Senior Frontend Engineer - IL at Appcharge

Worldwide

<p>As a Senior Frontend Engineer on the Payments Platform team, you will play a key role in building scalable, high-performance frontend infrastructure and user experiences that power payment flows for global merchants.</p><p>You’ll work closely with product managers, designers, backend engineers, and customer-facing teams to create reliable, elegant, and developer-friendly solutions used across multiple products and integrations.</p><p>This role combines strong product thinking with engineering excellence — from building reusable UI systems and SDKs to optimizing performance, reliability, and scalability across our platform.</p><p>We’re looking for someone who thrives in a fast-moving remote environment, takes ownership end-to-end, communicates clearly, and can independently drive projects from concept to production.</p><p><br></p><p><strong>Responsibilities</strong></p><ul><li>Design and develop scalable, performant, and maintainable frontend applications using React, TypeScript, and modern web technologies.</li><li>Build reusable UI components, shared libraries, and SDKs that support multiple products and integrations.</li><li>Collaborate closely with Product, Design, Backend, and Customer-facing teams to deliver intuitive and reliable user experiences.</li><li>Own features end-to-end — from technical planning and architecture through implementation, testing, deployment, and monitoring.</li><li>Optimize application performance, responsiveness, and reliability across devices and browsers.</li><li>Ensure high engineering standards through code reviews, testing, documentation, and observability.</li><li>Publish and manage SDK and NPM package versions, including backward compatibility and release management.</li><li>Help improve development workflows, tooling, and engineering best practices across the frontend ecosystem.</li><li>Contribute to building a strong engineering culture focused on quality, ownership, collaboration, and continuous improvement.</li></ul><p><br></p> <br><h3>Requirements</h3> <ul><li>5+ years of experience building modern web applications.</li><li>Strong proficiency in React, TypeScript, JavaScript, HTML, and CSS.</li><li>Experience designing and maintaining reusable frontend architectures, component libraries, or SDKs.</li><li>Experience managing NPM packages, versioning, and release processes.</li><li>Strong understanding of frontend performance optimization and modern browser behavior.</li><li>Experience working with APIs and complex asynchronous flows.</li><li>Familiarity with server-side rendering frameworks such as Next.js — advantage.</li><li>Familiarity with additional frontend frameworks (Angular, Vue, etc.) — advantage.</li><li>Experience building and maintaining frontend integrations with global payment platforms (e.g., Adyen, Stripe, Nuvei), including hosted components, wallets, and alternative payment methods — advantage.</li><li>Experience with cloud environments and CDN infrastructure (AWS preferred).</li><li>Experience working in production-scale environments with high reliability requirements — advantage.</li></ul><p><strong>Soft Skills</strong></p><ul><li>Strong ownership mindset with the ability to independently drive initiatives in a remote environment.</li><li>Ability to balance speed, quality, and pragmatism in a fast-paced startup culture.</li><li>Strong collaboration skills across Engineering, Product, and Design teams.</li><li>Proactive problem-solver with a high attention to detail.</li><li>Comfortable working asynchronously across teams and time zones.</li></ul>