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Frontend Engineer

Lisbon🌐 Remote💼 Full-time🗓 2026-10-02 → 2026-10-03

Core

Build and evolve customer-facing surfaces of a payment orchestration platform, including lightweight embeddable JavaScript SDKs and sophisticated merchant/enterprise web applications.

Role type

Senior Frontend Engineer (Payments/Fintech)

Builds

Embeddable payment SDKs, merchant checkout components, and enterprise payment management dashboards

Domain

Fintech / Global Payments

Required skills

JavaScript, TypeScript, HTML, CSS, DOM, modern frontend frameworks (React), component architecture, frontend performance, data visualization, web security (CORS, CSP, iframes), accessibility (WCAG), automated testing, semantic versioning

Preferred skills

Framework-agnostic SDK development, Backend-for-Frontend patterns (Node.js), payments/fintech domain knowledge (PCI DSS)

Responsibilities

Design and maintain high-performance JavaScript/TypeScript SDKs and payment components; Build responsive web applications for complex workflows and data visualization; Collaborate with Product and Design to shape frontend architecture; Engineer for quality using testing and observability practices; Version and publish client libraries with backwards-compatibility discipline.

Seniority

Senior, hands-on IC

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