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<h1><strong>About Lago</strong></h1><p style="min-height:1.5em">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 <strong>$22 million in funding</strong> from top-tier investors including <strong>Y Combinator</strong> and <strong>FirstMark</strong>, reflecting strong confidence in our vision and growth. Our platform has garnered over <strong>9,000 stars on GitHub</strong>, a testament to our active and growing developer community. Companies such as <strong>PayPal</strong>, <strong>CoreWeave</strong>, <strong>Synthesia</strong> and <a target="_blank" rel="noopener noreferrer nofollow" href="http://Mistral.ai"><strong>Mistral.ai</strong></a> 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 <strong>reliability and proactivity</strong>—we trust each other to own tasks, drive them to completion, and adapt quickly. While we encourage you to <strong>try fast and "fail fast"</strong>, we also expect you to <strong>learn fast</strong>: 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.</p><p style="min-height:1.5em"></p><h1><strong>Overview</strong></h1><p style="min-height:1.5em">We're looking for a Senior Frontend Engineer to own and scale Lago's frontend application. You'll work closely with our Product and Backend Engineering teams to build and ship high-quality features, maintain our design system, and ensure the frontend is reliable, performant, and consistent at scale.</p><p style="min-height:1.5em"></p><h1><strong>What You'll Be Doing</strong></h1><ul style="min-height:1.5em"><li><p style="min-height:1.5em">Own and scale Lago's frontend app — reliability, performance, and feature delivery</p></li><li><p style="min-height:1.5em">Co-design and build features with the Product and Backend Engineering teams</p></li><li><p style="min-height:1.5em">Maintain and enhance our design system to ensure consistency across the app</p></li><li><p style="min-height:1.5em">Improve monitoring and observability for frontend issues and bugs</p></li><li><p style="min-height:1.5em">Work autonomously in a fast-moving environment and lead your topics to completion</p></li></ul><h1><strong>Who You Are</strong></h1><ul style="min-height:1.5em"><li><p style="min-height:1.5em">5+ years of experience in frontend development</p></li><li><p style="min-height:1.5em">Expert-level React skills</p></li><li><p style="min-height:1.5em">Experience managing and scaling design systems in production</p></li><li><p style="min-height:1.5em">Comfortable working autonomously in a fast-paced startup environment</p></li><li><p style="min-height:1.5em">Proactive and ownership-driven — you lead your topics to completion without needing to be chased</p></li><li><p style="min-height:1.5em">A genuine interest in open-source or developer tools is a strong plus</p></li></ul><h1><strong>Who You're Not</strong></h1><ul style="min-height:1.5em"><li><p style="min-height:1.5em">You're not someone who needs a fully scoped spec to start moving — you're comfortable with ambiguity and make progress anyway</p></li><li><p style="min-height:1.5em">You're not siloed — you collaborate actively with Product, Backend, and Design and communicate clearly across teams</p></li><li><p style="min-height:1.5em">You're not satisfied with "it works" — you care about performance, observability, and long-term maintainability</p></li><li><p style="min-height:1.5em">You're not just a feature builder — you take pride in the systems and patterns that make the whole frontend better</p></li></ul><h1><strong>Requirements</strong></h1><ul style="min-height:1.5em"><li><p style="min-height:1.5em">5+ years of professional frontend engineering experience</p></li><li><p style="min-height:1.5em">Strong expertise in React</p></li><li><p style="min-height:1.5em">Experience building and maintaining design systems in production environments</p></li><li><p style="min-height:1.5em">Solid understanding of frontend performance, monitoring, and observability</p></li><li><p style="min-height:1.5em">Strong written and verbal communication skills</p></li><li><p style="min-height:1.5em">A mindset of ownership, curiosity, and continuous improvement</p></li></ul><p style="min-height:1.5em"><strong>Nice to have</strong></p><ul style="min-height:1.5em"><li><p style="min-height:1.5em">Proficiency in GraphQL</p></li><li><p style="min-height:1.5em">Experience contributing to or supporting open-source projects</p></li><li><p style="min-height:1.5em">Familiarity with developer tools or infrastructure products</p></li><li><p style="min-height:1.5em">Exposure to billing, fintech, or data-intensive frontend applications</p><p style="min-height:1.5em"></p></li></ul><h1><strong>Why Join Lago?</strong></h1><ul style="min-height:1.5em"><li><p style="min-height:1.5em"><strong>Work with top-tier talent</strong>: Join a team that values excellence, ambition, and accountability</p></li><li><p style="min-height:1.5em"><strong>Shape the future of fintech</strong>: Be part of a fast-growing company building the best open-source billing platform</p></li><li><p style="min-height:1.5em"><strong>Remote-friendly</strong>: Work from anywhere in Europe</p></li><li><p style="min-height:1.5em"><strong>Competitive package</strong>: Competitive salary and stock options</p></li><li><p style="min-height:1.5em"><strong>Make an impact</strong>: Own the entire frontend of a product used by companies like PayPal, Synthesia, and <a target="_blank" rel="noopener noreferrer nofollow" href="http://Mistral.ai">Mistral.ai</a></p></li></ul><p style="min-height:1.5em">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.</p><p style="min-height:1.5em">Location type: Remote </p><p style="min-height:1.5em">Primary Location: Remote Europe </p><p style="min-height:1.5em">Team: Product Engineering </p><p style="min-height:1.5em">Work Type: Full Time/Permanent Contract </p><p style="min-height:1.5em">Salary: 60,000-90,000 EUR</p><p style="min-height:1.5em"><em>(Applicants must be based in the location specified for this role. Applications from other locations will not be considered.)</em></p>
