Senior Software Engineer (Full Stack)

Join Payabli as a Senior Software Engineer (Full Stack) and take ownership of the interfaces that connect complex financial infrastructure with users. You'll work at the intersection of product, design, and backend engineering to create a fast, secure, and user-friendly UI. Your responsibilities will include building frontend applications, shipping embeddable experiences, collaborating with backend teams, leading code reviews, mentoring other engineers, and optimizing for performance and accessibility. Enjoy benefits such as remote work options, medical insurance, a monthly education fund, stock options, flexible PTO, and paid parental leave.

• Concevoir, développer et maintenir des applications frontend et des bibliothèques de composants réutilisables qui alimentent les plateformes de Payabli et de ses partenaires.
• Collaborer étroitement avec d'autres équipes pour intégrer via des API et des flux de données en temps réel, en garantissant un flux de données transparent à travers la pile et la plateforme globale.
• Diriger les revues de code, défendre les normes frontend et prendre des décisions architecturales qui maintiennent la santé de la base de code à mesure que nous évoluons.
• We’re looking for someone who meets the minimum requirements below. If you meet them, we encourage you to apply – your skills and trajectory matter more than checking every box
• Strong understanding of CSS and responsive design. You can build pixel-perfect, accessible interfaces without leaning on a framework for everything
• Strong communicator. You enjoy walking your partners (design, PM, other engineers, leadership) through technical trade-offs
• State management chops. Experience with Redux, Zustand, or similar frameworks. You have strong opinions on what is the right tool when
• 5+ years of professional frontend engineering experience. You've shipped real products to real users
• React, Typescript and Node.js You don’t just use React, you understand its rendering model, know when to reach for which patterns, and can reason about performance at the component level
• API integration experience. You’ve shipped products that rely upon APIs from multiple services and know to gracefully handle loading states, errors, and edge cases
• Security awareness. Web security principles (XSS, CSRF, CSP, etc.) and build with them in mind from step on
• A degree in Computer Science, or related field (or equivalent experience – we care more about how you operate and what you can build)
• Prior experience in fintech or payments technology. Especially as it relates to good payments UX: checkout flows, merchant onboarding, reconciliation dashboards, or similar financial interfaces
• Experience building embeddable or white-label UI components. Bonus points if you’ve dealt with CSS isolation, versioning and cross-origin challenges