance to collaborate daily with both.

💸 Shape the future of fintech : Be part of a fast-growing company building the best open-source billing platform.

Ready to Work 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.

Location type: Hybrid
Primary Location: Paris office
Secondary Location: Remote Europe
Team : Product
Work Type: Full Time/Permanent Contract
Salary: 60,000-80,000 EUR per year

(Applicants must be based in the location specified for this role. Applications from other locations will not be considered.)