Lago - Senior Frontend Engineer
Requirements
• 5+ years of experience in frontend development • Experience managing and scaling design systems in production • Comfortable working autonomously in a fast-paced startup environment • Proactive and ownership-driven — you lead your topics to completion without needing to be chased • A genuine interest in open-source or developer tools is a strong plus • Who You're Not • Who You're Not • You're not someone who needs a fully scoped spec to start moving — you're comfortable with ambiguity and make progress anyway • You're not siloed — you collaborate actively with Product, Backend, and Design and communicate clearly across teams • You're not satisfied with "it works" — you care about performance, observability, and long-term maintainability • You're not just a feature builder — you take pride in the systems and patterns that make the whole frontend better • 5+ years of professional frontend engineering experience • Strong expertise in React • Experience building and maintaining design systems in production environments • Solid understanding of frontend performance, monitoring, and observability • Strong written and verbal communication skills • A mindset of ownership, curiosity, and continuous improvement • Proficiency in GraphQL • Experience contributing to or supporting open-source projects • Familiarity with developer tools or infrastructure products • Exposure to billing, fintech, or data-intensive frontend applications
Responsibilities
• Own and scale Lago's frontend app — reliability, performance, and feature delivery • Co-design and build features with the Product and Backend Engineering teams • Maintain and enhance our design system to ensure consistency across the app • Improve monitoring and observability for frontend issues and bugs • Work autonomously in a fast-moving environment and lead your topics to completion
Benefits
• Work with top-tier talent: Join a team that values excellence, ambition, and accountability • Work with top-tier talent • Shape the future of fintech: Be part of a fast-growing company building the best open-source billing platform • Shape the future of fintech • Remote-friendly: Work from anywhere in Europe • Remote-friendly • Competitive package: Competitive salary and stock options • Make an impact: Own the entire frontend of a product used by companies like PayPal, Synthesia, and Mistral.ai • Make an impact • 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. • Location type: Remote • Primary Location: Remote Europe • Team: Product Engineering • Work Type: Full Time/Permanent Contract • (Applicants must be based in the location specified for this role. Applications from other locations will not be considered.)
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